| 摘要 |
PROBLEM TO BE SOLVED: To provide a torch for TIG welding, to which a rod electrode for TIG welding, which has diameter dimensions in a comparatively wide range, can be used without changing a collet chuck. SOLUTION: In the case of moving a second collet chuck 59 on the backward side, after the holding of an electrode 1 is released by the second collet chuck 59, the second collet chuck 59 engages with a second collet chuck holder 54, the second collet chuck holder 54 is moved on the backward side and the engaging state of a first collet chuck 49 and a first collet chuck holder 31 is released. In the case of moving the second collet chuck 59 on the forward side, after the second collet chuck 59 and the second collet chuck holder 54 are engaged each other, the first collet chuck 49 engages with the first collet chuck holder 31, and the electrode 1 is held by the first collet chuck 31, and at the same time the electrode 1 is held by the second collet chuck 59.
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