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Which electrodes use inverter when working. Best welding electrodes for manual arc welding

Answers to gardeners

Many novice welders are asked about which electrodes for the inverter it is better to choose. After all, this equipment is most often used by homemade craftsmen. In general, transformer aggregates, which were used to be used for quite a long time. This is due to the fact that the inverter is easy to operate, it is inexpensive, in addition, it can be quite quickly welded with metal parts and structures.

Such equipment is usually used in arc welding by melting. Inverters are distinguished by constant stability and welding current indicators, which ensures heavy-duty connection due to high quality seam. The role of one of the main components of the described welding is metal rods that are necessary for the flow of current to the welding zone. In this case, it should be borne in mind that welding units are represented by different types. Therefore, different electrodes are required for them.

Which electrodes choose

If you also turned out to be among those who walked on the question of which electrodes are better for the inverter, then you should familiarize yourself with the information presented below. Used in the inverter and in general arc welding electrodes of a melting type are made of welding wire, in the process of which state standards of 1970 are used.

According to GOST 2246, electrodes for inverter welding Classified on:

  • alloyed;
  • carbon;
  • high-alloyed.

The first are performed from the wire of the following types:

  • SV-08x3g2cm.
  • SV-08HN2GMT.
  • SV-08HGSMF.

Solving the question of which electrodes are better for inverter welding, you should be closer to familiarize yourself with sogleodistic rods, which are performed from the Wire of SV-08 and SV-08AA and others. The basis of high-alloyed electrodes is the wire of SV-30X25N16G7 and SV-01H23N28M3D3T. However, none of these lists can be called complete. The rod is covered with a method of presses. It protects the welding bath from atmospheric influences and allows the arc to turn more steadily.

Newcomers should be aware that the electrodes can be classified into two subgroups. The first provides for products intended to perform seam when connecting responsible metal structures. The second subgroup is intended for work with conventional connections.

For responsible products, the Woni electrodes or Ano is best preferred. If you are facing what electrodes are better for the inverter, you should also pay attention to the products with MR-3 marking, which are intended for conventional welded joints. Woni electrodes brand is quite capricious. This is due to the fact that with such rods work does not work out for every novice master. If you do not have experience in such events, it is better to refuse from such electrodes.

Popular types of electrodes

If you cannot decide on the choice, you should pay attention to the most popular brands, they look like this:

  • Woni-13/55.
  • MP-3C; MP-3.

The first are popular among experienced masters. These rods allow you to achieve high-quality seam, which is true at low outer air temperatures. At the same time, density indicators remain optimal.

Solving the question of which electrodes are better for the inverter, it is worth paying special attention to the Rods of MR-3C, which are used if necessary to perform a seam with high quality requirements. These electrodes are used to connect the elements of constant and alternating current of reverse polarity.

The most versatile brand is MP-3, with its help you can connect metal blanks with a contaminated surface, rust and wet structures. The most purchased among Russians are ANO. They do not require a preliminary calcination, and they can be ignited without much effort. In the end, you are guaranteed to get an excellent result, even when welding is performed in an inexperienced master.

Choosing electrodes for different materials

Before starting work, it is necessary to remember that products from different materials Require certain electrodes. If you are planning to work with high-alloy or stainless steel, it is best to use the Rods of the CL-11, which are manufactured according to the state standards 9466-75. But if you plan to weld the workpiece from carbon steels, the electrodes of the OZSC-4 are best suited.

If you still solve the question of which welding electrodes are better for the inverter to choose, then you should pay attention to the ANO-6. They are intended for products from small carbon steels. In this case, we are talking about rods with an ilmenite coating.

Alo-4 is also welded, which have a rutile coating. Different cast iron stamps can be combined with ORC-2. By purchasing electrodes, you must ask if they have epidemiological certificates that guarantee high-quality welding. The use of material made according to state standards, also talks about the safety of work.

For reference

The inverter is modern equipment with which you can weld different surfaces With the help of almost everyone existing species electrodes. This is the popularity of the device. However, choosing the best welding electrodes, you must remember that not all rods provide a quality result and an excellent transport seam.

In addition, security issues when using rods that are not recommended for this type of welding will be "chrome". This suggests that when choosing rods, it is necessary to be guided by the recommendations of specialists.

Selection of electrodes for Renthana apparatus

Regardless of which brand of the device will be used for welding, the electrodes are selected by the scheme described above. If you faced the question of which electrodes are better for the inverter "Resanta 190" to choose, then you must be guided by the settings for the strength of the current and the diameter of the rods. The last parameter is selected depending on the thickness of the workpiece. If it is 1.5 mm and less, it is better to apply argon-turn or semi-automatic welding.

What electrodes are better for the inverter "Resanta", interests many. Responding to this question, it can be argued that the diameter of the electrode is selected, as mentioned above, the thickness of steel. If it is 2 mm, the diameter of the rod may vary in the range from 2 to 2.5 mm. With a thickness of steel 12 mm, the electrode is best preferred, the diameter of which is 5 mm.

When choosing the best electrodes for welding, you may encounter the need to purchase a rod for a 13-mm blank. In this case, the diameter of the electrode will be 5 mm. It is such a parameter that will be relevant for harvesting more impressive thickness. But as for the current, it is exhibited depending on the diameter of the electrode. Thus, due to the calculation of 1 mm diameter, it is necessary to set 30 A. for a 3-millimeter rod of the current may result in the limit of 80-110 A. The final value will depend on the spatial position, the number of passes and thickness of the metal.

Finally

If you have already decided for yourself which electrodes are better for the inverter "Resanta 220PN", given the above recommendations, they must remember that there are no identical and accurate settings today. The master method of errors and samples exhibits the current parameters on their own. At high currents, you must be prepared for the fact that the welding bath is obtained less controlled and more liquid.

For welding. Different species - Dozens and hundreds. Each brand is developed under its tasks. The value has everything: the material of the rod, its diameter, coating, welding current. Let's understand, under what conditions what electrodes are better.

What electrodes to cook inverter

At the output, the inverter issues a constant welding current. Therefore, there are either electrodes for DC or universal electrodes for welding. Further selection depends on the type and thickness of the metal. For example, for household problems there are enough electrodes 2-4 mm.

What electrodes cook stainless steel

Stainless steel cooking harder than any ferrous metals. It is worse conducting heat and is susceptible to boiling in a welding bath. When overheated, the alloying elements fuse, and fragility increases several times. The perfect option, especially for thin-walled steel - welding with a tungsten electrode in a protective environment (argon). This gives less vaccination.

With arc welding use:

  • for food (ordinary) stainless steel - OZL-8, CL-11;
  • for corrosion-resistant steels - NJ-13, CT-15, EA-400 / 10U;
  • for heat-resistant steels - OZL-6, KTI-7A, CT-28;
  • for heterogeneous steels - EA-395/9, ANZhR-1, OBL-312.

What electrodes can cook aluminum

Aluminum and its alloys are difficult to cook enough. Usually apply one of 2 methods:

  • TIG welding - requires non-compatible tungsten electrodes.
  • MMA welding (manual arc) - using coated electrodes, such as Zazane or Oz.

Also resort to semi-automatic welding (MIG), but then instead of electrodes, a welding wire is used.

What electrodes can cook cast iron

Cast iron is one of the most difficult for welding materials. It is not plastic, when heated in the place of the seam, cracks often occur. Therefore, special electrodes are used:

  • CEC-4 - consist of iron with the main coating. Suitable for high strength and gray cast iron. You can cook only in the lower position, on the reverse polarity current.
  • MNCh-2 - applied to surfacing parts, welding of injection molded defects. Suitable for three types of cast iron: high strength, forged and gray. Gives a dense and clean compound. Cook not only in the bottom, but also in a vertical position.
  • ORC-4 - equipped with a rutile coating. Provide a clean surface of the seam. You can cook in any positions, with the exception of the vertical (from top to bottom).
  • OZHN - consist of iron with the addition of nickel. Used for parts made of high-strength cast iron. Cook on a constant current, making vertical or lower seams.

Maintaining and welding technology. The cold welding method is often used. Seams are made short (25-35 mm) so that the material does not heat. The second method is exactly the opposite to the first: the joints of the blanks are heated to avoid the temperature drop.

What electrodes cook pipes, channel and thin metal


  • Welding pipes is complex in that it is necessary to boil in different positions. You need to adjust the slope of the electrode and the welding speed. The electrode is selected in diameter depending on the thickness of the walls of the pipe itself. Next, you need to take into account the pipe material. For steel, the electrodes are OK 53.70 and OK 74.70 (ESAB). Thanks to a solid seam, they are suitable for high pressure pipes. To connect copper pipes, or tungsten (uncomplicated), or melting electrodes, such as UTP 39 (Bohler), are used.
  • Welding of the channel (steel rolled) requires a seam of increased strength. The fact is that the channel is used as a carrier or reinforcing element of responsible structures. The wall thickness of the sewer can reach 7-13 millimeters. For such massive beams, Woni 13 / 55u electrodes will be suitable. Welding is possible in any spatial positions. Well, for more subtle channels, we recommend universal electrodes Ano-21 with a diameter of up to 5 mm.
  • The welding of the thin metal (up to 2 mm) requires accuracy, in order not to burn the metal through. First, a small diameter electrode is needed (from 0.5 to 2.5 mm depending on the thickness of the sheet). Secondly, the electrode with a special coating is to slowly melting and stably burned. Ohma-2, MT and MT-2 can be called among the appropriate stamps. For the most difficult cases - welding semi-automatic with the use of welding wire.

