EP 2197606 B1 20110921 - METHOD FOR PRODUCING HOLLOW FORGED PARTS
Title (en)
METHOD FOR PRODUCING HOLLOW FORGED PARTS
Title (de)
VERFAHREN ZUR HERSTELLUNG HOHLER SCHMIEDETEILE
Title (fr)
PROCEDE DE FABRICATION DE PIECES FORGEES CREUSES
Publication
Application
Priority
- FR 2008051720 W 20080926
- FR 0757922 A 20070928
Abstract (en)
[origin: WO2009050382A2] The invention relates to a method for producing hollow forged parts, that comprises the following steps: making a core of a lost material having a shape corresponding to the internal shape of the part to be obtained except for deformation during forging, positioning the core in a foundry mould, casting a metal around the core so as to completely surround the core in order to obtain a preform (18), sealing the preform (18) so that the core is completely isolated relative to the outside, forging the preform (18) in order to obtain the part having the desired shape, and decore the core of the part in order to obtain the hollow forged part.
IPC 8 full level
B21J 5/02 (2006.01); B21K 21/00 (2006.01); B22C 9/10 (2006.01)
CPC (source: EP)
B21J 5/002 (2013.01); B21J 5/02 (2013.01); B21K 21/00 (2013.01); B22C 9/106 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2921574 A1 20090403; FR 2921574 B1 20100416; AT E525151 T1 20111015; CN 101808762 A 20100818; CN 101808762 B 20130220; EP 2197606 A2 20100623; EP 2197606 B1 20110921; WO 2009050382 A2 20090423; WO 2009050382 A3 20090611
DOCDB simple family (application)
FR 0757922 A 20070928; AT 08840711 T 20080926; CN 200880107675 A 20080926; EP 08840711 A 20080926; FR 2008051720 W 20080926