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Influences of deposited metal material parameters on weld pool geometry during shield metal arc welding

机译:屏蔽金属电弧焊过程中沉积金属材料参数对焊池几何形状的影响

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摘要

Weld pool geometry performs an important function in improving weld quality during welding. In the present work, the influences of deposited metal material parameters, including surface tension gradient, magnetic permittivity, and thermal expansion coefficient, on weld pool geometry were investigated. Fusion length (FL) and fusion ratio (FR) were proposed to analyze weld pool evolution quantitatively. Results reveal that surface tension gradient exerts the most significant effects on weld pool geometry. The effects of magnetic permittivity are less extensive than those of surface tension gradient, and thermal expansion coefficient exerts only slight influences on weld pool geometry. Considering the effects of surface tension gradient, magnetic permittivity, and thermal expansion coefficient, a classification method for deposited metals was proposed. Based on the characteristics of the weld pool geometry, heat and mass transfer processes in the weld pool, and application conditions, various types of deposited metals were analyzed. Comparison of the simulated and experimental results showed that the error ranges of FR and FL are 3.66-4.53% and 1.03-2.83%. respectively.
机译:焊池几何形状在改善焊接过程中的焊接质量方面起着重要作用。在目前的工作中,研究了熔敷金属材料参数(包括表面张力梯度,介电常数和热膨胀系数)对焊池几何形状的影响。提出了熔合长度(FL)和熔合比(FR)来定量分析熔池的演变。结果表明,表面张力梯度对焊缝几何形状影响最大。磁介电常数的影响不如表面张力梯度大,热膨胀系数对焊缝几何形状的影响很小。考虑到表面张力梯度,介电常数和热膨胀系数的影响,提出了一种沉积金属的分类方法。根据焊池几何形状的特征,焊池中的传热和传质过程以及应用条件,分析了各种类型的熔敷金属。仿真和实验结果比较表明,FR和FL的误差范围为3.66-4.53%和1.03-2.83%。分别。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2015年第11期|968-978|共11页
  • 作者单位

    School of Mechanical Engineering, University of Science & Technology Beijing, Beijing 100083, China,School of Chemical Engineering, University of Birmingham, Birmingham B152TT, United Kingdom,Beijing Engineering Research Center for Energy Saving and Environmental Protection, University of Science and Technology Beijing, Beijing 100083, China;

    School of Mechanical Engineering, University of Science & Technology Beijing, Beijing 100083, China;

    School of Mechanical Engineering, University of Science & Technology Beijing, Beijing 100083, China,Beijing Engineering Research Center for Energy Saving and Environmental Protection, University of Science and Technology Beijing, Beijing 100083, China;

    School of Mechanical Engineering, University of Science & Technology Beijing, Beijing 100083, China,Beijing Engineering Research Center for Energy Saving and Environmental Protection, University of Science and Technology Beijing, Beijing 100083, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Two-phase; Weld pool geometry; Thermal behavior; Material parameter; Fusion length; Fusion ratio;

    机译:两相焊池几何形状;热行为;材料参数;融合长度;融合率;

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