Roller Cooling Control Device

Abstract: In the present invention, at a transition time point at which a transition has occurred from rolling to an idling state, a rolling/idling prediction unit predicts the time it will take for a next material to be rolled to reach a roller. A cooling water quantity monitor unit acquires a quantity of cooling water being supplied to a nozzle at the transition time point. A roller thermal expansion prediction unit sets the time predicted by the rolling/idling prediction unit as a prediction period and predicts thermal expansion of the roller for the prediction period and at the transition time point. A cooling water quantity reduction computation unit, while coordinating with the roller thermal expansion prediction unit, computes a cooling water quantity which is to be reduced within the prediction period so that the difference between the thermal expansion at the transition time point and the thermal expansion for the prediction period is kept within a prescribed range. A variable flow rate valve adjustment unit adjusts the aperture of a variable flow rate valve so that the cooling water quantity is reduced only by the quantity computed by the cooling water quantity reduction computation unit.

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