What electrodes what current to cook

All electrodes are divided into two types: for alternating current and for permanent. Welding on a "change" is a simpler way, while the "post" is considered more reliable. The distribution of the series looks like this:

  • For alternating current - Aho, MP, OGSC, ESAB OK (also can operate on direct current);
  • For DC - Woni, Ozane, Tsl, OZL, EA, ANTS / OZM, etc.

What electrodes to choose for beginners

The initial experience of electric welding is better to purchase on the welding electrodes of the Ano brand (for example, ANO-21). These are universal rutile coating electrodes. Convenient because allowing welding in all spatial positions. Easily ignite. The metal splashes less, slag easily departs. Another plus - you can cook wet, poorly purified and even rusty surfaces.

According to the same criteria, the electrodes of OZSC-12 or MR-3 can be advised. Recommended diameter - 3-4 millimeters. Having mastered the work with these electrodes, you can go to approx 53.70, Woni, LB52U, KESSEL and Bohler (the last two - production of Austria and Germany).

Detailed instructions For the choice of electrodes, see this video:


Not all novice welders know that the welding electrodes are more than 200 species, of which about a hundred species are used in manual welding. You do not need to know everything, but you need to get information about some of the most popular and frequently used information. Therefore, we turn to the selection of electrodes for manual arc welding.

The electrode is a wire, which is overlooked with a special composition called the coating. In the process of welding wire (core) melts under the action electric current High power filling the space between welded metal products. It also melts the unhealthy, which in the combustion process allocates gas. The latter envelops the welding zone, not giving oxygen to penetrate inside.

The second purpose of the coating is the protection of the welded layer itself. In the process of melting, a part of the coating material becomes liquid and covers the welding seam. This thin film protects it from the negative effects of oxygen. Why this protection is necessary.

  • In the process of melting metal oxygen will take part of the energy on itself, so electric current may not be enough for welding itself.
  • In case of contact with oxygen with a small humidity on metals, oxide appears, which reduces its qualitative characteristics.

Types of coating

Currently, four types of coating are applied.

  1. Main with labeling "b".
  2. Source - "A".
  3. Cellulosic - "C".
  4. Rutile - "P".

There are mixed species, for example, ar - sour-rutile, RB - rutilo-basic, Rzh - rutile mixed with iron powder and RC - rutile-cellulose.

Most often for manual welding, the inverter uses welding electrodes with the main or. The first category includes the electrodes of the Woni brand. They are usually used in cases where you need to get high quality welding seams. That is, the seam must meet high strength, shock viscosity and high plasticity. At the same time, the seams of the Woni weld electrode ensure that crystalline cracks will not be formed inside the weld, plus the electrodes of this type are not susceptible to aging. Therefore, experts recommend to apply them to welding responsible structures that will be operated in harsh environments.

Woni has their own negative sides. Moisture on electrodes, rust on the end of wire, oil or fat stains On the coating, rust on the connected metal products - all this is a guarantee of the appearance inside the welding seam of sinks that reduce its quality. In addition, it is possible to work with these electrodes only on a constant current with reverse polarity.

Rutile coating welding materials are used mainly to connect details from low carbon steel. Their bright representative is MRM. Here are the positive characteristics of this category.

  • Can work both on constant and alternating current.
  • Metal splashing minimal.
  • With the help of electrodes of this type, high-quality welding seams made in any position of blanks can be obtained.
  • Slag after welding easily leaves.
  • With the help of MP, you can cook and rust products, and even severely contaminated.
  • Light ignition even with a low volt-ampere characteristic of the inverter.

When the question is about the newcomer, how to choose the electrode to select the electrode for welding, the option is optimal for it - this is a MRM brand.

Rutile coatings include the stamps of ANO. They are used to combine carbon steel products, for example, for. All other characteristics are exactly the same as MR.

Why do experienced welders do not like to use electrodes with rutile coating? First, they are called Bengal lights. Secondly, it is soft and fast welding, and for good warm-up warm-up, slow welding is needed. Therefore, professionals are negative about them, and for beginners - this is just right.

Other selection options

A few more parameters that determine the choice of electrodes for welding. One of the most important indicators is, and accordingly, the birth of the current.

If an inverter is used for welding, then it is necessary to understand that it gives a constant current. Therefore, the connection of the welding electrode can be made in two schemes.

  1. Polarity straight. The scheme is as follows: minus connects to the welding electrode, plus to the mass.
  2. Polarity reverse. On the contrary: minus to mass, plus to the holder.

What is the feature of each connection scheme. It all depends on the strength of the coach of metals. With direct polarity, metal welded products are highly heated. With reverse polarity, the heating temperature is not so high. Therefore, when you need to cook two metal sheets of a small thickness, it is better to use the reverse polarity, which will protect against the burden. In addition, reverse polarity is used when products from high-alloy steels are welded. They are sensitive to high temperatures.

There are three more indicators for which you need to pay attention.

The thickness of the welding product

The diameter of the electrode must be associated with the thickness of the welded parts. That is, these two parameters are interconnected. Here are some ratios.

Select the electrode in diameter is important. The thing is that the more this indicator, the worse the density of the seam, when taking into account relations in the table. In addition, the wrong selection leads to the instability of the welding arc, deterioration of the province, increasing the width of the seam itself.

Another dependence of the diameter of the welding electrode. In this case, the current force.

It turns out that three parameters: the strength of the current, the thickness of the welded metals and the diameters of the electrodes are interconnected. Therefore, answering the question of which electrodes to choose, it is necessary to take into account this relationship. True, we note that the current of the current in each category may differ slightly from those presented in the table. The MR electrodes with a diameter of 2 mM can be cooked and at a current in 40 A. Woni at 30 A. Therefore, be sure to select the electrodes, read their characteristics that are specified by the manufacturer on the packaging of the welding material.

Types of welded metals

Select welding materials under required metals It is not always easy, because only steel can be defined on the eye, or colormet. It is clear that in addition to steel structures where the electrodes described above are used, special welding products are used in all other cases: for cast iron, for stainless steel, and so on.

As for steel products, there are certain difficulties that depend on the definition of the type of steel. But if you understand with this, then the question is how to choose the electrodes correctly, it will be easier to respond.

  • For welding steels of a boiling type, you can use any brands with any coating. Such steels include: low carbon and weakly nervous.
  • For welding semide steels, it is better to use electrodes with rutile or main coating.
  • For welding constructs from calm steel, which are subjected to high dynamic loads, and which are operated at sufficiently low minus temperatures, it is better to use brands with the main coating.

The quality of the seam will affect the stability of the burning of the arc. Therefore, the electrode selected by you must correspond to the type of current used. For welding materials with the main coating, only permanent current is required, and permanent, variable can be used for other types. In electrodes with rutile, cellulose and acidic coating, which work from welding transformers, that is, on alternating current, the arc burns stable. So, the seam is obtained quality.

As for the direction of welding, the electrodes with cellulose coating are well boiled in the lower position. Because these electrodes are quite viscous slag and plus the metal wire is transferred to seam with small drops, which allows you to evenly fill the joint between metal parts. In this regard, the wedding seam has the welding seam in the electrodes with the main coating.

When there is a question of welding thick-walled products, the technology determines the multi-layer of the applied seam. Therefore, such a parameter, as a good separation of slag, becomes the main one when choosing electrodes. In this regard, the electrodes with the main coating again lose. Here we add that the welding products of this type require a certain purity of the welded metals.

Conclusion on the topic

Choose welding material in all parameters is not easy. There will have to take into account many nuances, so it is recommended to take on weapons of tables located above, as well as information that means the purpose of the electrodes themselves.

The compound of various metal products is most often performed using welding. For this, special equipment is used to include both transformer and inverter units. But even the easiest of them cannot work without electrodes. After all, in order to obtain a high-quality seam made, it is necessary to melt the steel rod. But for each material, the electrodes for the inverter must be made of a specific alloy. Only in then you can achieve a good result.

Inverters and components for them

Modern welding units are very different from their predecessors. They have compact dimensions, low weight, easy to operate and transport. But in order for the seam made with their use, it is necessary to use correctly selected electrodes. From this 90% depends the success of the welding.

Design features and specifications

What is the element that is so necessary when performing welding? This is a segment of steel wire having a coating. It is necessary to maintain stable burning of the arc, and also provides:

  • Metal protection;
  • Alloy seam.

However, the functional features of the element depends on its purpose.

We look at the video, types and their main appointments, as well as the selection criteria:

Basic technical characteristics Welding electrodes for the inverter are:

  1. Diameter and length of the rod;
  2. Material or alloy from which it is made.

The length of the product can be from 300 to 450 mm and depends on the nature of the doping of the electrode. As for the diameter, there is a whole line of rods, where the thinnest rod has a size of 1.6 mm, and the finest reaches 5 mm. But electrodes for welding with a diameter of 1.6 mm are usually made by order, as they do not find widespread from the domestic market.

Types of electrodes

As for the classification of these elements, they are divided into two main types:

  1. Melting;
  2. Unqualced.

The first can be performed both from steel wire and special alloys depending on what materials will be applied for welding. Usually for working using a welding inverter with cast iron, copper, heterogeneous steel is used electrodes made of alloys.

Uncomplicated or tungsten products are used in argon welding. They can also have differences in characteristics depending on the application.

Table of varieties of electrodes

In addition, the electrodes are divided into destination to the following types:

  • For different steels;
  • In stainless steel;
  • Aluminum;
  • Nickel;
  • For repair;
  • For hardly welded alloys.

