Numerical Simulation on Temperature Field of TIG Welding for Iridium-tungsten Alloy

Ir-W alloy had the advantages of high temperature resistance,corrosion resistance,high hardness The clads produced with Ir-W alloy were sealed with TIG welding.According to energy conservation principle and characteristics of TIG welding,the numerical model of non-steady TIG welding pool shape under moving arc was established.By introducing the heat enthalpy and Gauss heat model of surface