EP 0331539 B1 19940126 - Method of making forged blanks from bar material by upsetting, in particular for compressor blades, and tooling equipment for carrying out the method.
Title (en)
Method of making forged blanks from bar material by upsetting, in particular for compressor blades, and tooling equipment for carrying out the method.
Title (de)
Verfahren zur Herstellung geschmiedeter Rohlinge aus Stangenmaterial durch Stauchen, insbesondere für Kompressorschaufeln und Werkzeugausrüstung zur Durchführung des Verfahrens.
Title (fr)
Procédé de fabrication d'ébauches forgées en barre par refoulage, notamment pour aubes de compresseur et outillage de mise en oeuvre.
Publication
Application
Priority
FR 8801227 A 19880203
Abstract (en)
[origin: EP0331539A1] The upsetting method comprises at least two successive steps during which, at least after a first deformation stage, during the first step a contact is maintained between at least three generatrices (5a, 5b, 5c, 5d) of the bar (1b) to be upset and the inside surface of a first container (2) which comprises, between two of the said lines of contact respectively, a hollow longitudinal excrescence forming, in cross section, a lobed section (4a, 4b, 4c, 4d) and, during the second step, a contact is maintained between the apex generatrices (1d, 1e, 1f, 1g) of the longitudinal excrescences of the blank (1c) obtained in the first step and the inside surface of a second container (6). <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP US)
B21J 5/008 (2013.01 - EP US); B21J 5/08 (2013.01 - EP US); B21K 3/04 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0331539 A1 19890906; EP 0331539 B1 19940126; CA 1330172 C 19940614; DE 68912620 D1 19940310; DE 68912620 T2 19940519; FR 2626507 A1 19890804; FR 2626507 B1 19940422; IL 89160 A0 19890910; IL 89160 A 19920818; JP H01237039 A 19890921; JP H0732945 B2 19950412; US 4970887 A 19901120
DOCDB simple family (application)
EP 89400273 A 19890201; CA 589879 A 19890202; DE 68912620 T 19890201; FR 8801227 A 19880203; IL 8916089 A 19890203; JP 2475989 A 19890202; US 30517889 A 19890202