There are differences and in the type of coatings. The market presents electrodes with four varieties, and the most common are: the main and rutile.

Criterias of choice

Since this consumable material is necessary for any kind of welding, it should be purchased with the features of the equipment and the specifics of the work performed.

We watch video, types and their differences:

At the same time, such characteristics should be taken into account as:

  1. Diameter;
  2. The composition of the material.

For high-quality execution of the seam, you must correctly select consumables. And first of all, their parameters and including diameter are taken into account. And yet what electrodes are better for the inverter? For different stamps, it is listed in regulatory documents. But it should be borne in mind that the nominal diameter corresponds to the size of the inner rod and does not include the coating.

The thickness of this layer is individual for a certain type of product and marked with lites:

M - denotes a small diameter and a small layer of coating up to 1.2 mm, and d - over 1.8 mm. Such marking is adhere to both domestic and foreign companies. However, diameters they will be different.

We watch the video, how to choose the right electrode to select the desired welding:

But not only the sizes are important when choosing electrodes. The composition of the components in it plays a big role. Since the electrode consists of a rod and coating, then the material from which they are made are taken into account. For most products, low carbon wire is taken as the basis, and the coating composition includes various components:

  • Fluorine compounds;
  • Titanium dioxide;
  • Rutile.

The use of the electrodes of the first type allows to achieve a solid and heat-resistant compound, differently plasticity. Products with titanium dioxide create a stable arc and allow you to achieve high compound strength. Rutile electrodes are used when welding structures with high humidity. In addition, when choosing the electrodes, the characteristics of the welded metal should be taken into account.

For example, Woni or MR rods are used for carbon steels. The first have a small level of splashing, the second - differ in the rapid separation of the slag. They can be applied both in professional and portable equipment.

Manufacturers whose products are better

Since there are a large number of different brands and types of such products, consider only those that are intended for manual welding. Moreover, we only choose the samples used when working with carbon and low-alloyed steel.

We look at the video, test of various welding electrodes:

We will be based on reviews left by users, as well as publications from specialized journals. According to these sources, the best electrodes for the inverter in the domestic market are products of the following factories:

  • Petersburg Esab-Sobal;
  • Tyumen;
  • Kamensk-Shakhtinsky;
  • Orlovsky;
  • Losinoostrovsky.

Among foreign manufacturers, products of companies are in the greatest demand:

  • Kobelco;
  • ECAB

These electrodes for inverter welding in many respects are superior to domestic products, although they have a fairly high price.

We look at the video about the products of Monolith:

As for Russian products, they are losing in most options, although there are already some samples that rise to the level of the most bad imported electrodes. But then only joint ventures belonging to European or Asian manufacturers were able to achieve such results.

We now turn to the consideration of the products itself. So the electrodes of the St. Petersburg plant cost about 135 rubles per 1 kg and, according to the welders, are the best among domestic models.

At the electrodes for inverter welding of the Tyumen company, the price is somewhat higher, although in quality they practically do not differ from the previous sample.

The products of the Kamensk-Shakhtinsky plant are mainly designed for use with household inverters and has a price of about 130 rubles. For 1 kg.

Penza electrodes are considered the best price and quality ratio. Their cost does not exceed 58 rubles.

Products of the Japanese company although it is expensive, but allows you to achieve excellent results when checking for strength. Specialists argue that these electrodes fully justify such a high price.

The welding process cannot be called simple, so before you begin the assembly of a certain design with its application it is necessary to pre-eat if you have never been involved in this.

To do this, the clip is attached to the part, and the electrode is refilled in the holder. Then the current is set, according to the diameter of the steel rod. At the same time, learning should be on new electrodes - it will help better understand the meaning of work.

We watch video, basic welding skills:

Creating an arc is performed as follows. The electrode is installed at an angle of about 70 ° to the part. Then they quickly hold them along the workpiece, while the sparks and characteristic sound should appear.

The preparation of the weld metal, equal fundamental, is provided by choosing the type of welding electrode, which regulates the strength characteristics of the welded joint. It should be borne in mind that the use of electrodes with elevated mechanical properties of the weld metal, for example, on the limit of tensile strength, can lead to a decrease in the working capacity of the welded structure.

For boiling steel welding (low carbon steel, produced from the filamental furnace) use electrodes with any coating.

For welding of semi-deval steels (steel obtained during the deoxidation of liquid metal is less fully, than when weaving calm steel, but more than when smelting boiling steel), electrodes with coatings of basic or rutile species should be used.

Welding of constructs from calm steel, operating at low temperatures or at dynamic loads, should be performed by the electrodes with the main coating.

The burning stability of the arc affects the quality of the seams and the possibility of welding with alternating current. The most stable arc is burning in electrodes with cellulose, sour and rutile coatings. This allows the use of welding transformers. For the main coated electrodes, only DC sources are required.

In the lower, vertical and ceiling positions, the seam is better formed in the electrodes with a cellulose coating, since the fine-cycle transfer of the electrode metal and the high viscosity of the slag provide high-quality welding. Worse is the seam at the electrodes with the main coating.

When welding thick-walled structures with multi-layer seams, the separation of slag is an essential indicator. Electrodes with rutile, cellulose and acidic coatings provide better separation of slag compared to the main coating.

Welding with the main coated electrodes requires careful cleaning of edges from rust, oil, dirt to avoid pore formation. In addition, electrodes with the main coating are prone to pore formation at the initial moment of welding and with a long arc welding.

