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US 11,117,287 B2Granted
Method of impregnating a fiber texture of hollow shape
AssigneesSafran Aircraft Engines, Safran
InventorsThierry Godon, Michaël Podgorski
Life of this patent
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Abstract
A method of impregnating a fiber texture of hollow shape, the method including introducing a first suspension containing a first powder of solid particles of ceramic or carbon material into an inside volume defined by an inside face of a fiber texture of hollow shape placed in a mold, an outer face of the fiber texture being presented facing a wall of the mold; and using the action of centrifugal force to impregnate the fiber texture with the first suspension by causing the mold to rotate and varying the speed of rotation of the mold during the impregnation of the texture with the first suspension.
Claims13
A method of impregnating a fiber texture of hollow shape, the method comprising:
- introducing a first suspension containing a first powder of solid particles of ceramic or carbon material, into an inside volume defined by an inside face of a fiber texture of hollow shape placed in a mold, an outer face of the fiber texture being presented facing a wall of the mold, wherein the first suspension is introduced into the inside volume by spraying through orifices of a spray device, and wherein the spray device has regions wherein the orifices are present at different densities;
- and
- using the action of centrifugal force to impregnate the fiber texture with the first suspension by causing the mold to rotate and varying the speed of rotation of the mold during the impregnation of the fiber texture with the first suspension,
- wherein the fiber texture is of frustoconical shape and extends from a first distal end to a second distal end, the first distal end defining a first opening that is larger than a second opening defined by the second distal end, the fiber texture tapering continuously from the first distal end to the second distal end,
- wherein the fiber texture is impregnated with the first suspension by initially imparting a first constant speed of rotation to the mold and then impregnation with the first suspension is continued by subsequently imparting a second constant speed of rotation to the mold, the second constant speed of rotation being different from the first constant speed of rotation,
- wherein the first constant speed of rotation is higher than the second constant speed of rotation,
- wherein during impregnation of the fiber texture with the first suspension, the speed of rotation of the mold is reduced from the first constant speed of rotation to the second constant speed of rotation without stopping the mold, and
- wherein a duration during which the first constant speed of rotation is imparted is different from a duration during which the second constant speed of rotation is imparted.
5 more elements
A method of impregnating a fiber texture of hollow shape, the method comprising:
- introducing a first suspension containing a first powder of solid particles of ceramic or carbon material, into an inside volume defined by an inside face of a fiber texture of hollow shape placed in a mold, an outer face of the fiber texture being presented facing a wall of the mold, the fiber texture being of frustoconical shape;
- and
- using the action of centrifugal force to impregnate the fiber texture with the first suspension by causing the mold to rotate and varying the speed of rotation of the mold during the impregnation of the fiber texture with the first suspension,
- wherein the fiber texture is impregnated with the first suspension by initially imparting a first constant speed of rotation to the mold and then subsequently imparting a second constant speed of rotation to the mold, the second constant speed of rotation being different from the first constant speed of rotation,
- wherein the fiber texture that is of frustoconical shape extends from a first distal end to a second distal end, the first distal end defining a first opening that is larger than a second opening defined by the second distal end, the fiber texture tapering continuously from the first distal end to the second distal end,
- wherein the first constant speed of rotation is higher than the second constant speed of rotation,
- wherein during impregnation of the fiber texture with the first suspension, the speed of rotation of the mold is reduced from the first constant speed of rotation to the second constant speed of rotation without stopping the mold, and
- wherein a duration during which the first constant speed of rotation is imparted is different from a duration during which the second constant speed of rotation is imparted.
5 more elements
Dependencies are inferred from the claim text.