BLANK, MOLDED ARTICLE, MOLD AND METHOD FOR PRODUCING BLANK

摘要

Provided is a plate-like blank (10) for press molding, which is produced by subjecting a metal plate (30) to a shearing work. The blank (10) has a sheared surface (14b) and a broken surface (14c) in the plate thickness direction, and has a shearing processed surface (14) which is formed to be annular when viewed in plan. When viewed in plan, the edge of the shearing processed surface (14) has curved portions (20) that are curved in a concave shape. The average of the lengths of the broken surface (14c) in the plate thickness direction in the curved portions (20) is larger than the average of the lengths of the broken surface (14c) in the plate thickness direction in the whole periphery of the shearing processed surface (14).