| 摘要 |
PROBLEM TO BE SOLVED: To propose a method for easily and surely joining metallic members by superposing the metallic members on each other. SOLUTION: An aluminum member 1 and a copper member 2 are arranged by being superposed on each other and the superposed portions are heated and pressed from a copper member 2 side and thereby the aluminum member 1 and the copper member 2 are joined. The heating and pressing are performed by moving the circumferential face of a disk-shaped joining tool 3 rotating in a circumferential direction while pushing the circumferential face of the joining tool 3 to the surface 2a of the copper member 2. Spiral recessed grooves 3c continuous with a slight inclination with respect to a rotation direction are formed on the circumferential face of the joining tool 3. As regards the width w<SB>1</SB>(mm) of flat parts 3d between the recessed grooves 3c and the width w<SB>2</SB>(mm) of the recessed grooves 3c, 1≤w1≤5, and 1≤w<SB>2</SB>≤3, and 0.67≤w<SB>1</SB>/w<SB>2</SB>≤5.00 are established. COPYRIGHT: (C)2008,JPO&INPIT |
