Patent ID: 8866036

Claim:
A welding torch comprising: a non-consumable electrode that generates an arc toward a material to be welded; a collet that supports the non-consumable electrode which is being inserted into the inside of the collet; a collet body that internally holds the collet in a state where the non-consumable electrode protrudes from a tip side of the collet body; a torch body that mounts the collet body and comprises a power supply portion that supplies electric power to the non-consumable electrode via the collet body and the collet, and a first flow channel that supplies a first shielding gas; an inner nozzle that is mounted to the collet body surrounding the periphery of the non-consumable electrode and discharges the first shielding gas, the inner nozzle being mounted on an outer circumferential portion of the collet body; an attachment that is removably mounted to the torch body in a state where the inner nozzle is inserted into an inside of the attachment, and comprises a second flow channel that supplies a second shielding gas; and an outer nozzle that is mounted to the attachment surrounding the periphery of the inner nozzle and discharges the second shielding gas, wherein the attachment is removably mounted by being interposed between the torch body and the inner nozzle; and the collet body has a flow channel through which the first shielding gas supplied from the torch body flows.