| 摘要: |
| 针对导管安装感应钎焊的特点,建立了工件的有限元分析模型.基于电磁场和温度场顺序耦合的有限元分析方法,采用ANSYS软件对导管焊接区域的温度场进行了三维瞬态分析.结果表明,导管接头焊接区域的温度场分布不均匀,在轴向上呈中间位置高,两边逐渐降低的分布,温度梯度较大.采用6点同步测温仪检测焊接区域的温度场,并与模拟值进行对比,表明模拟值与实测值吻合良好.研究结果可以为测温点的选取、钎焊过程控制方法的制定以及焊接缺陷形成机理的分析提供依据,并为改进工艺方法、改善温度场分布提供技术参考。 |
| 关键词: 不锈钢 感应钎焊 温度场 有限元 |
| DOI： |
| 分类号: |
| 基金项目:北京市自然科学基金资助项目(3022007) |
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| Numerical simulation on temperature field in on-site induction brazing of tubes |
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ZHANG Wei, QI Bojin, XU Haiying
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School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
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| Abstract: |
| Considering the characteristics of on-site induction brazing of tubes, the FEM model was built.Based on the electromagnetic and thermal coupled finite element method, the temperature distribution on tubes was simulated by ANSYS.The results show that temperature distribution on tubes is nonuniform.Using a six-point synchronous temperature measurement system with thermocouples, the temperature was measured.It is shown that the simulation results are in accordance with the experimental results.The present work not only provides a scientific basis for the position selection of temperature measurement, design of control method, and the analysis of welding defects, but also puts forward a method to optimize the process and improve the temperature distribution on tubes. |
| Key words: stainless steels induction brazing temperature field finite element |
