Explanation

It is a thermo-chemical treatment process in which carbon and nitrogen elements are simultaneously infiltrated into the surface layer of low carbon steel, and the surface layer is strengthened mainly by carburizing. Gas carbon nitrogen co infiltration method is often used, with a co infiltration temperature of 800? At 870 ° C, the co infiltration time is several hours, the surface carbon content is greater than 0.6%, the nitrogen content is 0.1% -0.5%, and the depth of the infiltration layer is generally 0.2-1mm. carbonitriding parts have the advantages of high hardness of nitriding surface and deep carburizing layer of carburizing, and have excellent wear resistance, corrosion resistance, high strength and fatigue resistance. At the same time, the matrix grain is fine because the co cementation temperature is lower than the carburizing temperature, and can be directly quenching after co cementation.

Classification