| Numerical analysis of temperature profile and weld dimensions in laser ＋ GMAW hybrid welding of aluminum alloy T-joint |
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| 引用本文： | 胥国祥,武传松,秦国梁,王旭友.Numerical analysis of temperature profile and weld dimensions in laser ＋ GMAW hybrid welding of aluminum alloy T-joint[J].中国焊接,2013(3):51-55. |
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| 作者姓名： | 胥国祥 武传松 秦国梁 王旭友 |
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| 基金项目： | Acknowledgement This work was supported by Sino-Russia Cooperation Research Project of China under Grant No. 2009DFRS0170, National Natural Science Foundation of China under Grant No. 51105182, Jiangsu College Natural Foundation under Grant No. 11KJB460004 and A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions. |
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| 摘 要： | The temperature fields in the transient state and weld dimensions in laser ＋ gas metal arc welding （GMAW） hybrid welding of aluminum alloy T-joint for different welding conditions were calculated using the developed heat source model, and the effect of welding speed on them was analyzed. The results show that the temperature field for the first weld pass only shows the feature of GMAW and the one for the second weld pass has the characteristics of both laser welding and GMAW. Welding speed can affect greatly weld dimensions and temperature distribution. When welding speed reaches 3.5 m/min, the fusion zones of two weld passes are separated and the maximum peak temperature of thermal cycle on the workpiece surface decreases largely.
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| 关 键 词： | 混合气体保护焊 焊缝尺寸 激光焊接 T型接头 温度分布 复合焊接 铝合金 数值分析 |
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