Stainless steel is short for stainless steel, resistant to air, steam, water and other weak corrosion medium or stainless steel. And stainless steel material because of its good weldability, corrosion resistance, polishing performance, heat resistance is widely used in construction, food, chemical and medical and health fields, but the use of stainless steel in machining need to pay attention to the following points:First of all, the platform of stainless steel parts processing area should take protective measures to avoid damage to the surface protective layer of stainless steel parts, such as paving rubber pads. Secondly, before production or production process sometimes see stainless steel products or equipment rust, which shows that the surface is seriously polluted. Rust must be removed before the equipment is put into use and thoroughly cleaned surfaces shall be inspected by iron and/or water tests. In addition, when the welder starts the arc on the metal surface, it will cause surface roughness defects. The protective film is damaged, leaving a potential source of corrosion. The welder should arc in the already soldered path or on the side of the weld joint, and then fuse the arc marks into the weld. Finally, welding defects such as edge biting, incomplete penetration, dense porosity and cracks may occur in the welding process, which not only reduce the fastness of joints, but also become the corrosion source of crack corrosion. These defects can be repaired by re-welding or re-welding after grinding.