Characteristics of electrodes for welding carbon and low alloy steels

Type E42.
412 MPa (42 kgf / mm 2)
Mark.,
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
Ogonek
For products made of steel 1-3 mm thick. Welding can be performed by the "top-down" method.
ANO-6.
Short or medium arc welding. Allowed by unleasiated edges. When welding the angular seams, the electrode tilted at an angle of 40-50 ° in the direction of welding. It has high resistance to the formation of pores and hot cracks. Uhh≥50V.
Ano-6m
Short or medium arc welding. Slag is easily separated. Minimum splashing. Small tendency to form pores and hot cracks. Uhh≥50V.
ANO-17.
High performance. For welding metal large thickness with long seams. Small sensitivity to pore formation when welding through an oxidized surface. Uhh≥50V.
WTS-4.
Welding pipelines without fluid oscillations with support on the edges "top-down". SWA root - on a constant current of any polarity, "hot" passage - on reverse polarity. Leave a glass of at least 50 mm.
HTS-4M
Welding root seam and "hot" passage of jacks of pipelines. Allow you to keep welding with the "top-down" with the support of the electrode. Provide resistance to the formation of pores.
OZSC-23.
For welding structures of small thickness over the oxidized surface. Small sensitivity to pore formation. Low toxicity. Uhh≥50V.
Ohma-2.
For welding of responsible metal structures of a small thickness (0.8 - 3.0 mm). Welding an elongated arc along an oxidized surface. Electrodes with low fluid ability. Uhh≥60V.
Type E42A. Steel with tensile strength
412 MPa (42 kgf / mm 2) with high seam requirements for plasticity and shock viscosity.
Woni-13/45
For welding of responsible structures operating under reduced temperatures. Short arc welding on carefully stripped edges.
Woni-13 / 45A
For welding of responsible structures from Steel type SHL-4, MS-1, ST3SP and them like. Short arc welding on carefully stripped edges.
UONY-13/45
UONY-13 / 45A
For welding of responsible structures operating under reduced temperatures. Welding extremely short arc on carefully stripped edges.
UONY-13 / 45R
For welding shipbuilding steels. Welding short arc on stripped edges. High resistance of metal metal to the formation of hot cracks.
Type E46. For steels with the tensile strength
451 MPa (46 kgf / mm 2)
ANO-4.
For welding simple and responsible structures of all groups and dealers of deoxidation. Welding arc medium length. Allowed by unleasiated edges. Not prone to pore formation with an increased current. Uhh≥50V.
ANO-13.
For vertical angular, threaded and butt seams, the way "top-down". Short or medium arc welding. It is possible by unleashed edges. Metal seam racks to the formation of hot cracks. Gigroscopic coating. Uhh≥50V.
ANO-21.
For simple and responsible structures from carbon steels of all groups and decks of deoxidation. Welding an elongated arc over unleasiated edges. Uhh≥50V.
ANO-24.
For welding in the installation conditions. Welding an elongated arc over unleasiated edges. Small tendency to form subs. Uhh≥50V.
ANO-34.
In the lower position, the electrode is deflected by 20-40 ° from the vertical in the direction of welding. Welding is possible an elongated arc along the oxidized surface. Uhh≥50V.
ELZ-S-1
For welding of low-carbon, carbon and low-alloyed steels with a tensile strength of up to 490 MPa. Uhh≥50V.
MR-3.
For responsible structures. Short or medium arc welding. Surfaces thoroughly cleanse. The gaps are well overlapped. When welding at elevated currents, pores are possible. Uhh≥60V.
MP-3M.
For steels with carbon content up to 0.25%. Possible welding of a wet, rusty, poorly purified from metal oxides. High-performance. Welding of medium and large thicknesses is carried out at the increased modes "angle back". Uhh≥60V.
OZSC-3.
For welding responsible parts. Short arc welding. Welding is allowed on unnecessary surfaces. Uhh≥60V.
OZSC-4.
For high-performance welding of responsible parts. Welding an elongated arc and an unnecessary surfaces. Uhh≥60V.
OZS-4I
For responsible structures. Allow welding of wet, rusty, poorly purified from metal oxides. High performance. Welding in the lower position with medium and large thicknesses "angle back". The average length of the arc. Uhh≥60V.
OZS-6.
For high-performance welding. Welding with an extended arc is allowed, it is possible in an oxidized surface. Uhh≥50V.
OZS-12
Recommended for brand compounds to obtain petoch-haired concave seams. Slag is easily separated. Welding an elongated arc and over an oxidized surface. Uhh≥50V.
Type E46A. For steels with a tensile strength of 451 MPa (46 kgf / mm 2) with increased seam requirements on plasticity and shock viscosity.
TMA-46.
For responsible structures, including pipelines. Welding short arc on stripped edges. Uhh≥65V.
Woni-13 / 55K
For responsible structures operating under negative temperatures and alternate loads. Welding short arc on stripped edges. Metal seam has high resistance to the formation of hot cracks and is characterized by low hydrogen content.
ANO-8.
For welding structures from carbon and low-alloy steel, working under reduced temperatures. Short arc welding on carefully stripped edges.
Type e50 For steels with a tensile strength of 490 MPa (50 kgf / mm 2)
WTS-4A.
High-performance welding of the root seam and the "hot" passage of the joints of pipelines and responsible structures. Welding root seam without oscillations, support, on a constant current of any polarity. "Hot" passage - after stripping the root seam. Both layers of welding "top-down". Leave a glass of at least 50 mm.
55-U.
Short arc welding or based on carefully stripped edges. Uhh≥65V.
Type E50A. For steels with a strength limit for stretching 490 MPa (50 kgf / mm 2) with elevated seam requirements on plasticity and shock viscosity.
ANO-27.
For welding of responsible structures at temperatures up to -40 ° C. A short arc welding on a carefully stripped surface. Provide a reduced hydrogen content in the seams.
ANO-T.
For welding of responsible structures and pipelines in all climatic zones. Welding root seam without lining rings. Formation of reverse roller in the ceiling position.
ANO-TM / N
For rotary joints of oil and gas pipelines with a diameter of 59-1420 mm and other responsible structures. Welding short arc on stripped edges. Effective for one-sided welding. Uhh≥65V.
Ano-TM.
For responsible structures, including pipelines from low carbon and low alloy steels. Welding short arc on stripped edges. The inverse roller 0.5-3 mm high is qualitatively formed.
ITS-4.
For shiporpus steels St3p, 09G2, 09G2C, 10HSD, 10G2S1D-35, 10G2C1D-40, etc. Short arc welding on carefully stripped edges. Provide high corrosion resistance.
ITS-4S.
For welding of responsible structures in shipbuilding; Steel SHL-4, 09G2, etc. Welding with a short arc on stripped edges. Uhh≥65V.
OZS-18.
For welding of responsible structures from steels 10xtest, 10HNPP, etc. thickness up to 15 mm, resistant against atmospheric corrosion, low hydrogen content.
OZS-25.
For welding of responsible structures. Short arc welding on carefully stripped edges. Good slag separation. Lack of cutting and petty seam.
OZS / VNIist-26
For pipelines of oil and gas contaminated with hydrogen sulfide. Short arc welding on carefully stripped edges. High corrosion resistance in the medium of a moistened to 25% hydrogen sulfide.
OZS-28.
For responsible structures from Steel 09G2, 10XD, etc. Welding of a short arc on carefully stripped edges. Uhh≥60V.
OZS-33.
For specially responsible structures. Provide metal seam with high resistance to the formation of hot cracks and low hydrogen content. Welding short or extremely short arc on stripped edges.
TMU-21U.
For steel type 15GS et al.; For power equipment. For pipes with a wall thickness more than 16 mm. Welding into a narrow cutting with a total corner of the edge of the edges to 15 °. Short arc welding on carefully stripped edges. Easy ignition arc without "starting" porosity.
TMA-50.
For responsible structures and pipelines. Welding short arc on stripped edges. Uhh≥65V.
Woni-13/55
For responsible structures operating under negative temperatures and alternate loads. Short arc welding on carefully stripped edges. Metal seam racks against the formation of hot cracks, has a low hydrogen content.
Woni-13 / 55c
For specially responsible structures. Provide metal seam with high resistance to the formation of hot cracks. Low hydrogen content. Welding only with a short arc on stripped edges.
Woni-13/5555
For highly responsible structures operating under reduced temperatures. The metal seam is well opposed to the formation of hot cracks. Low hydrogen content. Welding only with a short arc on stripped edges.
UONY-13 / 55R
For shipbuilding steels with a strength of up to 490-660 MPa. Short arc welding or based on carefully stripped edges.
TSU-5.
For pipe parts and heat exchangers of boilers operating at temperatures up to 400 ° C. Reduced tendency to pore formation. Short arc welding on carefully stripped edges.
Tsu-7.
For responsible structures operating at temperatures up to 400 ° C. Short arc welding on carefully stripped edges.
TSU-8.
For responsible structures operating at temperatures up to 400 ° C with a low metal thickness and for welding pipes of small diameters. Short arc welding on carefully stripped edges.
E-138 / 50N
For the heavily loaded seams of the underwater part of the courts. For steels ST3C, ST4C, 09G2, SHL-1, SHL-45, MS-1, etc., the welding of a short arc according to carefully stripped edges. Metal seam racks against corrosion in sea water.
Type E55 For steels with a tensile strength of up to 539 MPa (55 kgf / mm 2)
OZS / VNIist-27
For pipelines and structures from cold-resistant low-alloy steels working at temperatures up to -60 ° C. Short arc welding on carefully stripped edges. Root seams - on a constant current of direct polarity.
Woni-13 / 55u
For welding fittings and rails with a bathroom, for responsible structures with manual arc welding. Welding short arc on stripped edges. For bathroom fashion Current values \u200b\u200bincrease 1.3-1.7 times. Breaks during welding are unacceptable. Uhh≥65V.
Type E60. For steels with the tensile strength of up to 588 MPa (60 kgf / mm 2)
Ano-TM60
For butt connections of pipes and other responsible structures. Welding short arc on stripped edges. Formation of root seam without lining elements and fittings with a smooth transition to the main metal.
WF-65
For responsible structures, including trunk pipelines. Short arc welding on carefully stripped edges.
OZS-24M.
For structures and pipelines from Steel 06g2NAB, 12G2AFU, 10GNMA, etc., working at temperatures up to -70 ° C. Welding short arc on stripped edges. Metal seam is characterized by high cold resistance.
Woni-13/65
For responsible structures from carbonistic low-alloy chromium, chromolibdden, chromocremarganese steels working at low temperatures. Short arc welding on carefully stripped edges. High resistance weld metal to hot cracks. Low hydrogen content.

Characteristics of electrodes for welding of alloyed steel steels

Type E70. For steels with the tensile strength
686 MPa (70 kgf / mm 2)
Mark.,
Scope I. technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
ANO-TM70
For welding of responsible structures and pipelines without lining elements and fittings. Welding short arc on stripped edges. Uhh≥65V.
ANP-1
For welding of responsible structures from Steel 14HG2MR, 14 chmndraft, etc., parts of transport and road vehicles operating at low temperatures. Short arc welding on carefully stripped edges.
ANP-2.
For welding of responsible structures. Short arc welding on carefully stripped edges.
VF-75
For pipelines and responsible structures when welding filling and facing layers. Short arc welding on carefully stripped edges.
Type E85 For steels with a tensile strength of up to 833 MPa (85 kgf / mm 2)
NIAT-3M.
For welding of responsible structures from thermally hardified steels. Short arc welding on carefully stripped edges.
Woni-13/85
For responsible structures made of thermally hardified steels to a high strength: 30HGS, 30HGSN, etc. Welding only with a short arc on carefully stripped edges. Metal seam racks to hot cracks. Low hydrogen content.
Woni-13 / 85u
For reinforcement and rails with the way and manual arc welding of structures from high-strength steels working with heavy loads. Welding short arc on stripped edges. With a bath, use the remaining or removed forms.
Type E100. For steels with the tensile strength of up to 980 MPa (100 kgf / mm 2)
En-hn7
Assembly without gaps. Welding short and medium arc on carefully stripped edges.
VI-10-6.
Assembly without gaps. The welding of a short or medium arc according to the carefully stripped edges with loop-shaped movements of the electrode. With rapid cooling, cracks are possible in crater.
OZS-1
Short arc welding continuously, not allowing cooling, on carefully stripped edges. Preheating up to 400-450 ° C. You can use to surfacing stamps.

Characteristics of electrodes for welding alloyed steels of high strength

Type E125 For steels with the limit of tensile strength over
980 MPa (100 kgf / mm 2)
Mark.,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
NII-3M
For steels of 30 schoolsna, 30khsn2a, etc., thermally processed to strength up to 1274 MPa (130 kgf / mm 2). Welding short arc on stripped edges.
Type E150 For steels with a strength of tensile strength up to 1470 MPa (150 kgf / mm 2)
NIAT-3.
For high-strength steels of type 30HSNA with a strength limit up to 1470 MPa (150 kgf / mm 2)

Electrodes for surfacing

Slip electrodes provide the reducing metal of a variety of chemical composition, structure and properties. According to GOST 10051-75 "Metal-coated electrodes for manual arc surfacing of surface layers with special properties" There are 44 types of such electrodes.

All of them have the main coating. This provides better resistance to the formation of cracks when surfacing parts made of steel with an increased carbon content and with a high rigidity of the structure.

Depending on the working conditions of structures with deposited coatings, the electrodes for the surfacing can be divided into 6 groups.

