| 航天高强铝合金点焊工艺对焊点质量的细致影响 |
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| 引用本文： | 王锋,宋永伦,张军.航天高强铝合金点焊工艺对焊点质量的细致影响[J].焊接学报,2010,31(12):37-40,44. |
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| 作者姓名： | 王锋 宋永伦 张军 |
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| 作者单位： | 北京工业大学机电学院,北京,100124 |
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| 摘 要： | 通过对航天高强铝合金点焊焊核的显微分析,得到了不同焊接参数(压力、电流)对焊核几何尺寸、晶粒大小的影响,获得了焊接参数与焊核显微组织的相关性,能够在焊接参数变化较小、特征信号没有明显变化的情况下观察到焊接参数对焊核质量的细致影响,为点焊过程的精量化控制的进一步研究打下了基础.采用有限元分析软件SYSWELD,对铝合金点焊过程进行了建模仿真.研究了不同电极力、点焊电流与焊点熔核半径等焊点特征量之间的关系及其规律性.
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| 关 键 词： | 高强铝合金点焊 显微组织分析 有限元仿真 |
| 收稿时间： | 2009/7/9 0:00:00 |
Detailed effect of spot welding process on spot quality of high-strength aluminum alloy used in astronavigation |
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| WANG Feng,SONG Yonglun and ZHANG Jun.Detailed effect of spot welding process on spot quality of high-strength aluminum alloy used in astronavigation[J].Transactions of The China Welding Institution,2010,31(12):37-40,44. |
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| Authors: | WANG Feng SONG Yonglun and ZHANG Jun |
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| Affiliation: | College of Mechanical and Electrical Engineering, Beijing University of Technology, Beijing 100124, China,College of Mechanical and Electrical Engineering, Beijing University of Technology, Beijing 100124, China and College of Mechanical and Electrical Engineering, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | The influence of welding parameters(pressure and current) on the size of nugget and heat-affect zone is obtained by analysing the microstructure of the nugget of the high-strength aluminum spot welding,the correlation between the parameters and the microstructure is obtained too,and the detailed influence of the little variation of the welding parameters and the less distinct change of the signals on welding nugget quality is observed,which lay a foundation for the further study of precise control of the spot welding process.The building model and the simulation of spot welding are achieved through finite element analysis software SYSWELD,and the relationship between the electrode pressure,welding current and nugget size is studied respectively. |
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| Keywords: | high-strength aluminum spot welding micro-structure analyzing finite element simulation |
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