| 摘要 |
PROBLEM TO BE SOLVED: To consistently perform the MIG welding by using gaseous argon with less mixed gas such as gaseous oxygen. SOLUTION: Welding cleaning is performed in a predetermined area by performing the arc discharge on a surface of a base material. Then, the MIG welding is performed on the predetermined area with argon being a shield gas. Any other component than argon is not positively added to the shield gas. COPYRIGHT: (C)2007,JPO&INPIT
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