Method for manufacturing a turbomachine part from composite material

Abstract

Method for manufacturing a turbomachine part from composite material The invention relates to a method for manufacturing a turbomachine part from composite material, comprising: - shaping a fibrous blank obtained by three-dimensional weaving comprising one or more deployable fibrous portions (3), comprising: positioning a shaping bladder (5) opposite a first face of each deployable fibrous portion, deploying each deployable fibrous portion by inflating the bladder with maintaining a second face of each deployed fibrous portion, opposite the first face, against a first shaping portion (7), each deployed fibrous portion being maintained in shape between the first shaping portion and the inflated bladder,and the positioning of a second conforming part (9) opposite the first face of each fibrous portion thus maintained in shape, with progressive deflation of the bladder concurrent with the approach of the second conforming part so as to maintain each fibrous portion in shape between the first and second conforming parts, and - the densification of the blank thus shaped by the formation of a matrix in a porosity thereof. Figure for the abbreviation: Fig. 3.

Claims

comprising deployable fibrous portions, formed by a separation of the fabric, intended to form a reinforcement of a functional part of the blade, distinct from a structural part.

5. Method according to claim 4, in which the deployable fibrous portions (13) are intended to form at least one of a reinforcement of a platform, spoilers or heel.

6. A method according to any one of claims 1 to 5, wherein the part is made of ceramic matrix composite material and the matrix is wholly or partly formed by chemical vapor infiltration.

7. The method of claim 6, wherein a first portion of the matrix is formed by chemical vapor infiltration, and wherein a second portion of the matrix is then formed by infiltration of molten silicon or a silicon alloy.

8. Method according to any one of claims 1 to 5, in which the part is made of organic matrix composite material and the densification comprises an introduction of a resin into the porosity of the shaped blank followed by a hardening of this resin. œ

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