Aimming at the characters of TIG helium-arc micro-gap butt welding of tantalum sheet based on ANSYS,the temperature field was calculated when the boundary conditions were different at the gap.

• 针对钽薄板微间隙TIG氦弧焊接方法,基于有限元分析软件ANSYS,采用数值模拟方法计算了间隙处取不同边界条件时温度场的分布。