C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 47/04 (2006.01) B22F 3/15 (2006.01) C22C 47/06 (2006.01) C22C 47/14 (2006.01) C22C 47/20 (2006.01)
Patent
CA 2710455
The invention relates to a method for making a metal part that comprises a reinforcement (15) made of ceramic fibres. The method comprises the following steps: forming at least one annular-shaped insert (15) by assembling a bundle of metal-coated fibres; placing the insert into a hollow metal mould (10) such that the insert is spaced between the walls (10a, 10b) of the mould; filling the mould with a metal powder; generating vacuum in the mould and closing the same; hot isostatic compressing the assembly at a temperature and under a pressure sufficient for binding the powder particles between them and for binding the insert fibres between them; removing the mould and optionally machining to the desired shape.
La présente invention porte sur un procédé de fabrication d'une pièce métallique comportant un renfort (15) de fibres céramiques. Le procédé comprend les étapes suivantes :- formation d'au moins un insert (15) de forme annulaire par assemblage en faisceau de fibres céramiques enduites de métal, - incorporation de l' insert dans un moule (10) métallique creux de telle façon que l' insert soit espacé des parois (10a, 10b) du moule, - remplissage du moule avec une poudre métallique, - mise sous vide et fermeture du moule, - compression isostatique à chaud de l'ensemble, à une température et une pression suffisantes pour lier les particules de poudre entre elles et lier les fibres de l'insert entre elles, - élimination du moule et usinage le cas échéant à la forme souhaité.
Goudreau Gage Dubuc
Messier-Dowty Sa
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