Monel-400合金板焊接温度场有限元分析
王文君，陈重毅2
(1.包钢西北创业实业发展有限公司包钢设计研究院，内蒙古包头 014010 2.内蒙古科技大学材料与冶金学院，内蒙古包头 014010)
关键字：镍基合金；高斯旋转体；焊接温度场；有限元法
摘要：利用ANSYS有限元分析软件，根据钨极氩弧焊焊接特点，建立了高斯衰减热源模型，并在一定厚度、一定焊接工艺条件下对Monel-400合金板焊接温度场进行了模拟计算。模拟结果分析得到：利用高斯旋转热源在焊接过程中形成了长度为12mm，宽度为7mm，深度为5mm的熔池。熔池上表面与下表面温度相差约620℃，热影响区节点温度随到焊缝中心距离的增加而不断减小。模拟结果表明改进后的热源模型与实际焊接较为吻合，有利于提高焊接温度场的模拟计算精度。
Finite element analysis of welding temperature fields on Monel-400 alloy plates
WANG Wen-jun1,CHEN Zhongyi2
(1. Baogang Design & Research Institute, Baogang Northwest Venture Industrial Development Co Ltd, Baotou 014010, China 2. Material and Metallurgy School, Inner Mongolia University of Science and Technology, Baotou 014010, China)
Key words:Ni-based alloy; Gauss rotator; welding temperature fields; Finite element method
Abstract: Using ANSYS finite element analysis software and based on the characteristics of gas tungsten arc welding, the model of Gaussian decay heat source was established, and the welding temperature field of the Monel-400 alloy plates was simulated under a certain thickness and welding parameters. The simulation results show that using the Gaussian decay heat source resulted inthe melt pool at a length of 12mm, 7mm in width , and 5mm in depth. The temperature difference between theupper surface and the lower surface of the molten pool is approximately 620℃. The temperature of the heat-affected zone decreases with the increase of the distance from the welding centre.It is also shown that the improved heat source model consist with the actual situation of the welding heat very well, helping improve the accuracy of the welding temperature field simulation.