| 铝合金变极性穿孔型等离子弧焊工艺的热源模型 |
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| 引用本文： | 卢振洋,王龙,陈树君,薛忠明,于洋,蒋凡. 铝合金变极性穿孔型等离子弧焊工艺的热源模型[J]. 焊接学报, 2012, 33(10): 87-91 |
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| 作者姓名： | 卢振洋 王龙 陈树君 薛忠明 于洋 蒋凡 |
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| 作者单位： | 1. 北京工业大学机械工程与应用电子技术学院,北京,100124
2. 北京卫星制造厂,北京,100080 |
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| 摘 要： | 选用包含面高斯热源和圆柱体热源模型的组合热源模型去模拟变极性穿孔型等离子弧焊工艺的温度场．通过大量的工艺试验，分析主要工艺参数对铝合金变极性穿孔型等离子弧焊成形的影响．借助有限元分析手段，在热源模型和实际工艺参数之间建立了联系，并通过线性回归分析的方法将这种联系用数学方式表达出来．结果表明，变极性穿孔型等离子弧焊除了电流和行走速度外，离子气流量、钨极内缩量和喷嘴末端到工件表面的距离都是十分重要的工艺参数，对焊缝形貌特征影响很大．
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| 关 键 词： | 变极性穿孔型等离子弧 温度场 有限元 ANSYS |
| 收稿时间： | 2012-01-03 |
Variable polarity plasma arc welding heat source model for an aluminum alloy |
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| LU Zhenyang,WANG Long,CHEN Shujun,XUE Zhongming,YU Yang and JIANG Fan. Variable polarity plasma arc welding heat source model for an aluminum alloy[J]. Transactions of The China Welding Institution, 2012, 33(10): 87-91 |
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| Authors: | LU Zhenyang WANG Long CHEN Shujun XUE Zhongming YU Yang JIANG Fan |
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| Affiliation: | Mechanical Engineering and Applied Electronics Technology Institute, Beijing University of Technology, Beijing 100124, China,Mechanical Engineering and Applied Electronics Technology Institute, Beijing University of Technology, Beijing 100124, China,Mechanical Engineering and Applied Electronics Technology Institute, Beijing University of Technology, Beijing 100124, China,Beijing Satellite Manufacturing Factory, Beijing 100080, China,Mechanical Engineering and Applied Electronics Technology Institute, Beijing University of Technology, Beijing 100124, China and Mechanical Engineering and Applied Electronics Technology Institute, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | Variable polarity plasma arc welding process is an important method for welding aluminum alloy.Experimental results show that in addition to current and welding speed, gas flow rate, shrinkage of tungsten and the height of the nozzle are very important parameters which influence weld characteristics.The surface Gauss heat source and the cylinder heat source were selected to simulate the welding temperature field.Through a lot of experiments, the effect of main process parameters on variable polarity plasma arc welding was analyzed.By finite element analysis method, the relation between the heat source model and practical process parameters was established, and through linear regression analysis method mathematical formula was set up. |
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| Keywords: | variable polarity plasma arc temperature field finite element ANSYS |
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