| 摘要 |
PROBLEM TO BE SOLVED: To form a joint having good state between both members with a friction stirring welding, even in the case of being the large gap between abutting parts of two members. SOLUTION: After cutting a groove 41 provided with a fixed cross sectional shape with a cutting tool 60 along the abutting part of two members 10, 20, a supplementary material 30 having almost the same cross sectional shape is embedded into the groove to substantially remove the gap between the abutting part. Thereafter, three parts of the projecting parts 12, 22 and the supplementary material 30, are tack-welded and successively, the members 10, 20 and the supplemental material 30 are wholly and mutually welded with the friction stirring by using a rotating tool 81. COPYRIGHT: (C)2004,JPO
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