Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (5): 7-12.

• Mechanical Engineering • Previous Articles     Next Articles

Regulation of Sinusoidal Swing Parameters in Aluminum Welding Using Sinusoidal Pulsed MIG Welding

Wei Zhong-hua  Long Peng  Xue Jia-xiang   

  1. School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-12-21 Revised:2012-03-19 Online:2012-05-25 Published:2012-03-31
  • Contact: 魏仲华(1964-) ，男，博士生，高级工程师，主要从事数字化电源以及铝合金脉冲焊接机理研究． E-mail:weinetlw@163.com
  • About author:魏仲华(1964-) ，男，博士生，高级工程师，主要从事数字化电源以及铝合金脉冲焊接机理研究．
  • Supported by:

    国家自然科学基金资助项目( 50875088) ; 广东省科技计划项目( 2010B010700001) ; 广东省企业特派员工作站项目( 2010B090500008) ; 黄埔区科技攻关项目( 1021)

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Abstract:

In this paper,on the basis of the eternal periodicity and the infinite derivative continuity of sinusoidal waveform and by considering the fact that lower welding energy is required in welding light material aluminum alloy,simplified formulas were deduced to describe the sinusoidal swing parameters in the aluminum welding with sinusoid-modulated pulsed MIG welding. Then,some experiments were carried out to validate the correctness and practicality of the formulas,and ideal fish-scale welding seams are easily and stably formed in the welding process. Experimental results indicate, when κ is in the duration of [15. 0%,23. 1%],the sinusoid-modulated pulsed MIG welding is of wide parameter matching range,low parameter requirement,large stable working region and low sensitivity to external interferences. Thus,it is concluded that the proposed formulas provide theory and test foundation for the optimization and matching of parameters in the aluminum welding with pulsed MIG welding.

Key words: pulsed welding, sinusoidal modulation, sinusoidal swing, stability