Characteristics of electrodes for surfacing

First group Electrodes for surfacing that provide low-carbon low-alloyed weld metal with high resistance under metal friction conditions about metal and shock loads (on purpose to this group include some of the 3rd group electrodes).
Electrode Brand / Metal Type,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
OZO-300M / 11G3C
For parts from carbon and low-alloy steels working under friction and shock loads, for example: shafts, axes, autospots, crossmen, etc. Details of automotive and railway transport.
OZHO-400M / 15G4C
The same, with an enlarged hardness of the weld metal.
HP-70 / E-30G2XM
For parts operating under intensive shock loads and friction for metal: rails, crossmen and more.
Tsniein-4 / E-65x25g13n3
For welding defects casting railroad crossings and other parts from high-headed steels 110g13l.
Second group Electrodes that ensure the production of a medium carbon low-alloyed weld metal with high resistance under the friction conditions of metal about metal and shock loads at normal and high temperatures (up to 600-650 ° C).
EN-60M / E-70X3SMT
For stamps of all types that work with heating contact surfaces up to 400 ° C, and wireless parts in machinery: gears, eccentrics, guides, etc.
CN-14.
For equipment of hot stamping and cutting, including knives, scissors, stamps, etc.
13kN / LivT / E-80x4c
For teeth of buckets of excavators, barking, dredgers, knives of road vehicles working with abrasive wear without significant blows and pressures.
OZS-3 / E-37X9S2
For edged and cutting stamps of cold and hot stamping (up to 650 ° C) and high-speed parts of machinery and equipment.
Oozi-3 / E-90x4m4VF
For stamps of cold and hot (up to 650 ° C) deformation of metals, as well as for the well-sleeping parts of the mining and machine and machinery.
Third Group Electrodes that provide carbonaceous, alloyed (or high-alloyed) weld metal with high resistance under the conditions of abrasive wear and shock loads.
OZO-6 / 90X4G2S3R
For the well-wicked parts of mining, construction machines, etc., working with intense abrasive wear and significant shock loads.
OZO-7 / 75X5G4S3RF
For well-walked parts, mainly from high-headed steels 110g13l, working with intensive wear and under significant shock loads.
VNN-6 / E-110x14V13F2
For well-sleeping parts made of carbon and high-headed steels with significant shock loads under abrasive wear.
T-590 / E-320X25S2GR
For parts operating under abrasive wear under moderate shock loads.
Fourth group Electrodes that provide a carbon high-alloyed weld metal with high resistance under greater pressures and high temperatures (up to 680-850 ° C).
OZS-6 / 10X33N11M3SG
For the brine of radial forging machines, stamps of cold and hot (up to 800-850 ° C) deforming metals, a hot cutting knives of a metal, which are welcomed by equipment working in severe thermal deformation conditions.
Woni-13 / H1-BC / E-09X31N8AM2
For sealing surfaces of fittings, working in contact with high aggressive environments.
OPI-5 / E-10K18V11M10H3SF
For a metal-cutting tool, stamps are hot (up to 800-850 ° C) stamping and parts operating in particularly severe temperature and power conditions.
Fifth group Electrodes that provide a high-alloyed austenite weld metal with high resistance under conditions of corrosion-erosion wear and friction of metal about metal at elevated temperatures (up to 570-600 ° C).
CN-6L / E-08X17N8S6G
For sealing surfaces of parts of the fittings of boilers operating at temperatures up to 570 ° C and pressure up to 7800 MPa (780 kg / mm 2).
Sixth group Electrodes that ensure the preparation of a dispersed high-alloyed weld metal with high resistance in severe temperature and deformation conditions (up to 950-1100 ° C).
OZS-6 / 10X33N11M3SG
For blacksmith-stamping equipment of cold and hot deformation of metals, parts of metallurgical and machinery, working in severe conditions of thermal fatigue (up to 950 ° C) and high pressures.
OZS-8 / 11X31N11GSM3YUF
For a blacksmith-stamp equipment of hot deforming of a metal, working in superheavy conditions of thermal fatigue (up to 1100 ° C) and high pressures.

Electrodes for welding and surfacing cast iron

Such electrodes are intended to eliminate defects in cast-iron castings and to restore damaged and worn items. They can be used for the manufacture of welded-cast structures. Electrodes for cold welding and cast iron surfacing without prior heating, they give a filtered metal in the form of steel, alloys based on copper, nickel and ironoponeclae alloy. These are the brands of CEC-4, OZhch-2, ORC-6, etc. sometimes it is advisable to use other destination electrodes. So, when repairing pig-iron tubing in conditions of great pollution and high humidity It is better to take the brand of ovk-25b. The first layers on contaminated cast iron can be performed by stamps of OZL-27 and OZL-28. Successfully apply the brand of OZB-2M, intended for welding bronze.

Characteristics of electrodes for welding and surfacing cast iron

,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
CHF-4 / FEV
For welding and welding of casting defects in detail of gray, high-strength and carpet cast iron. Welding of gray and high-strength cast iron.
OZhch-2 / Cu
OZhch-6 / Cu
For welding thin-walled parts from gray and forging cast iron.
PMC-2 / Nicu
For welding, surfacing and welding of molding defects in details from gray and forging cast iron.
OZhch-3 / Ni
For welding and welding of casting defects in detail of gray and high-strength casts, when increased requirements for the purity of surface treatment are presented to the compounds.
OZhch-4 / Ni
For welding and surfacing parts made of gray and high strength cast iron. Preferred for the last layers working for abrasion or at shock loads.

Electrodes for welding non-ferrous metals

Designed for welding aluminum, copper, nickel and their alloys. Titanium and its alloys with manual arc welding coated electrode are not welded due to intense oxidation.

Aluminum welding electrodes. The main difficulty in welding aluminum and its alloys is the presence of oxide film. The temperature of its melting is 2060 ° C, while aluminum melting temperature is 660 ° C. A dense refractory film may disrupt the stability of the welding process and thus influence the quality of the formation of the seam, causing the appearance of internal defects in the weld metal. To remove the oxide film into the coating of the electrodes, chloride and fluoride salts of alkaline and alkaline earth metals are introduced. These substances provide high-quality welding.

Characteristics of electrodes for welding aluminum and its alloys

Electrode Brand / Main Metal Seam,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
Oza-1 / Al

Psol.

For parts and structures of technically pure aluminum A0, A1, A2, A3. Welding with preheating up to 250-400 ° C on stripped edges. Slag delete hot water and brushes.
Oza-2 / al

Psol.

For welding of injection molding and surfacing parts made of aluminum-silicon alloys AL-4, AL-9, AL-11, etc. Welding with preheated heating to 250-400 ° C on stripped edges. Slag remove hot water and steel brushes.
Ozane-1 / Al

Psol.

For details and structures of technically pure aluminum. Welding products with a thickness of more than 10 mm with a preheating up to 250-400 ° C at stripped edges.
Ozane-2 / Al

Psol.

For the welding of injection mold and surfacing parts made of aluminum-siliceous alloys AL-4, AL-9, AL-11, etc. Welding of parts with a thickness of up to 10 mm without heating, with large thicknesses - heated to 200 ° C at stripped edges.

Electrodes for welding copper and its alloys. When welding copper, the main problem is the formation of pores in the weld metal due to its high activity when interacting with gases, especially with oxygen and hydrogen. To avoid this, only well-stretched copper and thoroughly calcined electrodes are applied. The welding is performed according to the edges stripped to the metal glitter.

Brass welding is complex and dangerous for health due to intense zinc burnout.

Bronze welding delivers difficulties due to high fragility and insufficient strength in the heated state.

Characteristics of electrodes for welding copper and its alloys

Electrode Brand / Main Metal Seam,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
Komsomolets-100 / Cu

Pispets.

For welding and surfacing products from technically clean copper M1, M2, M3. Copper welding is possible with steel. Welding with preliminary heated up to 300-700 ° C.
Anz / OZM-2 / CU

Pispets.

For welding and surfacing products from technically clean copper with an oxygen content of not more than 0.01%. Welding with a thickness of more than 10 mm with a preheating up to 150-350 ° C.
Anz / OZM-3 / CU

Pispets.

For welding and surfacing technically clean copper (oxygen not more than 0.01%). Welding with steel is possible. Welding with a thickness of up to 10 mm short arc without heating and without cutting edges with one or two-sided seam with slight fluctuations of the electrode.
OZB-2M / CUSN
For welding and surfacing bronze, welding of bronze and cast iron defects. Welding and brass pressure is possible.
OZB-3 / CU

Pispets.

For surfacing, in the manufacture and restoration of electrodes of machines of contact point welding, including welding of rod fittings.

Electrodes for welding nickel and its alloys. The welding of nickel and its alloys is difficult due to the large sensitivity to the gases dissolved in a welding bath: nitrogen, oxygen and hydrogen, which causes the formation of hot cracks and pores. To prevent the appearance of these defects, it is necessary to use the main metal and welding electrodes of high purity and prepare them with high quality.

Characteristics of electrodes for welding nickel and its alloys

Mark electrode.,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
OZL-32.
For products from NP-2 nickel, on-1, for surfacing for carbon and high-alloyed steel in the apparatus operating in alkaline and chlorine-containing systems of soda production, soaps, production of synthetic fibers, etc., as well as nickel welding with carbon and corrosion-resistant steel. Welding with "rotational" rollers with amplitude of transverse oscillations of no more than two diameters of the electrode. The electrode is perpendicular to the product. The arc climbs gradually, pulling it on the filtered metal.
B-56u
For welding products from monoxide metal and equipment from two-layer steels (ST3SP + MONEEL-METAL) from the corrosion-resistant layer, as well as for surfacing. Possible welding of mono metal with low carbon steel. Welding with rollers up to 12 mm wide.

