WELDING EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide low-cost welding equipment in which the tensile residual stress of the surface of a weld zone is efficiently converted into compression. SOLUTION: The welding equipment comprises: a torch 1 for Tungsten Inert Gas (TIG) welding supported on a carriage and connectable to a power source; an injection nozzle 21 supported on the carriage and supplying water to welded marks by means of the torch 1 for TIG welding; a suction nozzle 20 supported on the carriage and having a suction port at the outer periphery of the injection nozzle 21; a cooling medium supply hose 25 supplying water to the injection nozzle 21 by connecting the injection nozzle 21 to a water source; a suction pump providing suction force to the suction nozzle 20; and a container receiving the water sucked by means of the suction nozzle 20 through a cooling medium recovery hose 26 connected to the suction nozzle 20. COPYRIGHT: (C)2004,JPO