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Analysis of weld pool dynamic during stationary laser–MIG hybrid welding

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Abstract

A mathematical model was established to simulate the weld pool development and dynamic process in stationary laser–metal inert gas (MIG) hybrid welding. Surface tension and buoyancy were considered to calculate liquid metal flow pattern; moreover, typical phenomena of MIG welding such as filler droplets impinging weld pool, electromagnetic force in the weld pool, and typical phenomena of laser beam welding such as recoil pressure, inverse Bremsstrahlung absorption, and Fresnel absorption were all considered in the model. The laser beam and arc couple effect was introduced into this model by the plasma width during hybrid welding. Transient weld pool shape and complicated liquid metal velocity distribution from two kinds of weld pool to a unified weld pool were calculated. Furthermore, the simulated weld bead geometries were in good agreement with experimental measurement.

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Authors and Affiliations

  1. Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai, 200240, People’s Republic of China

    Zhiguo Gao, Yixiong Wu & Jian Huang

  2. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China

    Zhiguo Gao, Yixiong Wu & Jian Huang

Authors
  1. Zhiguo Gao
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  2. Yixiong Wu
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  3. Jian Huang
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Correspondence to Zhiguo Gao.

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Gao, Z., Wu, Y. & Huang, J. Analysis of weld pool dynamic during stationary laser–MIG hybrid welding. Int J Adv Manuf Technol 44, 870–879 (2009). https://doi.org/10.1007/s00170-008-1896-4

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  • DOI: https://doi.org/10.1007/s00170-008-1896-4

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