Q:What are welding wires for 20G and 15CrMO?

20G belongs to the 15CRMO belongs to carbon steel, heat-resistant steel, welding wire should be used ER55-B2, TIG-R30 for 1.25%Cr-0.5%Mo heat-resistant steel, such as 15CrMo, P11, P12, no national and industry standard, Shanghai electric power equipment factory and other enterprises have the enterprise standard Q/FAAX-31, equivalent to GB/T8110 ER55-B2.Welding: welding, can also be written as "welding" or welding, melt, is two or more than two kinds of material (homogeneous or heterogeneous) by heating and pressurizing, or both, so that the two parts produce atomic binding processing and connection mode. Welding is widely used, both for metals and for metals.

Q:72173090 is the HS encoding of the welding wire?

NoThe welding wire should fall under the 8311 item

Q:What is the advantage of welding wire without copper plating?

The copper plating wire at the beginning to rust, but in the use of the process can also be found conductive, the worst is the operator in the use process of smoke inhalation of copper is harmful to the body, and the production process will emit large quantities of sewage (which contains alkali, acid, borax, copper sulfate) of serious pollution to the atmospheric environment; the production process is now copper coated wires, no sewage nor copper smoke, small splash, small smoke (no copper smoke), good shape, environmental protection and energy saving.

Q:What gas should be used in the use of stainless steel wire for nitrogen dioxide gas shielded welding?

Different types of welding wire are suitable for different protection gases. At present, there are pure argon gas market, but also mixed gas protection, but also pure CO2 gas protection.Look at the wire you bought, which manufacturer, a phone call in the past, people will tell you.

Q:Does argon arc welding thick material need no welding wire?

Argon arc welding is not like welding, welding electrode itself is filling material, argon arc welding is no filling material. Argon arc welding stainless steel without welding wire is formed by melting the base metal. Such as two stainless steel butt welding wire, in no case, two pieces of plate must be no gap, when the tungsten needle alignment weld produced high current that produce high temperature, the two panels are also melting, loosen the gun switch after the melting of stainless steel water condenses together welded together, if we must have with the wire.Summary: no welding wire welding workpiece can solder together must leave, if even only 0.5mm are difficult to weld, first after welding, the welding, the welding speed should be uniform, without wires, not large current about 20A, from the middle to both sides welding. After welding, the main point of non deformation is that the plate should be docked and added at least 1 centimeters a point. The copper lining under the condition plate is best, and the weldment can be placed on the platform or made as a fixture. Speed must be fast, the more slowly, the more deformation.

Q:2.4, arc welding of stainless steel wire 308 and 308L difference between large? Can I change it between you and me?!

2.4 argon arc welding stainless steel wire 308 and 308L are not very different, 308L can be general 308.You can use 308 for 308L, and L for low carbon. The rest are the same.The carbon content of 308L is less than 0.03., and the carbon content of is less than 0.08.. In weldability, 308L can instead of 308, and vice versa.

Q:Why is welding wire plated copper?

The main purpose of copper wire welding is corrosion protection, because the main component of the wire is steel, and the bare leakage is easy to rust and corrosion in the atmosphere. The surface coating of copper can effectively prolong the shelf life. Furthermore, electrical conductivity can be enhanced.Welding wire is used as filler metal or metal wire welding material at the same time as conductive. In gas welding and gas tungsten arc welding, welding wire used as filler metal; in submerged arc welding, electroslag welding and MIG arc welding, welding wire as filler metal, and conductive electrode. The surface of the wire is not coated with anti oxidizing flux.

Q:What type of welding wire is used for 5052 aluminum plate welding?

You can use the ER5356 welding wire, 5356 chemical composition: Si:0.25; Fe:0.40; Cu:0.10; Mn:0.05-0.20; Mg:4.5-5.6; Cu:0.02--0.20; Zn:0.10- 0.20; Ti:0.06--0.20: Al; margin; 5336 mg high.

Q:Can ER308 welding wire be replaced by ER321?

ER308 welding wire can be replaced by ER321.ER308's national brand is H08Cr21Ni10Si;ER321's national brand is H08Cr19Ni10Ti;Compared with ER308, Cr-Ni element has little difference, but only adding stabilizing element Ti to ER321 can improve the intergranular corrosion resistance of ER321 welding seam.Welding wire is used as filler metal or metal wire welding material at the same time as conductive. In gas welding and gas tungsten arc welding, welding wire used as filler metal; in submerged arc welding, electroslag welding and MIG arc welding, welding wire as filler metal, and conductive electrode. The surface of the wire is not coated with anti oxidizing flux.

Q:I am the manufacturer of stainless steel welding wire, and I have been asked by the customer - stainless steel wire outlet customs code. I do not know, please know the friend told me, I will be very grateful.

HS coding export name, measurement unit, tax rate, tax rebate rate, starting date, expiry date, consumption tax rate, regulatory conditions7326201000 industrial iron and steel products, kg 17, 5, 2007-07-01, 2100-12-31, none