| 摘要 |
PROBLEM TO BE SOLVED: To reduce the volume of a recess for removing defects as small as possible and make the shape of the recess cylindrical, to improve machinability in forming the recess and reduce the welding volume, heat input during welding, and thermal deformation, and further to enable filler metal to be supplied to the center or in the vicinity of the center of a molten pool for improvement of weldability.SOLUTION: In a torch for TIG welding, an electrode 5 and the filler metal 6 are arranged in parallel with the center line of the torch, and are rotatably supported integrally around the center line of the torch, at least the electrode is eccentrically situated with respect to the center line, and the lower end of the electrode is cut obliquely so that the tip end is made to face a wall face. |
