Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (10): 140-145.

• Mechanical Engineering • Previous Articles     Next Articles

Effect of Pulse Parameters on Welding Behavior of Pulsed MIG Welding

Yao Ping  Huang Wen-chao  Xue Jia-xiang  Dong Fei   

  1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-10-25 Revised:2008-03-21 Online:2008-10-25 Published:2008-10-25
  • Contact: 姚屏（1978-），女，博士生，广东技术师范学院讲师，主要从事机电一体化及智能检测研究． E-mail:ypsunny@163．com
  • About author:姚屏（1978-），女，博士生，广东技术师范学院讲师，主要从事机电一体化及智能检测研究．
  • Supported by:

    广东省自然科学基金资助项目（07006479）

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Abstract:

An experiment platform for a self-developed the effects of pulse parameters on the droplet transfer of soft-switching inverter power supply was designed to reveal pulsed MIG welding. In the experiments, the peak current, the peak current duration and the base current duration were changed in accordance with the ＂one droplet per pulse＂ principle. The current and voltage signals in the welding process were collected by using a wavelet analyzer, and the images of droplet transfer were captured via a high-speed camera. Then, both the electric signals and the droplet transfer images were comprehensively analyzed. The results show that the pulse parameters directly affect the droplet transfer, especially the product of peak current and peak current duration, while the base current duration and the base current have slight effect on the droplet transfer.

Key words: pulsed MIG welding, pulse parameter, droplet transfer, wavelet analysis, high-speed photography