| 摘要 |
PROBLEM TO BE SOLVED: To provide a bonding technique to easily bond two overlapped objects to be bonded by a friction welding with a high quality. SOLUTION: The bonding method to solve the problem comprises (a) a process to overlap at least a part of a flat surface of the first object 1 to be bonded and the second object 2 to be bonded, (b) a process to arrange a revolving tool 3, having a bump for a friction at the edge, to a prescribed position and the bump at the edge is pressed to the outer surface of the first overlapped object to be bonded and rotate the revolving tool at the pressed position for the friction of the overlapped part to a ring-like, (c) a process to insert the bump for the friction at the edge of the revolving tool into the first object to be bonded in order to make at least the first object to be bonded intenerating or melting to the ring-like from the outer surface to the overlapped surface, and (d) a process to weld the first and the second object to be bonded in a ring-like state along with the intenerated or melted part.
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