| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an induction heat treatment apparatus and an induction heat treatment method capable of partially adjusting heating ability with inexpensive facility cost. <P>SOLUTION: High frequency current is applied to a high-frequency induction heating coil 5 while a heating control coil 6 is opposed to a heating control part 4 (a gear-press fitting part 4) of an element 1 to be heated (crankshafts 1A and 1B) in the high-frequency induction heating coil 5 by disposing the heating control coil 6 on the outer perimeter of the high-frequency induction heating coil 5, and also high frequency current in the direction reverse to the high frequency current applied to the high-frequency induction heating coil 5 is applied to the heating control coil 6. As a result, partial overheat of the element 1 to be heated is controlled by partially adjusting the heating ability of the high-frequency induction heating coil 5. Also, the facility cost is inexpensive because heat treatment on multiple kinds of elements 1 to be heated having different shapes can be performed using the same facilities. <P>COPYRIGHT: (C)2013,JPO&INPIT |
