Wire is used for welding. Currently, there are several varieties. One of the most popular products is wire with a high level of alloying SV08G2S. It is used for various types of welding. It is also used as one of the materials in the manufacture of electrodes for surfacing.
Where alloy wire is used
The SV08G2S wire is most often applied when carrying out works on welding machines and semiautomatic devices in industrial conditions. Applying it, it is possible to carry out manual welding of various products from steel. Applying this consumable, you can get a high quality welded joint. The seam is smooth and clean.
Areas of application
Wire of this brand is indispensable in the following operations:
- formation of the roller on a connecting seam;
- filling the space between the edges of the welded workpiece.
When performing welding work, this hardware is the main element of technological processes. Welding in such spheres is not possible without it, as:
- construction;
- engineering;
- aircraft, shipbuilding.
Also note, that this alloy wire for welding can be used as an effective filler material. One of the characteristic features is a high surfacing coefficient. This ensures high quality performance of complex surfacing activities.
Recently, high-alloy wire for welding is actively used when performing work in a gaseous atmosphere. Argon or a mixture of gas with others is usually used to create such an environment. Carbon dioxide is often used to form this medium. The choice in favor of the latter is dictated by its lower cost compared to argon. When welding is carried out in a carbon dioxide environment, used direct current. Note, that such an environment is recommended for the performance of welded joints of carbon steel products.
Requirements for welding wire SV08G2S
In the state standard 2246-70 recorded technical characteristics and chemical composition of products for welding these hardware. Normative documents regulate the content of the following elements in this material as a percentage:
- nickel - the amount of this element is up to 0,25;
- chromium - its content does not exceed 0,2;
- manganese - its value can reach 2,1;
- silicon - the content of this element can reach up to 0,95;
- sulfur - in the metal content of this component can reach 0,025;
- phosphorus - it is contained in this hardware in quantity 0,03;
- carbon - its value varies from 0,05 to 0,11.
Such elements, like aluminum, vanadium and a number of other copper-plated alloy wire SV08G2S is usually not alloyed. It is unacceptable to have manganese in the amount of 0,65 to 2,1%. Note, that this requirement applies only to hardware, whose diameter does not exceed the value 1,4 mm. If the usual wire is made, then the copper content in it can not be more 0,25%. Standards allow content in it to 0,01% nitrogen. This hardware is used not only for welding, but also for surfacing.
Currently, hardware of this brand is available in cross section from 0,3 to 12 mm. Finished products are packed in skeins. The maximum weight of the skein can reach 30 kg. Copper-plated wire can be formed into skeins rectangular in cross section. Their height is 50-90 mm The inner diameter of this metal product can vary from 100 to 400 mm. As for the outer diameter, it varies from 175 to 600 mm.
If there is permission from the consumer, then alloy welding wire can be supplied in coils or cassettes. It should consist of segments without breaks. Winding of a product is carried out densely in equal rows. The possibility of unwinding or untangling of the material during transport must be excluded.
Important characteristics
At the alloyed welding wire СВ08Г2С the size of resistance to rupture should fluctuate from 882 to 1372 MPa. These requirements apply to welding hardware with a diameter of 0,3 to 0,5 mm. For welding wire diameter 2 mm this requirement is expressed in resistance to 686 to 1029 MPa. Plain and copper-plated wire can be heat-treated, if these indicators are not provided by production technology.
The copper-plated wire for welding of the SV08G2S brand on the surface has the remains of soap lubricating structure. It is worth saying, that its presence does not violate the requirements of state regulations. We pay attention to that, that the presence of such substances in the oil is permissible, both sulfur and graphite.
Why you need to know the deposition rate?
Performing surfacing work, the specialist must know, what is the surfacing coefficient of the wire used by them. It should be understood as a value, which describes the metal deposited for a specific time at a certain current. The coefficient of surfacing of metal products is usually not less 8,5 d / A * h Its usual value depends on:
- chemical composition of metal products;
- type of product coating;
- polarity and type of current, which is used to perform surfacing.
Productivity of operations on surfacing in many respects depends on coefficient of surfacing of hardware СВ08Г2С. Also, this figure affects the number of losses of the weld by evaporation, as well as for spraying and oxidation. Another analyzed indicator determines the melting coefficient of the base metal, as well as a number of other important characteristics and welding operations.
Deciphering the brand of wire of its dignity
Very difficult to understand, which is a welding wire of the SV08G2S brand, does not represent. The letters at the beginning indicate the welding wire. Figures 08 indicate the content in the wire of hundredths of carbon. The letter G means manganese, and the number after it - the quantitative content in the wire of this element - 2%. The letter means silicon. If the number after this letter is missing, then it should be understood as that, that silicon is contained in the wire of the described brand in quantities less 1 percent.
Manganese is present in the welding hardware of this brand. It increases the strength of the connection, because this element forms a pronounced crystal lattice of the welded joint. Silicon improves the mechanical properties of the product. In hardware, described in this article, the content of silicon and manganese is optimal (0,83/1,95). This provides a number of advantages of its use for surfacing:
- its use allows you to get high quality connections;
- hardware provides high characteristics of seam strength;
- thanks to it the minimum prime cost of production of a welded material is provided;
- hardware of this brand has a stable chemical composition.
Conclusion
When performing welding work, do not do without the use of welding wire. It allows you to create a quality welded joint. Currently, there are a large number of brands of welding wire on the market. Many experts when performing welding work use hardware СВ08Г2С. Thanks to the components, included in the composition, its application allows you to perform high-quality welding work and get a reliable welded joint.