Decarburization of bearing steel

Decarburization is a phenomenon that the surface carbon content of steel decreases when it is heated. The decarburization process is that carbon in steel reacts with hydrogen or oxygen at high temperature to form methane or carbon monoxide.

DECARBURIZATION is the result of diffusion, when decarburization, on the one hand, oxygen diffuses into the steel, on the other hand, carbon in the steel diffuses outwards. From the final result, decarburization layer can be formed only when the dragging rate exceeds the oxidation rate. When the oxidation rate is very high, no obvious decarburization can occur.