HEAT TREATMENT APPARATUS AND HEAT-TREATMENT METHOD FOR STEEL BALL

摘要

PROBLEM TO BE SOLVED: To lumply perform an induction-heating to a plurality of steel balls without accompanying the generation of leaning heat and to prevent the melted stickiness of both of the steel balls.

SOLUTION: A spiral-state steel ball guiding passage 8 rounding the axis almost coinciding with the direction of a magnetic flux 3 generated with an induction-heating coil 2 is arranged and the steel balls 1 are induction-heated while rotating the steel balls 1 on the steel ball guiding passage 8 so as not to coincide the direction of the magnetic flux 3 with the rotating axis 5 in the magnetic flux 3 generated with the induction-heating coil 2 by rotating on the steel ball 1 on the guiding passage 8.

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