• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2025, Vol. 61 ›› Issue (6): 112-120.doi: 10.3901/JME.2025.06.112

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Effect of Size and Number of Induction Heating during Welding Process on Buckling Distortion Induced by Welding

FU Ling1, YI Bin1,2, YIN Li1, XUE Dingqi1, REN Huili1, WANG Jiangchao2   

  1. 1. National Key Laboratory of Hoisting Machinery Key Technology, Changsha 410013;
    2. School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074
  • Received:2024-08-12 Revised:2024-12-18 Published:2025-04-14

Abstract: In order to solve the problem that buckling distortion induced by welding of thin plates structures was difficult to be perfectly corrected after welding, induction heating during welding process was proposed to control it and the effect of processing parameters was investigated. Conventional welding (CW) and induction heating during welding process were performed on butt welded joints with thin plates. The temperature histories in the additional induction heating region were measured by K-type thermocouple, while the deformation profile was obtained by a coordinate measuring machine after cooling down. The butt welded joints showed saddle shape, but the distortion under induction heating during welding process was less than that of CW. Then, a solid elements model of butt welded joint was established, which was used to conduct thermal elastic plastic (TEP) FE analysis considering material nonlinearity and geometric nonlinearity. The computed temperature histories and welding distortions were in good agreement with the measured results of CW and induction heating during welding process, so that the accuracy of TEP FE analysis was validated. Finally, the influence of the size and number for additional induction heating region on control effect of buckling distortion induced by welding was studied with the validated TEP FE analysis. The results showed that better control effect can be obtained by increasing the size and number of additional induction heating region. The optimized process parameters of induction heating during welding process can reduced out-of-plane displacement by more than 90%. The thermal stretching action formed by induction heating during welding process significantly decreased residual compressive stress in base material region and improved the stability of welded structures, so as to control or even eliminate buckling distortion induced by welding.

Key words: buckling distortion induced by welding, induction heating, processing parameters, FE analysis, residual stresses

CLC Number: