The welding thermal cycle and section dimensions of the welding seam were measured in the condition of the simulated welding process parameters for checking simulation results.

It is shown that under suitable welding condition, the alloy can be welded well by using TIG arc welding and the welding wire having the same composition as the alloy.

A series of welding process testing showed that using recessed tube-tube sheet, high Cr-Ni welding materials and automatic TIG welding technology could improve the welding quality of tube-tube...