工艺参数对TIG焊接温度场影响规律的有限元模拟  

FEM Investigation on Influence of Process Parameters on Temperature Fields in TIG Welding

作　　者：刘翔宇[1] 

机构地区：[1]承德石油高等专科学校工业技术中心,河北承德067000

出　　处：《承德石油高等专科学校学报》2016年第2期22-27,共6页Journal of Chengde Petroleum College

摘　　要：针对奥氏体不锈钢0Crl8Ni9的TIG焊接过程,建立了相应的数学模型和物理模型,并基于ANSYS平台进行有限元计算,分析了焊接速度、焊接电流和电弧电压等工艺参数对焊接温度场的影响规律。结果表明,在其他条件一定的情况下,焊接电流和电弧电压直接影响焊接热输入,进而对焊接热循环的峰值温度影响显著。焊接速度仅对熔合区和热影响区的峰值温度有较大影响,但对母材其他部位的影响较小。A mathematical model of heat transfer and physical model suitable to practical production were established for the calculation of temperature distribution during TIG welding process of austenitic stainless steel 0Crl8Ni9. The influence of process parameters such as welding speed,welding current and voltage on temperature distribution were investigated by adopting ANSYS software. The result indicated that the welding current and voltage will directly impact the energy input during the welding process,and then,the peak temperature of the weld thermal cycle. The change of the welding speed has mainly influenced peak temperature in fusion zone（ FZ） and heat affected zone（ HAZ） and it has a less effect on the temperature in other areas.

关 键 词：焊接工艺参数 温度场 有限元法 TIG焊接 ANSYS 

分 类 号：TG402[金属学及工艺—焊接]