WELDING TORCH OF PLURAL ELECTRODES

摘要

PROBLEM TO BE SOLVED: To provide a welding torch having plural electrodes and prevented from a bead trouble at the welding start and end times.SOLUTION: A welding torch comprises: substantially tabular insulating members 1a and 1b extending in parallel with the central axis of a torch; first and second tip substrates 2a and 2b each having an electrode storage space and a nozzle leading to the storage space and opposed through the insulating members; first and second non-consumable electrodes 12a and 12b approaching the electrode arrangement spaces of the individual tip substrates; and a frame body 18 made of an insulator for supporting the first and second tip substrates integrally with the insulating members across the insulating members. Screws 24 and 25 are screwed through an insulating block into the tip substrates thereby to fix the tip substrates in the insulating block. Alternatively, the frame body 18 is removably fixed to the leading end of a torch external cylinder 20 by fasteners 22a and 22b.