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Effects of pulse phase difference on metal transfer process and weld formation in the integrated circular triple-electrode GMAW

  • T. XiangEmail author
  • H. Li
  • Y. Gao
  • S. Y. Zhao
  • L. Y. Lou
  • H. Wang
ORIGINAL ARTICLE
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Abstract

The pulse synergic control on three arcs in the integrated circular triple-electrode GMAW was proposed to reduce arc interference. The research focused on the effects of pulse phase difference on metal transfer process and weld formation. In the aspect of metal transfer mode, it was found that one droplet per pulse accounted for a higher proportion at pulse phase difference of 120°, followed by pulse phase difference of 180°. However, complete one droplet per pulse hardly occurred at pulse phase difference of 0°, and short-circuiting transfer and one droplet multiple pulses became main transfer mode. In the aspect of weld formation, there were no distinct differences among weld widths and weld reinforcements under three pulse phase differences of 0°, 120°, and 180°. Nevertheless, the weld depths under three pulse phase differences successively varied from minimum to maximum. Moreover, the special cross-section appearance of “twin peaks” was formed at pulse phase difference of 120°. There were two main reasons for this phenomenon, i.e., arc force and droplet impact.

Keywords

Integrated circular triple-electrode GMAW Pulse phase difference Arcing mode Metal transfer mode Weld formation 

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Notes

Funding information

This work was supported by the National Natural Science Foundation of China (Grant no. 51475325) and the Applied Foundation and Advanced Technology Research Planning Project of Tianjin (Grant no. 14JCYBJC19100).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • T. Xiang
    • 1
    Email author
  • H. Li
    • 2
  • Y. Gao
    • 1
  • S. Y. Zhao
    • 3
  • L. Y. Lou
    • 1
  • H. Wang
    • 1
  1. 1.Tianjin key Laboratory of High Speed Cutting and Precision MachiningTianjin University of Technology and EducationTianjinChina
  2. 2.Tianjin Key Laboratory of Advanced Joining TechnologyTianjin UniversityTianjinChina
  3. 3.School of Gemology and Material TechnologyHebei Geo UniversityShijiazhuangChina

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