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LIN Fang, WEI Zhonghua, CHEN Xiaofeng, CUI Longbin, XUE Jiaxiang. Method of pulsed-MIG welding arc voltage control based on sub-spraying transfer[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (7): 17-20.
Citation: LIN Fang, WEI Zhonghua, CHEN Xiaofeng, CUI Longbin, XUE Jiaxiang. Method of pulsed-MIG welding arc voltage control based on sub-spraying transfer[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (7): 17-20.
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Method of pulsed-MIG welding arc voltage control based on sub-spraying transfer

  • 1.

    Department of Electromechanical Technology, Jiangmen Polytechnic, Jiangmen 529000, China

  • 2.

    School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou 510640, China

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  • Received Date: March 01, 2011
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  • Constant current control and constant wire feed were both used in the pulsed metal argon arc welding power source.The method of pulsed-MIG welding arc voltage control based on sub-spraying transfer was put forward.Its principle is as follows:the average arc voltage of each period of pulse was measured.If the average arc voltage was within the sub-spraying transfer range, the arc length would be adjusted only by self-adjusting of the arc.But if the average arc voltage went beyond the sub-spraying transfer range, the background current time changed so that the average current in each pulse period changed, so did the burn-off rate in the welding conditions above.It was found that the arc adjustment and anti-disturbance ability were improved.The results of the tests indicated this method obviously improved the welding dynamic characteristics and efficiently restrained disturbances.In addition, well-formed welding seams were acquired.
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