EP 4373796 A1 20240529 - METHOD FOR MANUFACTURING A HOLLOW PART MADE OF METAL MATRIX OR CERAMIC MATRIX COMPOSITE REINFORCED WITH SHORT FIBERS
Title (en)
METHOD FOR MANUFACTURING A HOLLOW PART MADE OF METAL MATRIX OR CERAMIC MATRIX COMPOSITE REINFORCED WITH SHORT FIBERS
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES HOHLEN TEILS AUS MIT KURZEN FASERN VERSTÄRKTER METALLMATRIX ODER KERAMIKMATRIXVERBUNDSTOFF
Title (fr)
PROCEDE DE FABRICATION D'UNE PIECE CREUSE EN MATERIAU COMPOSITE A MATRICE METALLIQUE OU CERAMIQUE RENFORCEE AVEC DES FIBRES COURTES
Publication
Application
Priority
- FR 2010738 A 20201020
- FR 2021051767 W 20211012
Abstract (en)
[origin: WO2022084602A1] The invention relates to a method for manufacturing a hollow part made of metal matrix or ceramic matrix composite, comprising the following steps: • - preparing a raw material (30) comprising at least short fibers and a ceramic matrix or metal matrix precursor charge, • - positioning a sacrificial core (10) in a molding cavity (23) of injection-molding equipment (20), the molding cavity having dimensions larger than the dimensions of the sacrificial core, • - shaping the raw material (30) by injection molding said raw material into the free space (230) between the sacrificial core (10) and an internal wall of the molding cavity so as to obtain a green part comprising the sacrificial core and the shaped raw material, • - extracting the green part from the injection-molding equipment (20), • - densifying the raw material (30) by flash sintering of the green part so as to transform the charge into a ceramic matrix or into a metal matrix, • - removing or eliminating the sacrificial core (10) so as to obtain a hollow part made of ceramic matrix or metal matrix composite, • wherein the sacrificial core is coated with a flexible graphite sheet, with a graphite layer deposited by spraying or with a boron nitride paint layer before the step of injecting the raw material.
IPC 8 full level
C04B 35/565 (2006.01); B22F 3/04 (2006.01); B22F 3/105 (2006.01); B22F 3/22 (2006.01); B22F 5/04 (2006.01); C04B 35/575 (2006.01); C04B 35/584 (2006.01); C04B 35/593 (2006.01); C04B 35/634 (2006.01); C04B 35/638 (2006.01); C04B 35/80 (2006.01); C22C 47/14 (2006.01); C22C 49/04 (2006.01); C22C 49/06 (2006.01); C22C 49/08 (2006.01); C22C 49/11 (2006.01); C22C 49/14 (2006.01)
CPC (source: EP US)
B22F 3/105 (2013.01 - EP); B22F 3/225 (2013.01 - EP US); B22F 5/04 (2013.01 - EP US); B22F 5/10 (2013.01 - US); C04B 35/565 (2013.01 - EP); C04B 35/575 (2013.01 - EP); C04B 35/584 (2013.01 - EP); C04B 35/593 (2013.01 - EP); C04B 35/63408 (2013.01 - EP); C04B 35/63488 (2013.01 - EP); C04B 35/638 (2013.01 - EP US); C04B 35/64 (2013.01 - US); C04B 35/80 (2013.01 - EP US); C22C 47/14 (2013.01 - EP); C22C 49/06 (2013.01 - EP); C22C 49/08 (2013.01 - EP); C22C 49/11 (2013.01 - EP); C22C 49/14 (2013.01 - EP); B22F 3/105 (2013.01 - US); B22F 2003/1051 (2013.01 - EP US); B22F 2005/103 (2013.01 - EP US); B22F 2998/10 (2013.01 - EP US); B22F 2999/00 (2013.01 - EP); C04B 2235/522 (2013.01 - EP); C04B 2235/5224 (2013.01 - EP US); C04B 2235/5244 (2013.01 - EP US); C04B 2235/5248 (2013.01 - EP US); C04B 2235/526 (2013.01 - EP); C04B 2235/6022 (2013.01 - EP US); C04B 2235/6028 (2013.01 - EP US); C04B 2235/666 (2013.01 - EP)
C-Set (source: EP)
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)
FR 3115280 A1 20220422; FR 3115280 B1 20230721; CN 116547253 A 20230804; EP 4373796 A1 20240529; US 2023382813 A1 20231130; WO 2022084602 A1 20220428
DOCDB simple family (application)
FR 2010738 A 20201020; CN 202180071534 A 20211012; EP 21810068 A 20211012; FR 2021051767 W 20211012; US 202118248652 A 20211012