How to weld stainless steel sheet? What welders have to learn

Characteristics of argon arc welding of stainless steel sheet (1) the thermal conductivity of stainless steel sheet is poor and it is easy to burn through. (2) welding wire is not required during welding, and the base metal is directly fused. Therefore, the welding quality of stainless steel sheet is closely related to the operator, equipment, materials, construction methods, external environment and inspection during welding. In the welding process of stainless steel sheet, there is no need for welding materials, but the following materials are highly required: First, the purity of argon, the flow rate and the time of passing argon, Second, tungsten electrode, a good tungsten electrode has a crucial impact on the welding results. (1) argon The purity of argon must be more than 99.99%. Argon is mainly used to protect the weld pool effectively. It can prevent air from corroding the weld pool and causing oxidation during the welding process. Meanwhile, it can isolate the weld area effectively to protect the weld area and improve the welding performance. (2) tungsten electrode The surface of tungsten electrode should be smooth, the end must be sharpened, and the concentricity should be good. In this way, the high frequency arc striking is good, the arc stability is good, the melting depth is deep, the weld pool can be kept stable, the weld formation is good, and the welding quality is good. If the tungsten electrode surface is burned out or there are pollutants, cracks, shrinkage holes and other defects on the surface, it is difficult for high-frequency arc striking during welding. The arc is unstable, the arc has drift phenomenon, the weld pool is scattered, the surface is enlarged, the weld depth is shallow, the weld formation is poor, and the welding quality is poor. Tungsten quality is very important! North tungsten new material tungsten electrode expert Multiple composite tungsten electrode wx4. At the same time, four kinds of rare earth elements with different properties are added to ensure that the electron emission ability of tungsten electrode can be developed in time, stably and continuously under any complex conditions. “Fire resistant, all-round and environmental friendly” conclusion (1) the stability of TIG welding is good, different shapes of tungsten electrode have great influence on the welding quality of stainless steel sheet. (2) flat top tapered end tungsten electrode welding can improve the forming rate of single side welding and double side welding, reduce the heat affected zone of welding, make the weld shape beautiful and have good comprehensive mechanical properties. (3) correct welding method can effectively prevent welding defects.铜焊丝,Copper Welding Rods,铝焊丝,aluminium welding wire,镍焊条,Nickel electrode,药皮焊条,Flux Coated Brazing Welding Rods