摘要
针对普通钨极氩弧焊承载电流小、焊接效率低的问题,对厚度为4mm的6063铝合金板堆焊进行温度场数值模拟,采用双椭球热源焊接模型,运用Simufact welding软件对焊接进行仿真,模拟中综合考虑对流传热、辐射换热和接触传热等热量传递的影响,对比分析普通TIG焊和熔丝TIG焊的温度分布特点,研究熔丝TIG焊焊接过程中电流大小对温度场的影响。结果表明:相对于普通TIG焊,熔丝TIG焊的效率更高;随着电流的增大,熔丝TIG焊的熔宽和熔深均增加。模拟结果可为铝合金高效焊接提供参考。
Aiming at the problems of low current carrying current and low welding efficiency of ordinary argon tungsten arc welding, numerical simulation of temperature field was carried out for surfacing welding of 6063 aluminum alloy plate with a thickness of 4 mm. The welding model of double ellipsoid heat source is adopted, and the welding is simulated by Simufact welding software. In the simulation, the effects of heat transfer such as convective heat transfer, radiation heat transfer and contact heat transfer are comprehensively considered.The temperature field distribution of ordinary TIG welding and Molten Wire TIG welding are compared and analyzed, the effect of current on temperature field during Molten Wire TIG welding was studied. The results show that, compared with ordinary TIG welding, the efficiency of the Molten Wire TIG welding is higher. With the increase of the electric current, the width and depth of fusion increase. This provides an efficient and stable way for high-efficiency welding of aluminum alloys.
作者
王喜临
刘爱国
WANG Xilin;LIU Aiguo(Shenyang Ligong University,Shenyang 110159,China)
出处
《沈阳理工大学学报》
CAS
2021年第4期78-82,共5页
Journal of Shenyang Ligong University
关键词
熔丝钨极氩弧焊
铝合金
温度场
数值模拟
molten wire tungsten inert gas welding
aluminium alloy
temperature field
numerical simulation
