Method of manufacturing molded material, and said molded material

Abstract

The present invention provides a method for manufacturing a molded member by carrying out a multi-stage drawing process and at least one finishing ironing process on a base metal sheet, the molded member comprising: a tubular body; and a flange formed at an end portion of the body, wherein the multi-stage drawing process comprises: a preliminary drawing process for forming a preliminary body having a body element from the base metal sheet; and a plurality of compression drawing processes performed after the preliminary drawing process, the compression drawing processes drawing the body element while applying compressive force along a depth direction of the body element to a circumferential wall of the body element; and wherein the at least one finishing ironing process is carried out such that a mold clearance of an upper portion of the body element is narrower than a mold clearance of a lower portion of the body element.

Dependencies are inferred from the claim text.