Argon arc welding stainless steel welding methods and techniques

1. Welding of the base. The base weld shall not contact and melt the composite material. When the base material is welded first, the root or surface of the weld should be 1-2mm away from the composite interface. the residual height of the weld should be in accordance with the provisions of relevant standards. According to the thickness of base material, steel type and structure, appropriate preheating treatment can be used if necessary.

2. Transition layer welding. Welding of the transition layer, to ensure good fusion under the premise of minimizing the amount of melting of the base material, reduce the fusion ratio. Therefore, should use smaller diameter welding rod or wire and smaller wire energy. The thickness of the transition layer should be not less than 2mm.

3. Welding of the cladding layer. Welding cladding layer, attention should be paid to the protection of the surface of the cladding layer, to prevent welding spatter damage to the surface of the cladding layer, do not allow arbitrary in the surface of the cladding layer of the arc, weld scars, rings and temporary support. The surface of the cladding weld should be as flat and smooth as possible. Butt weld super high not more than 1.5 millimeters ...