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SHEN Jie, LIN Haolei, ZHANG Yansong, CHEN Guanlong. Control method for nugget size of resistance spot welding of three-layer steels with different thickness and strength[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (1): 33-36.
Citation: SHEN Jie, LIN Haolei, ZHANG Yansong, CHEN Guanlong. Control method for nugget size of resistance spot welding of three-layer steels with different thickness and strength[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (1): 33-36.
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Control method for nugget size of resistance spot welding of three-layer steels with different thickness and strength

  • Shanghai Key Laboratory of Digital Autobody Engineering, Shanghai Jiaotong University, Shanghai 200240, China

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  • Received Date: October 21, 2010
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  • In order to study the nugget formation during resistance spot welding procers of three-layer steels with different strength and thickness,asymmetric electrodes were utilized to improve the nugget size and weldability.Finite element analysis was used to investigate the current density,temperature change and nugget sizes of the thinner side.Experiments were also carried out to analyze nuggets sizes at different welding time.The welding lobes under symmetric and asymmetric electrodes were established.The results showed that the current density and temperature field of the thinner side could be changed significantly as asymmetric electrodes were applied,which could facilitate the formation of nugget and widen the weldability of three-layer sheets.
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