Vacuum brazing process with improved gettering

摘要

A method of vacuum brazing large assemblies in an enclosed evacuated furnace with brazing material containing a gettering agent in the area of the joints to be formed, including sensing the temperature of the assembly to be brazed adjacent the joints on the exterior surface of the assembly, and shifting an additional quantity of gettering agent from a cool zone into a hot zone in the furnace as the surface temperature of the assembly approaches the brazing temperature. A furnace adapted to carry out this method is also disclosed.