铝合金变极性穿孔型等离子弧焊工艺的热源模型
Variable polarity plasma arc welding heat source model for an aluminum alloy
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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
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.-
Keywords:
- variable polarity plasma arc /
- temperature field /
- finite element /
- ANSYS
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期刊类型引用(2)
1. 侯东旭，殷子强，陈培敦，夏佃秀，王守仁. 不同活化剂对超薄板脉冲激光焊焊接接头组织及性能的影响. 电焊机. 2025(03): 48-57 . 
百度学术
2. 许爱平，侯继军，董俊慧，刘军，王枝梅. 基于响应面法设计的TC4钛合金激光焊复合活性剂优化. 焊接. 2021(10): 15-24+61-62 . 百度学术
其他类型引用(3)
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