| 摘要 |
PURPOSE:To eliminate the dislocation of the relative position of a welding member each other by welding both metal plates after locating the 2nd metal plate in the external shape size almost equivalent to the hollow part having plural foot parts on the outer peripheral part to the inside of the hollow part formed on the 1st metal plate. CONSTITUTION:A hollow part 12 is formed on the welding place of the 1st metal plate 5 and the external shape size of the 2nd metal plate 6 is taken in the size nearly equivalent to the hollow part 12 and plural foot parts 11 are formed on the outer periphery. An ultrasonic vibration is given after impressing a pressure by abutting a tool 4 on the upper face of the 2nd metal plate 6 by locating the 2nd metal plate 6 inside the hollow part 12 of the 1st metal plate 5 on the above of an anvil 9. In this way a friction heat is generated on the abutting face of both metal plates 6 and 5 and both metal plates 5 and 6 are subjected to a solid phase junction by the atomic combination or the diffused junction among stoms. In this case the dislocation of the relative position can be restrained since the position of the foot part 11 is regulated inside the hollow part 12.
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