Global Patent Index - EP 1375026 A3

EP 1375026 A3 20060524 - Casted forged parts without ejectortraces

Title (en)

Casted forged parts without ejectortraces

Title (de)

Gegossene Schmiedeteile ohne Auswerferspuren

Title (fr)

Pièces coulées forgées sans traces d'éjecteurs

Publication

EP 1375026 A3 20060524 (FR)

Application

EP 03356082 A 20030527

Priority

FR 0206873 A 20020531

Abstract (en)

[origin: EP1375026A2] Ejection of workpieces obtained by casting and forging of light metals, e.g., aluminum and its alloys, involves moving the receiving areas of the ejector pins from the body of the preform (2) to the side peripheral edge. During forging, the zones allowing ejection of the preform are (2b) located in the burr of the forged workpiece and are cut and removed at the same time as the burr. Preferred Features: Along the side peripheral edge of the preform and outside the piece to be produced, there are one or more continuous or spaced projecting zones that can constitute base planes that can make contact with an ejector pin assembly for lifting the preform out of its die. The invented process is applied in a COBAPRESS procedure (outlined in EP119365A) involving successive operations of casting and forging of workpieces.

IPC 8 full level

B21J 5/00 (2006.01); B21J 5/02 (2006.01); B21J 13/14 (2006.01)

CPC (source: EP)

B21J 5/00 (2013.01); B21J 5/002 (2013.01); B21J 5/02 (2013.01); B21J 13/14 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1375026 A2 20040102; EP 1375026 A3 20060524; EP 1375026 B1 20080813; AT E404306 T1 20080815; DE 60322787 D1 20080925; ES 2310646 T3 20090116; FR 2840242 A1 20031205; FR 2840242 B1 20050107

DOCDB simple family (application)

EP 03356082 A 20030527; AT 03356082 T 20030527; DE 60322787 T 20030527; ES 03356082 T 20030527; FR 0206873 A 20020531