Metal cutting electrodes

Arc cutting of metal with coated electrodes is often used when installing and repairing metal structures. It is effective, since it does not require additional equipment and special qualifications of workers. The electrodes for cutting differ from the electrodes for high heat heat welding, high heat resistance of the coating, intense oxidation of liquid metal. These electrodes are advisable to apply to remove defective seams or their sites, removal of tapes, rivets, bolts, cutting cracks, etc. Blasting before welding: 170 ° C; 1h.

Characteristics of metal cutting electrodes

Mark electrode.,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
OZR-1.

Pispets.

Cutting, rigging, firmware holes, removal of defective sections of welded joints and castings, cutting edges and seam root, performing other similar work in the manufacture, installation and repair of parts and structures from steels of all brands (including high-alloyed), cast iron, copper and aluminum and their alloys. Provide a clean cut (without graphs and nodes on the surface of the cut). The cutting is produced on increased modes with an inclination of the electrode to the side opposite to the direction of cutting (forward angle). At the same time, the electrode must make reciprocal movements: "back-back" or "top-down".
OZR-2.

Pispets.

Cutting of rod fittings, rogue. Cutting, firmware holes, removal of defective sections of welded joints and castings, cutting edges and seam root, performing other similar works in the manufacture, installation and repair of parts and structures from all stamps (including high-alloy), cast iron, copper and Aluminum and their alloys. Provide a clean cut (without graphs and nodes on the surface of the cut). They have increased efficiency when cutting the construction rod fittings of large diameters (the time of cutting of the reinforcement with a diameter of 16 mm is 2-3 s, with a diameter of 40 mm - 14-16 s). The cutting is produced on increased modes with an inclination of the electrode to the side opposite to the direction of cutting (forward angle). At the same time, the electrode must make reciprocal movements: "back-back" or "top-down".

Electrodes for welding of doped heat-resistant steels

The electrodes for welding alloyed heat-resistant steels must first provide the necessary heat-resistance of welded joints - the ability to resist mechanically loads at high temperatures.

For structures operating at temperatures up to 475 ° C, molybdenum electrodes of type E-09M are used, and at temperatures up to 540 ° C - chromomolybdenum electrodes of E-09MX, E-09X1M, E-09X2M1 and E-05X2M.

For structures operating at temperatures up to 600 ° C, chromolibdenovanadium electrodes E-09X1MF, E-10X1M1NBF, E-10X3M1BF are used.

The E-10x5MF electrodes with an increased chromium content are designed for welding structures from steels with an increased chromium content (12x5m, 15x5m, 15x5mf, etc.) operating in aggressive environments at temperatures up to 450 ° C.

For welding heat-resistant steels, electrodes with the main coating are more often used, which ensures the strength of the weld metal at elevated temperatures, as well as a small tendency to the formation of hot and cold cracks.

Characteristics of electrodes for welding of alloy-resistant steels

Type E-09M For molybdenum steels
Mark.,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
CL-6.
Woni-13 / 15m
Tsu-2m
For steels 16m, 20m, etc., when welding steam pipelines, collectors of boilers operating at temperatures up to 475 ° C. Welding short arc on stripped edges.
Type E-09x1m
Woni-13khm.
For steels 15xm, 20xm, etc., including for welding pipelines and parts of energy equipment, operating at temperatures up to 520 ° C. Welding extremely short arc on stripped edges with preliminary and concomitant heated to 150-200 ° C.
TML-1.
For steam pipes operating at temperatures up to 500 ° C. The welding of a short arc along the stripped edges with preliminary and concomitant heated to 150-300 ° C. Possible welding in narrow cutting.
TML-1U.
For steels of 12mx, 15mx, etc., for welding pipelines and parts of energy equipment operating at temperatures up to 540 ° C. Welding short arc on stripped edges. It is possible to weld into a narrow cutting with an angle of the edge of the edges to 15 °. The arc is very stable. Slag is well separated.
Type e-05x2m For chromolibden steels with high chromium content.
N-10.
For welding doped heat-resistant chromolibden steels, steels of 10x2m, 12xm, 12x2m1-l, etc., operating at temperatures up to 550 ° C. The welding of a short arc along the stripped edges with preliminary and concomitant heated to 150-300 ° C.
Type E-09X2M1 For chromolibdden steels with high chromium and molybdenum content
TSL-55
For steels 10x2m, etc., including for welding pipelines operating at temperatures up to 550 ° C. A short arc welding on stripped edges with preliminary and concomitant heating to 150-300 ° C
Type E-09MX For chromolibdden steels.
Woni-13 / 45mh
For steels of 12mx, 15xm, etc., including for welding pipelines operating at temperatures up to 500 ° C. The welding of a short arc along the stripped edges with preliminary and concomitant heated to 150-300 ° C.
OZSC-11.
For steels of 12mx, 15mx, 12xmount, 15x1m1f, etc., for welding steam pipelines operating at temperatures up to 500 ° C. Welding short arc on stripped edges. Welding steels with a thickness of more than 12 mm with preliminary and concomitant heated to 150-200 ° C. Recommended for mounting work.
Type E-09X1MF
TML-3.
For welding of non-turning joints of pipelines operating at temperatures up to 575 ° C. The welding of the short arc along the stripped edges with preliminary and concomitant heated to 250-350 ° C. Slag is easily separated. High metal durability against the formation of pores in the seam.
TML-3U.
For steels 12mx, 15mx, 12x2m1, 12x1mf, 15x1m1f, 20xmf1, 15x1m1f-l, etc., incl. For pipelines operating at temperatures up to 565 ° C. The welding of the short arc along the stripped edges with preliminary and concomitant heated to 350-400 ° C. Welding into a narrow cutting with an angle of the edge of the edges to 15 °.
TSL-39.
For steels 12x1mf, 12x2mfs, 12x2mfb, etc., incl. For welding elements of heating surfaces of boilers and pipelines with a diameter of up to 100 mm with a wall thickness of up to 8 mm, working at temperatures up to 575 ° C. The welding of the short arc along the stripped edges with preliminary and concomitant heated to 350-400 ° C.
Type E-10x1m1NFB For chromolibdenovadyevadium steels
CL-27A.
For steels 15x1m1f, structures made of cast, forged and tube parts operating at temperatures up to 570 ° C. The welding of the short arc along the stripped edges with preliminary and concomitant heated to 350-400 ° C.
CL-36.
For steels 15x1m1f, 15x1m1f-l, etc., for welding steam pipelines and fittings operating at temperatures up to 585 ° C. The welding of the short arc along the stripped edges with preliminary and concomitant heated to 300-350 ° C.
Type e-10x3m1bf For chromolibdenovanadiyeobyovy steels
CL-26M.
For steels of 12khmfb, the surfaces of the heating of boilers operating at temperatures up to 600 ° C, as well as for thin-walled pipes of steps in assembly conditions. The welding of the short arc along the stripped edges with preliminary and concomitant heated to 300-350 ° C.
Tsl-40.
For steels 12x2mfb, incl. thin-walled pipes of steps, surfaces of heating boilers operating at temperatures up to 600 ° C. The welding of the short arc along the stripped edges with preliminary and concomitant heated to 300-350 ° C. Made with a diameter of 2.5 mm.
Type E-10x5MF For chromolibdenovadium and chromolibded
Tsl-17.
For steels 15x5m (x5m), 12x5m, 15x5mf in responsible structures operating in aggressive environments at temperatures up to 450 ° C. The welding of a short arc along the stripped edges with preliminary and concomitant heated to 350-450 ° C.

Electrodes for welding of high-alloy steels

Steels containing 13% chromium are considered highly chromium stainless. They have resistance to atmospheric corrosion and in weakly aggressive environments. These are steel 08x13, 12x13, 20x13, which differ in weldability depending on the content of carbon.

When choosing electrodes for welding such steels, the following properties of the seam metal should be ensured: resistance to atmospheric corrosion and in poorly aggressive media, heat resistance to a temperature of 650 ° C and heat-resistance to a temperature of 550 ° C. These requirements satisfy electrodes of type E-12x13 grades of LMZ-1, ANV-1, etc., which provide the chemical composition, structure and properties of the weld metal, close characteristics of the base metal.

For welding steels with a reduced carbon content and additionally doped with nickel, the electrodes of the E-06x13n of the TsL-41 brand are recommended.

With an increase in the amount of chromium, the corrosion resistance and heat resistance of high-chromium steels increase. The content of 17-18% gives corrosion resistance in liquid medium aggressive environments. Such steels belong to the acid-resistant: 12x17, 08x17t, 08x18t, etc. If the chromium amount reaches 25-30%, then heat resistance increases - resistance to gas corrosion at temperatures up to 1100 ° C. These are heat-resistant steel: 15x25t, 15x28, etc. The steel and electrodes in which at least 25% chromium are suitable for sulfur-containing environments.

The choice of electrodes for welding high-tech steels depends on the amount of chromium in the welded steels. So, for welding steels with 17% chromium, to which the requirements for corrosion resistance in liquid oxidation media or heat resistance at temperatures up to 800 ° C are recommended, electrodes of the E-10X17T grades of VI-12-6, etc. are recommended.

