BATCH ANNEALING FURNACE FOR COILS

摘要

A batch annealing furnace includes a coil support base on which an end face of a coil is mounted and that supports the coil with an axis of the coil being upright, an inner cover that covers an entire body of the coil mounted on the coil support base, and a cooling pipe that extends downward from the upper part of the inner cover to a cavity of the inner peripheral part of the coil mounted on the coil support base and cools the coil from the inner surface side by passing a coolant through the inside of the cooling pipe. The cooling pipe comprises an introduction pipeline that introduces the coolant from the upper part of the inner cover toward the coil support base, a curved pipeline that changes a direction of flow of the coolant introduced into the introduction pipeline toward the upper part of the inner cover, and a return pipeline that returns the coolant of which direction of flow has changed by the curved pipeline toward the upper part of the inner cover.