Tungsten-Inert-Gas-(TIG) Welding of Zircaloy Fuel Rods under 40 Bar Helium-Gas.

摘要

TIG-Welding in a clean helium atmosphere was investigated with a gas pressure up to 40 bar. The technology for the application in fabrication is feasible when pressure filling-bore are welded. A more economical pressure welding of end plugs without pressure filling-bores is possible up to 30 bar, though some problems exist with respect to the welding-porosity. Welding under pressure is also possible up to 40 bar; additional difficulties arise from a limitation of the regulation of the welding arc current. (Atomindex citation 09:375770)