| 摘要 |
Provided are: a molded material production method that not only makes it possible to prevent a flange section from becoming unnecessarily thick, reduce the weight of a molded material, and shrink the size of a base material metal plate, but also makes it possible to homogenize the plate thickness of the flange section and obtain a highly precise degree of flatness; and a molded material. A processed material is produced by molding processing that includes at least one instance of drawing pass processing, at least one instance of drawing processing that is performed after the drawing pass processing, and at least one instance of coining processing that is performed after the drawing processing. A punch (31) that is used in the drawing pass processing is configured so that the width or the rear end side thereof is wider than the width of the tip side thereof. Ironing processing of an area that corresponds to the flange section of the base material metal plate is performed by pushing the punch (31) together with the base material metal plate into a push-in hole (30a). |
