Methods of Case Hardening

Various types of surface hardening or case hardening processes are. (a)       Carburising (b)       Cyaniding (c)        Nitriding Carburising The formation of a high carbon case is carried out by heating the steel in contact with a carbonaceous material. Carbon diffuses on to the surface layers of the metal, and the case is subsequently hardened by a suitable heat treatment. According to the nature of the carbonaceous material, three processes are recognized. (a)       Pack (solid) carburizing. (b)       Gas carburizing. (c)        Liquid carburising. Pack Carburising.  The steel components are packed in a…

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