Definitions for "Induction Hardening"
A process for surface hardening steel in which the surface of the steel is heated to an austenitic condition, by eddy currents from an inductor coil carrying a high-frequency alternating current, and then quenched immediately to form martensite. The depth of hardening achieved can be modified by changing the frequency of the inductor coil current. To obtain sufficient hardness the steels hardened in this manner usually contain at least 0.3%C.
A form of hardening in which the heating is done by induced electrical current.
Process of hardening the surface of a casting be heating it above the transformation range by electrical induction, followed by rapid cooling.