Induction tempering is a low temperature heat treating process normally performed after the induction hardening process has completed in order to reach a desired hardness to toughness range. Induction tempering of steel uses low-frequency electrical induction coils to produce results parallel to furnace tempering applications that typically take hours.
Induction tempering equipment results quickly. Tempering of hardened steels is a function of both time and temperature. Induction tempering uses shorter heating times (usually only seconds) and higher temperature to produce results equivalent to furnace tempering treatments that often require hours. Induction tempering can be performed on all hardened components. The result is a component with increased toughness, ductility and impact strength.