Research and Development > JFE TECHNICAL REPORT >JFE TECHNICAL REPORT No.20 March 2015 - Special Issue on “Steel Plates” and “Welding and Joining” > Development of Next Generation Resistance Spot Welding Technologies Improving the Weld Properties of Advanced High Strength Steel Sheets
No.20 March 2015 - Special Issue on “Steel Plates” and “Welding and Joining”
Development of Next Generation Resistance Spot Welding Technologies Improving the Weld Properties of Advanced High Strength Steel Sheets
TANIGUCHI Koichi OKITA Yasuaki IKEDA Rinsei
Abstract
The new technologies of resistance spot welding, which has been widely used for auto body production, are significant to realize the high collision safety of car body. Pulse SpotTM welding, utilizing the short-time high-current post-heating can improve the weld joint strength of high strength steel sheets. Intelligent SpotTM welding, varying the force and welding current during welding, enables to mitigate the limitation of the three sheets lap welding which is more frequently performed with increased application of high strength steels.
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