• Chinese Journal of Lasers
  • Vol. 29, Issue s1, 558 (2002)
ZHANG Yong-qiang1, WANG Cheng1, PENG Yun1, CHEN Wu-zhu1, ZHANG Xu-dong1, and TIAN Zhi-ling2
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
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    ZHANG Yong-qiang, WANG Cheng, PENG Yun, CHEN Wu-zhu, ZHANG Xu-dong, TIAN Zhi-ling. Heat Source Model and Thermal Field Calculation of Laser Deep Penetration Welding[J]. Chinese Journal of Lasers, 2002, 29(s1): 558 Copy Citation Text show less

    Abstract

    Thermal cycle greatly influences the microstructures and mechanical properties of laser welded joint. Taking account of the heating effect of plasma on the workpiece and the absorption of heat in the keyhole, a mathematical model, consisted of a point heat source and a line heat source which weakens with the depth, is put forward, and a delamination method is applied for the analysis. The model is used to calculate the thermal field of laser welding of mild steel. The results are compared with that of experiment. The calculation results coincide well with the experiment results.
    ZHANG Yong-qiang, WANG Cheng, PENG Yun, CHEN Wu-zhu, ZHANG Xu-dong, TIAN Zhi-ling. Heat Source Model and Thermal Field Calculation of Laser Deep Penetration Welding[J]. Chinese Journal of Lasers, 2002, 29(s1): 558
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