Atmosphere Carbonitriding

Commonly referred to as Carburizing, Carbonitriding is the process which gives a hard surface on lower carbon steels. This is accomplished by maintaining a carbon-rich atmosphere in contact with the mild steel while maintaining the temperature generally in the 1550o-1700oF range, followed by rapid cooling via liquid bath. The carbon combines with the mild steel surface to produce a thin carbon layer which hardens when quenched. NATIONAL HEAT TREAT has 3 Atmosphere Batch furnaces for performing this process.