短路过渡CO_2气体保护焊结合型热源模型的研究  

Research on combined heat source model of short-circuit transfer CO_2 gas shielded arc welding

作　　者：许晓航[1] 郑振太[1] 付坤[1] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300132

出　　处：《焊接技术》2010年第12期18-20,共3页Welding Technology

摘　　要：为准确地模拟短路过渡CO2气体保护焊焊接温度场分布特点,根据试验结果推导出了适用于短路过渡的熔滴热热源模型,建立了结合电弧热和熔滴热共同作用的结合型热源模型。并将结合型热源模拟结果、高斯热源模拟结果与实际温度场的测量试验结果进行了比较分析。结果表明,与高斯热源模型相比,使用结合型热源模型更能准确地模拟短路过渡CO2气体保护焊焊接温度场的分布特点。In order to simulate the temperature field distribution of short-circuit transfer CO2 gas shielded arc weldingaccurately,a droplet heat source model applied to short-circuit transition was derived according to the experiment anda combination heat source model affected by the electric arc heat and droplet heat was established.It compared thecombined heat source,Gaussian heat source simulation with the actual temperature field measurement test.Theresults showed that compared with the Gaussian heat source model,the combined heat source model was moreaccurate to simulate the temperature field distribution of short-circuit transfer CO2 gas shielded arc welding.

关 键 词：短路过渡 CO2气体保护焊 焊接温度场 结合型热源模型 

分 类 号：TG402[金属学及工艺—焊接]