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《Electric Welding Machine》 2005-02
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Development of intelligent resistance spot welding machine with waveform control

LI Tong,LIU Ming yu,WANG Xiao chuanCollege of Mechanical Engineering,Chongqing University,Chongqing 400044,China  
The resistance spot welding characteristics for miniature workpiece and the problem often appeared in spot welding equipment and technics were analyzed in the paper.It puts forward definitely that the di/dt of current waveform positive going edge in different period is the third important technics parameter of resistance spot welding technics parameter for miniature workpiece besides current peak value IM and the peak value duration tM.The new spot welding technics of arbitrary waveform control is an effective approach to solve the contradiction of gain high strength joint but without splash.The fine effect was gained to improve welding quality of a certain spaceflight igniter by the intelligent spot welding machine with waveform control.
【Fund】: 航天工业特种工艺技术预先研究课题资助项目(42.2/910692-02)
【CateGory Index】: TG438.2
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