Profile: J J Castings specializes in the heat treatment of metal components. We are an ISO 9001:2000 approved company. We offer a wide range of industry standard services that include induction hardening, plasma nitriding, stress relieving, and PVD coatings. Induction hardening is effected by passing a high frequency current through a suitably shaped inductor in close proximity to the surface to be hardened. The inductor is passed slowly over the surface, followed by a spray quench to achieve rapid heating and cooling which results in hardening. The process is extremely versatile, and is used on an infinite variety of shape & size components. Plasma nitriding is successfully carried out at a lower temperature and at a greater rate than gas nitriding. It produces a micro structure which is considerably different from that produced by gas nitriding.