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WANG Bo, YANG Fan, LI Lianbo, ZHANG Hongtao, DENG Qingwen. Analysis of weld forming in magnetically controlled Plasma-FCAW underwater hybrid welding process[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(4): 74-80. DOI: 10.12073/j.hjxb.20211104005
Citation: WANG Bo, YANG Fan, LI Lianbo, ZHANG Hongtao, DENG Qingwen. Analysis of weld forming in magnetically controlled Plasma-FCAW underwater hybrid welding process[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(4): 74-80. DOI: 10.12073/j.hjxb.20211104005
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Analysis of weld forming in magnetically controlled Plasma-FCAW underwater hybrid welding process

  • 1.

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

  • 2.

    Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, China

  • 3.

    Institute for Ship- welding Technology, Shandong Institute of Shipbuilding Technology, Weihai, 264209, China

  • 4.

    Offshore Oil Engineering Co.,Ltd., Tianjin, 300451, China

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  • Received Date: November 03, 2021
  • Available Online: April 20, 2022
    Graphical Abstract
    • Abstract
  • Magnetically controlled plasma-FCAW hybrid welding technology is proposed as a new efficient underwater welding method. The advantages of the two independent welding processes are complementary through the unique welding torch structure design. An external magnetic field was designed by regulating the coupling degree between two arcs for the problem of arc repulsion caused by different polarity of power supply in hybrid welding process to solve. The influence of main process parameters on the weld forming and section geometry characteristics of Q355B steel was studied. The results show that the external magnetic field can effectively improve the stability of the hybrid welding process and weld forming. FCAW voltage greatly influences the stability of the underwater hybrid welding process. Plasma welding current and FCAW voltage greatly influence weld penetration, and the plasma current has an approximately linear relationship with weld penetration. Compared with the underwater FCAW process, the welding depth of the hybrid welding process is increased by more than 40%, with higher welding efficiency and welding stability.
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    • References (12)
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