铝合金(AL6063-AL6063)激光焊接应用试验与分析

Research and Analysis on Laser Welding Application of Aluminum Alloy (AL6063-AL6063)

  • 摘要: 铝合金传统焊接在机械制造使用领域存在变形量较大、生产效率较低等不利因素,该因素会造成整体机械结构强度和机械刚度降低等问题。针对此问题,该文通过对铝合金(AL6063-AL6063)的新型不同激光焊接方案:激光对接焊接、激光穿透焊接、激光填丝焊接(Butt-Joint和V-Joint)的研究与分析,以及对激光焊接接头的焊缝质量金相分析,得出了一种较佳的无焊接微裂纹和气孔群的激光焊接技术方案,并通过对该激光焊接技术方案的数值分析与疲劳寿命数值模拟分析,证实了该技术方案适用于机械制造领域的铝合金(AL6063-AL6063)焊接。最后经过焊接样件的疲劳寿命试验验证,从一定程度上表明,该激光焊接技术方案具有比较高的稳定性、可行性和可靠性,其结果对铝合金(AL6063-AL6063)激光焊接在机械制造轻量化设计领域的广泛推广及应用具有重要的参考价值。

     

    Abstract: In the traditional welding of aluminum alloy, there are large deformation and low production efficiency, which will cause the reduction of overall mechanical structural strength and mechanical stiffness. In view of these problems, through the research and analysis on new different laser welding schemes of aluminum alloy (AL6063-AL6063): laser butt welding, laser penetration welding, laser wire filling welding (Butt-Joint and V-Joint), and metallographic analysis of the weld quality of laser welded joints, a better laser welding technology scheme without welding microcracks and porosity groups is obtained in this article. Through the numerical analysis and fatigue life numerical simulation analysis of the laser welding technology scheme, it is confirmed that the laser welding technology scheme is suitable for aluminum alloy (AL6063-AL6063) welding in the field of machinery manufacturing. Finally, it is proven through the fatigue life test of the welding sample that the laser welding technology has relatively high stability, feasibility and reliability to a certain extent, and the results have important reference value for the wide promotion and application of aluminum alloy (AL6063-AL6063) laser welding in the field of lightweight design of machinery manufacturing.

     

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