| 摘要 |
This indirect spot welding welds members comprising at least two overlapping steel plates having a ferrite phase as a main phase by pressing and applying pressure to a welding electrode (23) against a steel plate (21) from one surface side, and attaching a power supply electrode (24) to the steel plate (22) on the other surface side away from the welding electrode (23), and passing electricity between the welding electrode (23) and the power supply electrode (24). Magnetic rigid bodies (26-1, 26-2) are placed in contact with the area in the vicinity of the welding electrode (23) from the surface side that the welding electrode (23) is pressed against, and a weld zone having sufficiently satisfactory strength is obtained regardless of the rigidity of the members by fixing the overlapping region of the area in the vicinity of the welding electrode (23) by means of the magnetic force generated by the rigid bodies (26-1, 26-2). |
