PURPOSE: To stably execute continuous production by adjusting the number of the revolutions of a rotator according to a rotating torque measured value of the stirring rotator at the time of producing a half-solidified metal.
CONSTITUTION: At the time of producing the half-solidified metal 17 by supplying molten metal 16 between the stirring rotator 1 having good heat conductivity and composed of horizontal axis rotating cylinder barrel and rotating and a fixed wall 4, while measuring the rotating torque of the stirring rotator 1, according to this measured value one side or both of the number of the revolutions of the stirring rotator 1, and gap between the stirring rotator 1 and a detaching jig 10 for solidified shell 18 generated and stuck to the stirring rotator 1 and the barrel peripheral surface, are adjusted. By this method, the half-solidified metal 17 can stably and continuously be produced.
HIRAI MASAZUMI
HIRONAKA KAZUSATO
TAKAHASHI HIROYOSHI
