In-situ closed loop temperature control for induction tempering

Details In-situ closed loop temperature control for induction tempering In-situ closed loop temperature control for induction tempering

1998-08-25

2000-07-04

Leung, Philip H.

Electric heating

Inductive heating

With power supply system

219632, H05B 608

Patent

active

060842245

ABSTRACT:
A method and apparatus for in-situ induction tempering is provided in which an induction coil is used to temper a part in-situ at the location. The use of an induction coil in-situ at the heat treating location eliminates the need (and time and expense) of a multi-step process wherein in part to be tempered would otherwise have to be moved from the quenching location to the tempering location, such as at a tempering furnace. It also eliminates the need for the tempering furnace, which is a great space savings. In one form of the invention, the power supplied to the induction coil is controlled by a closed-loop temperature controller that is controlled by the temperature in the vicinity of the tempered part, as opposed to simply be controlling on time at temperature.

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