At present, the cold welding machine industry divides cold welding machines into two categories:

Repair cold welding machine is called electric spark surfacing repair machine, also known as casting defect repair machine and metal defect repair cold welding machine. It is mainly aimed at casting defects and surface strengthening. The effect of steel, copper and aluminum is very good, without deformation, undercut, annealing, hard spots and secondary machining

Welding cold welding machines are called precision repair welding machines, also known as imitation laser welding machines, ultra laser welding machines, thin plate cold welding machines, stainless steel cold welding machines and mold repair machines. They are mainly used for customer mold repair and repair, shaft, casting, thin plate and other products for repair and welding. After welding, they will not deform, change color, undercut and weld joints will bear silver white