公开(公告)号：US20180229284A1

公开(公告)日：2018-08-16

申请号：US15896110

申请日：2018-02-14

Applicant: ROLLS-ROYCE plc

Inventor： Martin TUFFS ,  Craig A. JOHNSON

IPC: B21B13/10 ,  B21B45/00

CPC classification number: B21B13/10 ,  B21B45/00 ,  B21B2205/00 ,  B21D22/16

Abstract: A method of shear forming a component comprises the steps of: (i) providing a pre-formed metallic sheet blank, the sheet blank having a first surface and an opposite second surface, the perpendicular separation between the first surface and the second surface defining a thickness of the sheet blank; (ii) applying a surface modification process to the first surface of the sheet blank to reduce a surface roughness of the first surface to a first predetermined roughness value; (iii) positioning the second surface of the sheet blank against a mandrel; and (iv) applying a roller to the first surface of the sheet blank in a shear forming operation to form the sheet blank into the component.

公开(公告)号：US20200282448A1

公开(公告)日：2020-09-10

申请号：US16810007

申请日：2020-03-05

Applicant: ROLLS-ROYCE plc

Inventor： Martin J. RAWSON ,  Paul O. HILL ,  Martin TUFFS ,  Carl BOETTCHER

IPC: B21J5/02 ,  F02C6/02

Abstract: A method of manufacturing a component, the method including a maraging steel blank with an initial shape; and performing an incremental cold forming operation on the maraging steel blank, wherein the incremental cold forming operation reduces a thickness of the maraging steel blank.

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

IPC: B21C37/16 ,  B21B17/06 ,  B21D37/10

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.

公开(公告)号：US20150083284A1

公开(公告)日：2015-03-26

申请号：US14475654

申请日：2014-09-03

Applicant: ROLLS-ROYCE PLC

Inventor： Martin John RAWSON ,  John Harold BOSWELL ,  Martin TUFFS ,  George William WHITEHURST ,  Paul Owen HILL

IPC: C21D8/00 ,  C21D1/06 ,  C22C38/60 ,  C22C38/46 ,  C22C38/00 ,  C22C38/24 ,  C22C38/22 ,  C22C38/04 ,  C22C38/02 ,  C21D1/18 ,  C22C38/44

CPC classification number: C21D8/005 ,  B21D22/14 ,  C21D1/06 ,  C21D1/18 ,  C21D1/25 ,  C21D1/30 ,  C21D6/002 ,  C21D8/10 ,  C21D9/08 ,  C21D9/28 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/44 ,  C22C38/46 ,  C22C38/60

Abstract: A method of forming a shaped article. The method comprises providing a pre-form 40 comprising a chromium molybdenum vanadium steel alloy, heat treating the pre-form to obtain a surface hardness of between 420 and 480 according to the Vickers hardness test, and, subsequent to the heat treating step, flow forming the pre-form 40 to shape the pre-form.

Abstract translation: 一种形成成型制品的方法。 该方法包括提供包含铬钼钒钢合金的预成型体40，根据维氏硬度试验热预处理以获得420至480的表面硬度，并且在热处理步骤之后，流动 形成预成型件40以使预成型件成型。