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首页> 外文期刊>DVS-Berichte >Investigation on the influence of heat source geometric parameters and arc efficiency on welding temperature field induced by arc welding
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Investigation on the influence of heat source geometric parameters and arc efficiency on welding temperature field induced by arc welding

机译：热源几何参数对电弧焊接焊接温度场影响的研究

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摘要

The double ellipsoid volumetric heat source model developed by Goldak is the most used model to predict welding temperature distribution for arc welding processes, since this model provides the best description of the real state so far. Usually, the heat source needs to be calibrated in the thermal analyses because of unknown arc efficiency. However, the effects of the heat source parameters and arc efficiency on welding temperature field are unclear. In the present study, both numerical simulation technology and experimental method were used to study those influence on welding temperature fields in 2 mm thin bead on plate made of structural steel S355N. Based on the experimental data and simulation results, it shows that arc efficiency is the decisive factor on the peak temperatures at measured points and weld pool geometry. The heat source width (b) has certain influence both on peak temperatures at measured points and weld pool geometry. The rear length (ar) has influence on weld pool geometry, but that has no too much effect on peak temperatures at measured points. The front length (af) and depth (c) have slight influence both on the peak temperatures at measured points and the size of weld pool.
机译：Goldak开发的双椭球容量热源模型是最常用的模型，以预测电弧焊接过程的焊接温度分布，因为该模型到目前为止提供了真实状态的最佳描述。通常，由于未知的电弧效率，需要在热分析中校准热源。然而，热源参数和电弧效率对焊接温度场的影响尚不清楚。在本研究中，使用数值模拟技术和实验方法研究了由结构钢S355N制成的2mm薄珠子焊接温度场的影响。基于实验数据和仿真结果，它表明电弧效率是测量点和焊接池几何形状的峰值温度的决定性因素。热源宽度（B）对测量点和焊接池几何形状的峰值温度有一定的影响。后长度（AR）对焊接池几何有影响，但对测量点处的峰值温度没有太大影响。前长度（AF）和深度（C）在测量点处的峰值温度和焊接池的尺寸方面具有轻微的影响。

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  • 来源
    《DVS-Berichte》 |2017年第339期|共7页
  • 作者

    J. Sun; J. Klassen; T. Nitschke-Pagel; K. Dilger;

  • 作者单位

    Institute of Joining and Welding Technische Universitat Braunschweig;

    Institute of Joining and Welding Technische Universitat Braunschweig;

    Institute of Joining and Welding Technische Universitat Braunschweig;

    Institute of Joining and Welding Technische Universitat Braunschweig;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 焊接、金属切割及金属粘接;
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