| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding method for achieving welding while securing airtightness, in which removal of spatters after welding is not required and also generation of strain in a weld zone is suppressed.SOLUTION: A container is manufactured by welding using CMT (Cold Metal Transfer) welding. First, wasted welding is implemented by starting CMT welding from a welding starting point 7a which is a position different from a weld zone to be welded, to the weld zone to be welded. After the weld zone to be welded is reached, regular welding is performed by CMT welding on a welding route 6 which is the weld zone to be continuously welded. With the starting point of the regular welding reached, overlapping welding (overlapped weld zone 9) is further continuously performed in the vicinity of the starting point of the regular welding. Thereafter, wasted welding is carried out to a position different from the weld zone to be welded, the position being a welding completion point 8a. |
