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激光深熔焊接抛物面小孔模型 被引量:4

Numerical simulation and experiment study on keyhole in laser penetration welding
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摘要 激光深熔焊接由于其无与伦比的优良特性成为高功率激光工业应用的主要方面。在假设小孔为旋转抛物面结构的基础上,通过分析小孔内的压力平衡、蒸发压力、表面张力、能量平衡、小孔壁的温度以及小孔底部的能量平衡问题,采用数值迭代方法求解出小孔的深度和宽度。将焊接中的理论分析由假设小孔形状为圆柱面只能适合低速焊接推广到中高速焊接。计算了在不同焊接速度下小孔的深度、宽度以及与焊接试验的焊缝深度,与焊接试验中得到的结果进行了比较,理论计算结果也比较吻合实际焊接情况。 Energy balance,pressure balance and temperature of keyhole were analyzed based on the assumption that the keyhole is a Paraboloid of revolution.The keyhole depth and width were calculated by numerical iterative method.The calculated results accord with those of the actual experiments.Then the keyhole principle fitted for low speed laser welding on the assumption that the keyhole with cylinder was developed to a high speed.
出处 《焊接学报》 EI CAS CSCD 北大核心 2006年第2期1-5,共5页 Transactions of The China Welding Institution
基金 国家自然科学基金资助项目(60407009) 北京市自然科学基金资助项目(4042007) 科技部国际合作项目(2002AADF3101) 北京市科技新星计划项目
关键词 激光深熔焊接 小孔 熔池 旋转抛物面 数学模型 laser deep penetration welding keyhole welding pool revolution paraboloid mathernatical model
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参考文献11

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同被引文献39

  • 1张屹,李力钧,金湘中,洪蕾.激光深熔焊接小孔效应的传热性研究[J].中国激光,2004,31(12):1538-1542. 被引量:12
  • 2刘黎明,迟鸣声,宋刚,王继锋.镁合金激光-TIG复合热源焊接热源模型的建立及其数值模拟[J].机械工程学报,2006,42(2):82-86. 被引量:22
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