| 摘要 |
PROBLEM TO BE SOLVED: To firmly fix all superposed workpieces to be welded to each other in a mechanical manner without generating any dust or spatter. SOLUTION: In a welding method, a workpiece at the final position within a plurality of workpieces has one or more recesses or through holes, and other workpieces except the workpiece at the final position have one or more through holes, and are superposed on each other so that the through holes are concentric with the recess or the through hole of the workpiece at the final position. While a columnar welding member having the uniform diameter slightly larger than that of the recess or the through holes of the workpiece at the final position is pressed against the through hole of the workpiece at the initial position, a welding electrode runs the pulse-like current while applying the pressure to the columnar welding member and the workpiece, a contact part of the columnar welding member with the workpiece at the final position is subjected to the plastic flow and welded first, and the columnar welding member is further inserted in the recess or the through hole of the workpiece at the final position to execute the welding. COPYRIGHT: (C)2011,JPO&INPIT |
