Patent ID: 8497454
Filing Date: 2013-07-30
Classification: C21D,Y02P

Abstract:
1. An induction hardening monitoring apparatus that can be connected to an induction hardening apparatus in which a high-frequency inverter is connected to a capacitor and a heating coil, and in which a current transformer is provided between the capacitor and the heating coil, comprising: a current sensor for detecting output current from the high-frequency inverter; a voltage sensor for detecting a voltage generated in the heating coil; and a controller for monitoring a hardening processing based on a detection signal from the current sensor and a detection signal from the voltage sensor, wherein the controller monitors the hardening processing based on a preset sensor configuration, said sensor configuration being that the current sensor is electrically connected to a wire between the high-frequency inverter and the capacitor, and the voltage sensor has terminals connected to the heating coil at both ends in parallel.