| 摘要 |
PROBLEM TO BE SOLVED: To enable a cover member to be smoothly friction stir welded to a tube member without thickening the cover member. SOLUTION: In the method for plugging a tube end, a cover member 11 is abutted on one end of a tube member 10 and the abutted part S is friction-stir welded by a rotary tool 6. The cover member 11 is formed like a cup and the tubular edge 14 is abutted on one end of the tube member 10. Then, a pressure receiving part 16 at one end of a mandrel 12 inserted into the tube member 10 is fitted to the tubular edge 14. The inner diameter of the tubular edge 14 is made slightly smaller than that of the tube member 11 to prevent the tube member 10 from being damaged on the inner face at the time of attaching/detaching of the mandrel 12. In addition, pressurizing force of the rotary tool 6 is received by the pressure receiving part 16 of the mandrel 12 to prevent deformation of abutted end part between the tube member 10 and the cover member. COPYRIGHT: (C)2006,JPO&NCIPI |
