| 摘要 |
This welding method comprises welding treatment in which a base metal is welded, and heat treatment in which after the temperature of a heat-affected zone of a welded part welded by the welding treatment falls below a tempering temperature range, the heat-affected zone is heated to the tempering temperature range by laser irradiation at the stage at which the welded part is not subjected to welding other than the welding treatment. |