For welding steels with 25% chromium, electrodes of type E-08x24N6TAFM, which give metal seam after vacation High plasticity, shock viscosity and resistance to intercrystalline corrosion are applied.

The welding of high-chromium steels should be performed with moderate modes with reduced routine energy. After each pass, it is recommended to cool the metal zone metal to a temperature below 100 ° C, which ensures minimal grain growth.

Highly chromed steel based on 13% chromium with additional doping of molybdenum, vanadium, tungsten and niobium relate to heat-resistant. They are able to withstand mechanical loads at high temperatures. When choosing electrodes for these steels, the basic requirement is to provide the necessary level of heat-resistant seam metal. This is achieved by obtaining the chemical composition of seams close to the main metal. This condition is most fully satisfied by the electrodes of the types of E-12x11NMF of the KTI-9A, E-12x11NVMF brand KTI-10, E-14X11NVMF brand CL-32.

Characteristics of electrodes for welding high-alloy chromium steels

Type E-12x13 For corrosion-resistant steels
Mark.,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
Woni-13 / NJ 12x13
For welding Steel 08x13, 12x13, 20x13, et al., Working at temperatures up to 600 ° C, as well as the surfacing of the sealing surfaces of steel reinforcement. Welding with preheating up to 200-250 ° C. In the atmosphere of steam and in air provide heat-resistance to 540 ° C, heat resistance up to 650 ° C.
LMZ-1
For steels 08x13, 1x13, 2x13, etc., operating in fresh water and weakly aggressive environments at normal temperatures. For the surfacing of the sealing surfaces of the reinforcement. The welding of the short arc along the stripped edges with preliminary and concomitant heated to 300-350 ° C. After welding, vacation is required.
ANV-1
For steels 08x13, 12x13, etc., working in fresh water and weakly aggressive environments at normal temperature. Suitable for surfacing reinforcement sealing surfaces. After welding, vacation is required. In the atmosphere of steam and air provide heat-resistance to 540 ° C and heat resistance to 650 ° C.
Type e-10x17t For corrosion-resistant and heat-resistant steels
Woni-13 / NZ 10x17T
For steels 12x17, 08x17t, etc., working at elevated temperatures and in oxidative environments. Welding with a short arc along the stripped edges with minimal heat dissipation. Heat resistance up to 800 ° C.
VI-12-6
For steels 12x17, 08x17t, etc., operating in oxidative environments at temperatures up to 800 ° C. Welding short arc on stripped edges.
Type E-06x13n For corrosion-resistant steels alloyed by nickel
TSL-41.
For steels 0x12nd, 10x12nd-l, 06x12n3d, 06x14n5dm, etc., operating at temperatures up to 400 ° C. The welding of a short arc along the stripped edges with preliminary and concomitant heating to 80-120 ° C.
Type E-12X11NMF For heat-resistant steels
KTI-9A.
For steels 15x11mf, 15x11VF, etc., working at temperatures up to 565 ° C. Welding short arc on stripped edges.
Type E-12x11NVMF For heat-resistant steels
KTI-10.
For steels 15x11mf, 15x12VNMF and 15X11MFB-L, working at temperatures up to 580 ° C. Short arc welding on stripped edges without heating electrode vibrations up to 350-400 ° C
Type E-14X11NVMF For heat-resistant steels
TSL-32.
For welding steam heaters of boiler steels of steels 10x11V2MF, etc., operating at temperatures up to 610 ° C. Welding short arc on stripped edges.
Type e-10x16n4b For corrosion-resistant and heat-resistant steels.
Woni-13 / EP-56
For designs from steels 09x16n4b et al., Working in aggressive media, and for welding high pressure pipelines.

Electrodes for corrosion-resistant acid resistant steels. The basic requirement when choosing electrodes for welding acid-resistant steels is to ensure the corrosion resistance of the seam metal in liquid aggressive environments at normal and elevated temperatures and pressures. The most aggressive liquid media includes acids and their solutions that possess both oxidative and non-oxidative properties.

For welding structures from acid-resistant steels working in non-oxidative liquid media at temperatures up to 360 ° C and not subjected thermal processing After welding, the EA-400 / 10T, EA-400 / 10T, EA-400 / 10T, and others, EA-400 / 10T, etc., EA-606/10 brands, are recommended. Thermal processing of welded connections made by these electrodes is not allowed.

For designs working in non-oxidative or low-oxygen-free liquid environments, for which leave is needed after welding, the electrodes of the EA-898/19 brand are recommended, which ensure the resistance of the seam against intercrystalline corrosion both in the initial state and after the vacation.

Designs that are operated in oxidative liquid media, for example in nitric acid, it is recommended to weld the electrodes of the E-08X19N10G2B type TsT-15, ZIO-3, etc..

For low-carbon acid-resistant steels containing up to 0.03% carbon, the electrodes of the types of E-04X20H9 grades of the OBL-14A, OZL-36 are used; E-02x20n14g2m2 LAM-20 brands and others.

Characteristics of electrodes for welding of corrosion-resistant acid steels

Type E-08X19N10G2B
Mark.,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
CT-15.
ZIO-3.
For steels with nickel content up to 16% - 08x18n10t, 12x18n12t, 08x18n12b, etc., operating in oxidative environments. Heat resistance up to 650 ° C.
Type E-07x20n9
OZL-8.
OZL-14.
Woni-13 / NJ 04х19Н9
do not prevent
LEZ-8.
For steels 08x18n10, 12x18n9, 12x18n10t, etc., when to metal seam do not prevent Strong requirements for resistance against intercrystalline corrosion.
OZL-8.
For steels 08x18n10, 12x18n9, 12x18n10t, etc., when to metal seam do not prevent Strong requirements for resistance against intercrystalline corrosion. Welding short arc on stripped edges.
CT-50.
For steels 08x18n10, 12x18n9, 12x18n10t, etc., when strict requirements for resistance against intercrystalline corrosion are presented to the metal of the seam. Welding short arc on stripped edges.
Type e-08x19n9f2g2cm
EA-606/10
For steels 09x17n7u, 09x15n8y and others, as well as for steels 14x17n2, etc.
Type e-07x19n11m3g2f
EA-400 / 10U
EA-400 / 10T
For steels 08x18n10t, 12x18n10t, 08x17n13m2t, etc., operating in liquid aggressive environments at temperatures up to 350 ° C and not exposed after welding with heat treatment. Suitable for surfacing anti-corrosion coating. Resistance to intercrystalline corrosion is provided in a state after welding and after austenization. Electrodes EA-400 / 10T provide better than EA-400 / 10U, Slag separability. Electrodes TSL-11. For more corrosion stories.
Type e-08x19n9f2c2
EA-606/11
For steels 08x18n10t, 12x18n9t, etc., operating at temperatures up to 350 ° C and not exposed after welding with heat treatment. Not recommended for welding steels, not doped with titanium or niobium.
GL-2.
For steels 08x18n10t, 12x18n9t, etc., operating at temperatures up to 350 ° C and not exposed after welding with heat treatment. Not recommended for welding steels not doped with titanium or niobium
Type E-08X19N10G2MB
EA-898/19
For steels 08x18n10t, 08x17n13m2t, etc., operating in oxidative and low-oxygen media at temperatures up to 350 ° C and exposed after welding with heat treatment.
Type e-04h20n9
OZL-36.
OZL-14A.
ANV-32.
Woni-13 / NZ-2 / 04X19N9
For steels 08x18n10t, 06x18n11, 08x18n12t, 04x18n10, etc., when requirements for resistance against intercrystalline corrosion are presented to the metal of the seam, both in the initial state and after short-term exposures in the critical temperature range. Heat resistance up to 800 ° C without sulfur-containing gases.
Type e-02x20n14g2m2 For corrosion-resistant steels with reduced carbon content
OZL-20.
For steels 03x16n15m3, 03x17n14m2 with strict requirements for seams for resistance against intercrystalline corrosion.

Electrodes for welding of corrosion-resistant high strength steels. The choice of electrodes for such steels is very limited. So, for steels 12x21n5t, 08x21n6m2t are recommended electrodes that give metal seams on the structure not the same type with the main metal, but otherwise. In this case, the electrodes of the types of E-08X20N9G2B TSL-11 brands, OZL-7, etc. can be used e-09x19n10g2m2m2b stamps of EA-902/14, ANV-36, EA-400/13, etc. for high-alloyed steels 12x25n5TMFL And the 10x25N6ATMF is provided by one type of electrodes - E-08x24N6TAFM, which includes the electrodes of the N-48 brand. The metal seam is equal to the main metal with a thickness of up to 200 mm. The electrodes of this type can also be used for steels 12x21n5t, 08x21n6m2t. For steels 08x22n6t and 08x21n6M2T, electrodes of OBL-40 and OZ-41 were developed, which increase the corrosion resistance of the seams when working in alkaline environments. Characteristics of electrodes for welding of corrosion-resistant high strength steels

