Blank for a flow forming method
AssigneeROLLS-ROYCE plc
InventorsMartin TUFFS, Jill MISCANDLON
Life of this patent
Estimating the term…
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.
Claims14
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.
A method of flow forming a shaped article (51), comprising:
- providing a stepped mandrel (41) that comprises a first mandrel region (42) having a first outer mandrel diameter (44) and a second mandrel region (43) having a second outer mandrel diameter (45) that is larger than the first outer mandrel diameter (44);
- providing a tubular blank (31) having a stepped inner profile;
- locating the tubular blank (31) on the mandrel (41);
- and
- plastically deforming the tubular blank (31) over the mandrel (41) to create the shaped article (51).
Dependencies are inferred from the claim text.