Method of manufacturing a thermostructural composite material bowl, in particular for an installation that produces silicon single crystals
AssigneeSnecma Moteurs
InventorsJean-Michel Georges, Daniel Benethuiliere, Eric Philippe
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Abstract
A composite material bowl 36 comprising fiber reinforcement densified by a matrix is made by winding a yarn on a preform 28 having an axial passage 30 through its bottom, densifying the preform by chemical vapor infiltration, and closing the passage by a plug 34. Prior to densification, the preform can be consolidated. A final chemical vapor infiltration step can be performed after the plug has been put into place.
Claims48
A method of manufacturing a bowl of thermostructural composite material formed by fiber reinforcement densified by a matrix, the method comprising:
- making a bowl preform by winding a yarn, the preform having an axial passage through its bottom;
- densifying the bowl preform by chemical vapor infiltration;
- closing the passage by means of a plug made of thermostructural composite material;
- and
- performing a final chemical vapor infiltration step after the passage has been closed by the plug, the final chemical vapor infiltration step comprising forming a ceramic matrix phase.
A method of manufacturing a bowl of thermostructural composite material formed by fiber reinforcement densified by a matrix, the method comprising:
- making a bowl preform by winding a yarn, the preform having an axial passage through its bottom, the axial passage having a rim;
- densifying the bowl preform by chemical vapor infiltration;
- and
- closing the passage by means of a plug made of thermostructural composite material, characterized in that the plug has a lip having a shape matching a shape of the rim of the axial passage to interfit with the axial passage and is made in two pieces that are assembled together so as to clamp onto the rim of the axial passage in the preform.
Dependencies are inferred from the claim text.