Induction Hardening: Induction hardening is a method of steel surface heat treatment. In order to be able to induction heat treat (harden) the surface of a steel, there are three prerequisites necessary: (1) sufficient carbon in the steel to transform to a martensitic structure at the surface of the steel; (2) appropriate austenitizing (hardening) temperature for the steel surface to transform to austenite; (3) appropriate cooling rate that will transform the created and formed austenite into martensite at the steel surface.

  Induction Heating: Induction heating is a method of heating a metal by electrical energy that will create an electrical resistance and hysteresis, generating heat at the steel surface by creating rapid electro magnetic energy at the surface. However, induction is not only used for hardening. Other processes that can be accomplished by induction technology include induction hardening, tempering, heating of steel billets for forging, heating for forming and brazing.

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