Abstract
Such parts as gas converting retort, heating retort, muffle, basket, fixture, net, conveyer, fan, fan shaft, etc. made of heat resisting steel and also metallic heat elements or radiant tube usually are used to controlled atmospheres furnace for gas carburizing, bright heating or gas carbonitrizing.
These parts are eroded at high temperature due to oxidizing, carburizing, nitriding or carboniriding.
In this paper are reported such erosions observed as for many materials treated in controlled atmospheres. As the results these materials are classified to four types of erosion, A, B, a and b.
