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HUANG Ruisheng, ZOU Jipeng, GONG Jianfeng, YANG Yicheng, LIANG Xiaomei. Dynamic behavior of laser scanning welding pool and plasma[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2020, 41(3): 11-16. DOI: 10.12073/j.hjxb.20191016004
Citation: HUANG Ruisheng, ZOU Jipeng, GONG Jianfeng, YANG Yicheng, LIANG Xiaomei. Dynamic behavior of laser scanning welding pool and plasma[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2020, 41(3): 11-16. DOI: 10.12073/j.hjxb.20191016004
shu

Dynamic behavior of laser scanning welding pool and plasma

  • 1.

    Harbin Welding Institute Limited Company, Harbin, 150028, China

  • 2.

    State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001,China

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  • Received Date: October 15, 2019
  • Available Online: July 12, 2020
    Graphical Abstract
    • Abstract
  • With the material of aluminum alloy 5A06, the weld pool and plasma plume dynamic behavior during laser scanning welding were photographed by using high-speed photography. The character of fluidity for molten pool surface and of plasma plume vibration were analyzed under conventional single laser beam and laser scanning welding.The research results showed that compared with Single laser beam, the oscillating laser beam can greatly enhance the stability of plasma, prolong the cycle, increase the direction of the molten pool flow at the same time, and improve the stability. On the whole welding molten pool surface backflow phenomenon did not occur. Dynamic pressure resulting from molten pool flow reduced the impact of the keyhole. The keyhole stability is greatly improved.
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    • References (13)
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