| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a joining method in which any burr is hardly generated on a decorative surface side of a metal sheet when joining a pair of metal sheets by using a bobbin tool. <P>SOLUTION: The joining method includes a butting step of butting end faces of plate-like end members 102 to each other, and a joining step of executing the friction stir welding of the end faces to each other, by the arrangement of allowing a first shoulder 11 and each surface (decorative surface) Sa of the plate-like end members 102 to be opposite to a butting part N formed by butting the end faces to each other, and moving a pin 13 of a bobbin tool 5 which is turned to the right when viewed from a slide shaft 4 side. The distance between the shoulders is set to be equal to or less than the thickness of the plate-like end members 102. A spiral groove 14 of the right-hand thread is cut in an outer circumferential surface of the pin 13 over the entire length of the pin 13 in the axial direction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
