| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas shielded arc welding method where, when thick steel plates are subjected to butt welding at a narrow bevel (e.g., at a bevel angle of≤50°), a stable penetration can be obtained, the high temperature cracks of the first layer are prevented, and also, the appearance of a weld bead is satisfactory. SOLUTION: In the gas shielded arc welding method where welding is performed while oscillating a welding torch, gas shielded arc welding is performed at a bevel angle of≤50°while oscillating for 30 to 150 times per min in such a manner that the components parallel to the welding wire of the oscillating lie in the range of 10 to 45 mm. COPYRIGHT: (C)2008,JPO&INPIT |
