WELDING TORCH USED FOR LASER BEAM-PLASMA ARC HYBRID WELDING

摘要

A multifunctional laser beam-plasma arc hybrid welding torch (100), provided with a cavity (113) for laser beams to pass through; a constriction nozzle (120) is provided at the lower end of the cavity of the welding torch; a slit is formed, by a plasma electrode, above the constriction nozzle (120) of the welding torch (100); and a part of laser beams are incident on the slit edge of the electrode, and the other part of the laser beams pass through the slit to focus on a workpiece. The multifunctional laser beam-plasma arc hybrid welding torch eliminates the defects of laser beam welding and plasma welding and has higher hybrid heating source coupling efficiency.