| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a heat treatment method for a gear member and a device therefor where self-annealing treatment is performed by utilizing a part of the heat applied to a gear member upon quenching, thus energy saving is attained, and the simplification of equipment or the like can be realized. <P>SOLUTION: Each gear part 11b in an inner ring 11 is arranged so as to face a high frequency inductor 24 in the heat treatment device over the whole circumference. In this state, high frequency electric current is fed to the high frequency inductor 24 from the outside, and each gear part 11B in the inner ring 11 is collectively heated to a set temperature. Thereafter, cooling water is fed from the side of a passage member 26 in a state where the high frequency inductor 24 is stopped, thus each gear part 11B in a high temperature state is collectively cooled to a prescribed cooling temperature. Then, at the time when each gear part 11B reaches the prescribed cooling temperature, the feed of the cooling water is immediately stopped, thus remaining heat is secured on the side of the ring body 11A in the inner ring 11, and, by utilizing the remaining heat at this time, each gear part 11B in the inner ring 11 is self-tempered. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
