| 摘要 |
PROBLEM TO BE SOLVED: To provide a TIG welding method and equipment therefor where, when carrying out TIG welding, the radiation shape of a welding arc 8 is controlled; thus, even when there is a gap between the parts 10 to be joined, molten metal 9 can be continuously joined to each other. SOLUTION: The radiation shape of a welding arc 8 generated between an electrode 4 in a welding torch 3 connected with the negative pole of a TIG welding machine 2 and the object 5 to be joined connected with the positive pole is deviated by Lorentz force of a fixed magnetic field generated by a permanent magnet 7 arranged at a position parallel to the welding arc 8 so as to obtain a desired oval radiation face shape in the welding line direction of the part 10 to be joined; thus heat input in the welding line direction is increased; the momentum of the deviated welding arc 8 is applied to the generated molten metal in the welding line direction, and action force of pressing the molten metal in the welding line direction is generated so as to continuously join the molten metals 9 of the adjacent parts 10 to be joined with each other while having two gaps. COPYRIGHT: (C)2008,JPO&INPIT |