Type E-08x20n9g2b
Mark.,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
TSL-11.
For welding structures from corrosion-resistant and heat-resistant steels of austenitic class type 08x18H10t, 08x18H18H18H18H18H18H18H18H18H18H12B, and them like those operating in aggressive media at a temperature of not more than 400 ° C, when strict requirements for resistance against intercrystalline corrosion are presented to metal.
OZL-40 and OZL-41
For steels 08x22n6t, 08x21n6m2t, etc., working in aggressive environments.
CT-15K.
For steels 10x17n13m2t, 08x18n10, etc., operating at temperatures up to 600 ° C. Suitable for surfacing the anti-corrosion layer.
OZL-7.
For steels 08x18H10, 08x18n10t, 08x18n12b, etc., working in aggressive media, when strict requirements for resistance against intercrystalline corrosion are presented to the metal of the seam.
Type E-09X19N10G2M2B
EA-902/14
EA-400/13
NJ-13
ANV-36.
For designs from steels 10x17n13m3t, 08x17n15m3t, 10x17n13m2t, X18N22T2T2, etc., working at temperatures up to 550 ° C, when strict requirements for resistance against intercrystalline corrosion, not subjected to heat treatment after welding, are presented. The welding of the short arc along the stripped edges of the "thread" seams without transverse oscillations. Electrodes ANV-36. They are distinguished by easy ignition of arc and small splashing.
SL-28
For designs from steels 10x17n13m3t, 08x17n15m3t, 10x17n13m2t, X18N22T2T2, etc., working at temperatures up to 550 ° C, when strict requirements for resistance against intercrystalline corrosion, not subjected to heat treatment after welding, are presented. The welding of the short arc along the stripped edges of the "thread" seams without transverse oscillations.
Type E-08x24N6Tafm
N-48.
For steels 12x25n5TMFL, 12х21Н5Т, 08х22Н6Т, etc., working in non-oxidative aggressive environments at temperatures up to 300 ° C

Electrodes for welding of heat-resistant (loan-resistant) steels. The heat-resistant (loan-resistant) are considered to be able to resist the chemical destruction of the surface in the air or in another gas medium at temperatures above 850 ° C in unloaded or low-loaded states. They contain up to 20-25% chromium and operate at temperatures up to 1050 ° C and higher.

The heat resistance of the weld metal is up to 1000 ° C on steels 20x23n13, 20x23n18, etc. is achieved by electrodes of type E-10X25N13G2 grades S-25, OZL-6, CL-25.

For welding heat-resistant steels, long-working at temperatures above 1000 ° C, electrodes of the E-12H24H24C2 grades 2, CT-17, etc., as well as electrodes of the E-10X17H13C4 OBL-29 brand, apply, providing heat resistance to a temperature of 1100 ° C in oxidative and carburry media. For structures working in sulfur-containing media, genuid high-chromium heat-resistant steel 15x25t, 15x28, etc.

Characteristics of electrodes for welding heat-resistant (loan-resistant) steels

Type e-10x25n13g2
Mark.,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
Woni-13 / NZ-2 / 07х25N13
ZIO-8.
TSL-25.
OZL-6.
For 10x23n18, 20x23n13, 20x23n18, etc., operating in media without sulfur compounds at temperatures up to 1000 ° C, as well as for two-layer steels from the doped layer without resistance to intercrystalline corrosion. The seams are prone to embrittlement at 600-800 ° C. Short arc. Thermal preparation of the edges is not allowed.
SL-25.
The same, for heat-resistant steels.
Type e-12х22Н14С2
OZL-5.
CT-17.
For steels 20x25n20c2, 20x20n14c2 et al., Working at temperatures up to 1100 ° C in oxidative and carburry media. Welding with narrow rollers.
Type e-10x17n13c4
OZL-29.
OZL-3.
For steels 20x20n14С2, 20х25Н20С2, 45х25Н20С2, etc., working at temperatures up to 1100 ° C in oxidative and carburry media, as well as for steel 15x18H12С4Th, working in aggressive environments without high resistance to intercrystalline corrosion.

Electrodes for welding heat-resistant steels. Heat resistant include steel, which operate in a loaded state at high temperatures for a certain time and have sufficient resistance against Okalin formation. High heat resistance of chromonichel steels is achieved by increasing the content of nickel and additional doping titanium, niobium, molybdenum, tungsten, etc.

It should be borne in mind that the heat resistance of welded compounds can differ significantly from the heat resistance of the main and deposited metals. Therefore, the choice of electrode on the principle of equal or close heat resistance of the seam and base metal is justified only for short-term resources for the operation of welded joints. For long-term resources, it is better to take electrodes that give a more plastic metal seam. This principle corresponds to the electrodes alloying metal seam molybdenum - type E-11X15N25M6Ag2 EA-395/9 brands, CT-10, NIAT-5 and type E-08x16H8M2 of the TsT-26 brand.

For welding heat-resistant steels containing up to 16% of nickel and working at temperatures up to 600-650 ° C, as well as if welded connections after welding are thermally treated by vacation, the electrodes of types of E-09X19N11G3M2F CTI-5 brands, CT-7 and E- 08х19Н10Г2Б (see above) TsT-15 and ZIO-3 brands.

When welding the root layers of multi-layer joints of heat-resistant steels, when the mixing of the base metal with the weld high and does not provide the technological strength of the seams, the electrodes of the type E-08x20n9g2b of the CT-15-1 brand should be applied.

For welding heat-resistant steels containing 35% nickel and doped with niobium, which operate at temperatures up to 700-750 ° C, use electrodes of E-27X15N35V3G2B2T CTI-7 and KTI-7A brands.

For welding heat-resistant steels with 35% nickel, but without niobium, but doped with molybdenum and manganese, the electrodes of types of E-11x15N25M6Ag2 EA-395/9 brands, NIAT-5, CT-10 and E-09X15N25M6Ag2F brand EA-981/15 are used. In this case, it is necessary to take into account that the metal is filtered by such electrodes, not racks against intercrystalline corrosion in the state after welding and after heat treatment, therefore such electrodes are unsuitable if the design also works in a liquid aggressive environment. The layers in contact with the aggressive medium should be performed by electrodes of type E-07x19H11m3 (see above) EA-400 / 10U and EA-400 / 10T brands.

Characteristics of electrodes for welding heat-resistant steels

Type e-11x15n25m6Ag2
Mark.,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
EA-395/9 and CT-10
For steels and alloys of HN35W, X15N25AM6, etc., containing up to 35% nickel, but without niobium working at temperatures up to 700 ° C. For heterogeneous compounds of high-alloy steels with carbon and low-alloyed. For designs operating at temperatures up to -196 ° C. Short arc. Clean the edges.
NIAT-5.
For steels and alloys of HN35W, X15N25AM6, etc., containing up to 35% nickel, but without niobium working at temperatures up to 700 ° C. For heterogeneous compounds of high-alloy steels with carbon and low carbon monogram. For designs operating at temperatures up to -196 ° C. Short arc. Clean the edges.
Type e-08x16n8m2
CT-26
For steels 10x14n14V2m, 08x16n13m2b, etc., in steam pipelines operating at temperatures of 600-850 ° C.
Type E-08x20n9g2b
CT-15-1.
For welding root layers of seams performed by CT-15 electrodes.
Type E-09X19N111G3M2F
KTI-5.
CT-7.
For steels 08x16n13m2b, 15x14n14m2BFBTL (LA-3), etc., operating at temperatures up to 600 ° C and subjected to heat treatment, as well as for welding of casting defects from these steels. Short arc welding on stripped edges with short rollers without transverse oscillations.
Type E-27X15N35V3G2B2T
KTI-7
KTI-7A.
For alloys on the iron alcoholic basis, the XN35W, XN35BTU, etc., long working at temperatures up to 750 ° C, as well as for reaction pipes in the conversion of metal conversion from steels 45x20n35С, 25x20n35, etc., operating at temperatures up to 900 ° C. Short arc welding with narrow rollers without transverse oscillations.
Type E-09X15N25M6Ag2F
EA-981/15
For welding high-alloyed corrosion-resistant chromonicelmolibden and chromonicelmolibdenovanadium steel, as well as high-strength steels of type AK and high-headed steels of type 110g13-l.

Electrodes for welding of heterogeneous steels and alloys

Droinen steels and alloys are considered materials that are sharply characterized by physicomechanical properties, chemical composition and weldable. As a characteristic of heterogeneity, it is possible to divide into 4 groups: carbon and alloyed, alloyed with increased and high strength, heat-resistant, high-alloyed.

Welding of heterogeneous steels and alloys can differ significantly from welding of homogeneous materials, as the probability of the appearance of cracks in the weld metal increases, the occurrence of sections in the zone of sections with structural heterogeneity, excessive growth of residual stresses due to a large difference in the coefficients of the expansion of the welded materials.

Most electrodes used in welding heterogeneous steels and alloys belong to the electrodes intended for welding high-alloy steels and alloyed steels of increased and high strength, which give seam with a homogeneous high-pile metal structure.

The selection of the electrode can be made according to the table, compiled, taking into account the domestic experience of welding of heterogeneous metals.

Characteristics of electrodes for welding of heterogeneous steels and alloys

Mark electrode.,
Scope and technological features
Pumped
gyut
Rod, current polarity Coef. nap-
benches, g / a h
Polo-
shvov.
ANZhR-1.
ANZhR-2.
Welding of heat-resistant steels with high-alloy heat-resistant steels.
OZL-27.
OZL-28.
Welding of carbon steels with doped, including with hardware fabricated steel.
OZL-6.
OZL-6S.
Welding of carbon and low alloy steels with high-alloyed steel.
NIAT-5.
EA-395/9
Welding of low-alloyed and alloyed steels with high-alloyed steel.
OZL-25B.
Welding of heterogeneous steels: corrosion-resistant, heat-resistant, heat-resistant and nickel-based alloys.
Have-10
Welding of heterogeneous heat-resistant steels and alloys.
CT-28
Welding of carbon, low-alloyed and chromium steels with nickel-based alloys.
NII-48g
Welding of low-alloy, special and high-headed steels with high-alloyed steel

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