Composite material stator blade of an engine and preparation method thereof

Abstract

The invention discloses a composite stator blade of an engine and a preparation method of the composite stator blade. The stator blade comprises a blade body prepared from a piece of presoaked carbon cloth, an upper margin plate, a lower margin plate, a skin, a front edge nickel coverage edge and a metal lining, wherein a mounting hole connected with a case of the engine is formed in the upper margin plate; the skin prepared from a piece of presoaked glass cloth wraps the blade body, the upper flange plate, the lower flange plate and the mounting hole; the front edge nickel coverage edge is glued and fixed at the front edge part of the blade body; the metal lining is embedded into the mounting hole of the upper margin plate. The composite stator blade is high in specific intensity, high in rigidity, high in high temperature capacity, light in weight, high in impact resistance and high in pressure resistance, so that the efficiency of the engine is greatly improved, and the oil consumption of the engine is reduced. According to the method, by adoption of a mode of parting module laying, integrated die pressing and stage-by-stage solidification, a die closing clearance can be well controlled, the structural completeness of the product is guaranteed, the requirement on the design size is met, and the problems of interlayer sliding of laid layers and zigzag wrinkling of the cloth layers are solved.

Description

technical field [0001] The invention relates to a composite material stator blade of an engine and a preparation method thereof. Background technique [0002] The stator blades of existing engines are all made of metal materials, such as stainless steel 1Cr11Ni2W2MoV, nickel alloy and titanium alloy, and are completed by milling, punching, rough rolling, heat treatment, polishing, finish rolling, heat treatment and cutting again. . Although stainless steel 1Cr11Ni2W2MoV, nickel alloy and titanium alloy still have room to further improve their strength, stiffness and high temperature resistance, their development potential is limited, and it is difficult to meet the more stringent temperature and weight requirements of future aero engines. With the continuous improvement of aero-engine performance, especially the continuous reduction in weight, it will increasingly rely on advanced materials with high specific strength, low density, high stiffness and high temperature resist...

AI Technical Summary

Problems solved by technology

Although stainless steel 1Cr11Ni2W2MoV, nickel alloys and titanium alloys still have room to further improve their strength, stiffness and high temperature resistance, their development potential is limited, and it is difficult to meet the more stringent temperature and weight requirements of future aero engines

With the continuous improvement of aero-engine performance, especially the continuous reduction in weight, it will increasingly rely on advanced materials with high specific strength, low density, high stiffness and high temperature resistance: such as pre-impregnated carbon cloth and pre-impregnated glass cloth Composite materials, because the composite materials of pre-impregnated carbon cloth and pre-impregnated glass cloth are completely different from the structure of tangible traditional metal materials, so there is no stator blade made of composite materials such as pre-impregnated carbon cloth and pre-impregnated glass cloth.

And because the impact resistance and compression resistance of the composite material of pre-impregnated carbon cloth and pre-impregnated glass cloth are smaller than those of nickel alloy and titanium alloy materials, if the composite material of pre-impregnated carbon cloth and pre-impregnated glass cloth is used The stator blades are easy to cause damage to the blades under the air flow, especially the leading edge of the blades. The blade mounting holes are easy to wear, the hole position becomes larger, and the installation fixation is poor.

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