| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding method and its device for a multi-layer excellent in both weld quality and strength. SOLUTION: The method and its device are as follows; that is, in the welding method by which a square groove is subjected to multi-layer welding, vertical welding is performed from an initial layer to plural layers. After that, one layer or plural layers are formed by the plural passes of horizontal welding. |
