C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 47/04 (2006.01) C22C 47/00 (2006.01) C22C 47/20 (2006.01)
Patent
CA 2729377
The invention relates to a method for producing a metallic part reinforced by ceramic fibres, according to which: at least one recess (10A) for an insert is machined in a metallic body (10) having an upper surface (10B); at least one insert (11) consisting of ceramic fibres in a metallic matrix is arranged in the recess; the insert is covered with a cover; the gap around the insert is placed under a vacuum and hermetically sealed; the entire metallic body with the cover is treated by hot isostatic compaction; and said treated assembly is machined to produce said part. The method is characterised in that the cover comprises an element (12) covering the insert (11) in the groove and projecting past the upper surface, and a film (14) covering the upper surface with said element (12). Especially the insert (11) is rectilinear, and the recess of the insert in the metallic body forms a rectilinear groove.
L'invention porte sur un procédé de fabrication d'une pièce métallique renforcée de fibres céramiques, selon lequel : On usine, dans un corps métallique (10) présentant une face supérieure (10B), au moins un logement (10A) pour un insert, On dispose au moins un insert (11) formé des fibres céramiques dans une matrice métallique dans le logement, On recouvre l'insert d'un couvercle, On met sous vide l'espace interstitiel autour de l'insert et on ferme ledit espace sous vide de manière hermétique, On traite l'ensemble du corps métallique avec couvercle par compaction isostatique à chaud et On usine ledit ensemble traité pour obtenir ladite pièce. Le procédé est caractérisé par le fait que le couvercle comprend un élément (12) recouvrant l'insert (11) dans la rainure et étant en saillie par rapport à la face supérieure, et une feuille (14) recouvrant la face supérieure avec ledit élément (12). En particulier l'insert (11) est rectiligne, et le logement de l'insert dans le corps métallique forme une rainure rectiligne.
Dunleavy Patrick
Masson Richard
Goudreau Gage Dubuc
Messier-Dowty Sa
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