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公开(公告)号：US20200147662A1
公开(公告)日：2020-05-14
申请号：US16676540
申请日：2019-11-07
Applicant: ROLLS-ROYCE plc
Inventor： Martin TUFFS , Jill MISCANDLON
Abstract: There is disclosed a tubular blank (31) for attaching to a stepped mandrel (41) of a flow forming assembly, wherein the tubular blank (31) has a stepped inner profile that may be tailored to the shape of the mandrel (41) before any flow forming is carried out on the blank (31). Also disclosed is a corresponding method of flow forming a shaped article by plastically deforming the tubular blank (31) over the stepped mandrel (41), where the forming of the shaped article may be carried out in one operation.
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