Patent ID: 11958123

Abstract:
A resistance spot welding method includes: performing test welding; and performing actual welding after the test welding, wherein in subsequent current passage in the test welding, current passage is performed by constant current control under a condition: 0.5 δ Vtp/Vtm δ 2.0 when tc<800 ms; 0.5−0.3·(tc−800)/800 δ Vtp/Vtm δ 2.0−0.5·(tc−800)/800 when 800 ms δ tc<1600 ms; and 0.2 δ Vtp/Vtm δ 1.5 when tc ε 1600 ms, and wherein in main current passage in the actual welding, adaptive control welding is performed, and in subsequent current passage in the actual welding, current passage is performed by constant current control under a condition: 0.8·Itp δ Imp δ 1.2·Itp.