| 摘要 |
PROBLEM TO BE SOLVED: To execute the quenching without developing the unevenness by removing steam film developed so as to cover a work as soon as possible when the heated work is dipped into quenching agent. SOLUTION: The work is laid on a tray 4 and disposed to a prescribed quenching position 4' of a quenching vessel 1. At the position surrounding the prescribed quenching position 4', a vibration generating means 7 is arranged. The vibration generating means 7 has plural blades 15 vertically vibrated. The flexible blades 15 directly stir the quenching agent while bending in the quenching agent like a fan so as to develop the transverse vibration in the quenching agent. The transverse vibration (10-120 Hz) developed in the quenching agent is propagated to the prescribed quenching position 4' through the quenching agent. Since the vibrating wave is composed mainly of the transverse vibration (at least not the vibrating wave only in the vertical direction but the three dimensional wave), the steam film on the upper and the lower surfaces of the work laid on the tray 4 in the horizontal direction almost uniformly is removed.
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