The laser welding machine for silicon steel sheet is suitable for welding thin materials with stable welding quality without deformation, realizing automatic mass production, improving production efficiency and yield. The production efficiency is multiple times higher than that of traditional welding methods and saving cost.
The restraint of stainless steel sheet is small. It is subject to local heating and cooling during welding, resulting in uneven heating and cooling, which will produce uneven stress and strain. When the pressure of the longitudinal shortening of the weld on the edge of the thin plate exceeds a specific value, it will produce serious wavy deformation and affect the shape quality of the workpiece.
Main measures to solve burn through and deformation of stainless steel sheet during welding:
Strictly control the heat input on the welded joint and select the appropriate welding mode and process parameters, mainly including welding current, arc voltage and welding speed. The assembly dimension shall be accurate and the interface clearance shall be as small as possible. The gap is slightly larger and easy to burn through.
The key to welding stainless steel sheet is to control the linear energy on the welded joint, so as to minimize the heat input on the premise of completing the welding, so as to reduce the heat affected zone and avoid the above defects. The use current should not be too large, and try to shorten the heating time of the plate, so as to reduce the deformation of the plate.
