| 摘要 |
PROBLEM TO BE SOLVED: To propose an indirect spot welding method capable of stably obtaining optimal Go stone-like nuggets when at least two overlapped metal sheets are made of steel and the total thickness thereof is 1.8 mm or less.SOLUTION: In an indirect spot welding method, the welding time is divided into two time zones tand tfrom the start of welding and the length of each time zone is controlled respectively, and electrode pressing force Fand Fand current values Cand Care controlled in the time zones tand t, respectively. In the first time zone t, the electrode pressing force F(N) and current value C(kA) are applied, and in the next time zone t, the electrode pressing force F(N) and current value C(kA) are applied. |
