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CHEN Jie, WANG Yuhua, ZHU Zhenxin, XIAO Jun, ZHAN Xiaohong. Numerical simulation of multi-layer and multi-passes welding anti-deformation for thick plate Invar alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(4): 84-89. DOI: 10.12073/j.hjxb.2019400105
Citation: CHEN Jie, WANG Yuhua, ZHU Zhenxin, XIAO Jun, ZHAN Xiaohong. Numerical simulation of multi-layer and multi-passes welding anti-deformation for thick plate Invar alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(4): 84-89. DOI: 10.12073/j.hjxb.2019400105
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Numerical simulation of multi-layer and multi-passes welding anti-deformation for thick plate Invar alloy

  • 1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

  • 2. Institute of Aeronautical Manufacturing Technology, Shanghai Aircraft Manufacturing Co., Ltd, Shanghai 200436, China;

  • 3. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China

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  • Received Date: December 18, 2017
    Graphical Abstract
    • Abstract
  • Finite element simulation was applied in multi-layer and multi-passes MIG welding of 19.05 mm thick Invar alloy to simulate the non-deformable models and the models with different anti-deformation angles. Then the Invar alloy multi-layer and multi-passes MIG welding experiments were carried out with the anti-deformation angle, which was designed according to the simulation results, besides, the deformation of the post welding specimen was analyzed. The result showed that the 2 degree anti-deformation angle could effectively control the post welding angular deformation of the four-layer and ten-passes MIG welding for 100 mm × 100 mm × 19.05 mm Invar alloy. The post-weld residual warpage height is −0.11 mm and the post-weld residual angular deformation is −0.12 degree. The error between the results and the simulation results was less than 8%. This conclusion proved that the finite element simulation technology had prediction and guidance for experiments.
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    • References (23)
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