EP 3980202 B1 20230726 - IMPROVED FOUNDRY MOULD FOR THE FORMATION OF TURBINE BLADE CERAMIC CORES
Title (en)
IMPROVED FOUNDRY MOULD FOR THE FORMATION OF TURBINE BLADE CERAMIC CORES
Title (de)
VERBESSERTE GIESSFORM ZUR HERSTELLUNG VON KERAMISCHEN KERNEN FÜR TURBINENSCHAUFELN
Title (fr)
MOULE DE FONDERIE AMÉLIORÉ POUR LA FORMATION DE NOYAUX CÉRAMIQUES D'AUBES DE TURBINE
Publication
Application
Priority
- FR 1906003 A 20190606
- FR 2020050941 W 20200603
Abstract (en)
[origin: WO2020245538A1] The invention relates to a mould (1) for producing a ceramic core by injection of a ceramic composition, the mould (1) comprising a body (10) in which an imprint (20) of the foundry core is formed, the imprint (20) comprising a primary cavity (20A) and a secondary cavity (20B) connected by a plurality of segments (20C), the mould (1) being characterised in that it comprises a primary arm (30A) configured so as to allow an injection of ceramic composition into the primary cavity (20A), and a secondary arm (30B) configured so as to allow an injection of ceramic composition into the secondary cavity (20B), and in that the ratio between the volume of the primary cavity (20A) and the volume of the secondary cavity (20B) is equal, plus or minus 15%, to the ratio between the volume of the primary arm (30A) and the volume of the secondary arm (30B).
IPC 8 full level
B22C 9/06 (2006.01); B22C 9/10 (2006.01); B22C 9/22 (2006.01); B22C 13/12 (2006.01)
CPC (source: CN EP US)
B22C 7/06 (2013.01 - CN); B22C 9/06 (2013.01 - EP US); B22C 9/10 (2013.01 - CN EP US); B22C 9/22 (2013.01 - CN EP US); B22C 13/12 (2013.01 - EP US)
Citation (examination)
EP 1854569 B1 20120111 - SNECMA [FR]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2020245538 A1 20201210; CN 113993641 A 20220128; CN 113993641 B 20230718; EP 3980202 A1 20220413; EP 3980202 B1 20230726; FR 3096911 A1 20201211; FR 3096911 B1 20210514; US 2022219226 A1 20220714
DOCDB simple family (application)
FR 2020050941 W 20200603; CN 202080044082 A 20200603; EP 20740372 A 20200603; FR 1906003 A 20190606; US 202017596167 A 20200603