TORCH FOR GAS SHIELDED ARC WELDING MACHINE, AND GAS SHIELDED ARC WELDING METHOD

摘要

PROBLEM TO BE SOLVED: To prolong the continuous operating time of a welding machine by performing cooling of a welding torch and a nozzle with spouting gas cooled at ≤ 0°C, and preventing the sticking of spattering easily stuck caused by rising of the temperature.;SOLUTION: In the torch for gas shielded welding machine performing arc welding under shielded gas atmosphere with a welding wire continuously supplied, a welding chip for supporting the welding wire, the nozzle for supplying the shielded gas to the welding part, a low temperature air generator for generating the cooling air by cooling the compressed air having 0.4-0.6 MPa and ≥ 70 l/min and a cooling air supplying passage for supplying the cooling air generated with the low temperature air generator into the distal end part of the welding tip, are peculiarly provided.;COPYRIGHT: (C)2004,JPO&NCIPI