600MPa급과 1200MPa급 고장력강의 적응 제어형 저항 점 용접에 관한 연구

A Study on the Adaptive Resistance Spot Welding for High Strength Steel of 600Mpa and 1200Mpa Grade

The resistance spot weld is among the most common automotive weld method, now a constant current type is the most common used types. A constant current type have a weak point which can not deal with a defect occurrence by external factors, and recently the adaptive resistance spot weld have been applied around the advanced automotive company. This technology can maintain a stable weld quality through a suitable control the current and weld time with weld environment. In this research, the adaptive resistance spot weld is applied to high strength steels, and its application possibility and weld characteristics are presented.