| 摘要 |
PROBLEM TO BE SOLVED: To perform superior butt welding on workpieces to be joined, without causing a misjoined part so-called kissing bond in the weld zone of the workpieces, without causing root crack, with less tendency of fatigue fracture generation, and at a low cost and with excellent productivity. SOLUTION: In friction stir welding, a metallic foil 21 is clamped between the abutting part 33 including its periphery of workpieces 31, 32 and a backing 10, with a solid lubricating layer 22 interposed between the metallic foil 21 and the backing 10. Furthermore, a supporting body 23 is for facilitating support of the solid lubricant layer 22, but is not necessarily required. COPYRIGHT: (C)2009,JPO&INPIT |
