METAL MOLD FOR HOT PRESSING

摘要

A metal mold for hot pressing according to the present invention includes a fixed mold and a movable mold disposed such that molding surfaces of the fixed mold and the movable mold face each other. The metal mold sandwiches a heated workpiece between the fixed mold and the movable mold to press the workpiece while, at the same time, cooling the workpiece by keeping the molding surfaces of the fixed mold and the movable mold in contact with surfaces of the workpiece. A layer formed by a shape-memory alloy is formed at least at a portion, on which fitting during pressing is tight, of the molding surface of the fixed mold. According to the metal mold for hot pressing of the present invention, formation of a gap between the metal mold and the workpiece is suppressed and uniform contact between the metal mold and the workpiece can be achieved.

主权项

1. A metal mold for hot pressing comprising a fixed mold and a movable mold disposed such that molding surfaces of the fixed mold and the movable mold face each other, the metal mold sandwiching a heated workpiece between the fixed mold and the movable mold to press the workpiece while, at the same time, cooling the workpiece by keeping the molding surfaces of the fixed mold and the movable mold in contact with surfaces of the workpiece,
wherein a layer formed by a shape-memory alloy is formed at least at a portion, on which fitting during pressing is tight, of the molding surface of the fixed mold.