Laser welding machine for the mold and metal parts of the wear and tear, scratches, pinholes, cracks, deformation deformation, hardness reduction, trachoma and other defects in the deposition, sealing, fill and other repair function. After repair, the matrix is not deformed, does not anneal, does not undergone and no residual stress, does not change its metal organization state, high repair precision, coating thickness from a few microns to a few millimeters, just polished. High power argon protection for long periods of time. Laser beam energy adjustable, adjustable speed, can be a variety of welding processing. Laser welding a high degree of automation, you can use the computer to control, welding speed, high efficiency, can be easily carried out any complex shape of the welding.