Ceramic matrix composite inner cone and processing method thereof

Abstract

The invention relates to a ceramic matrix composite inner cone and a processing method thereof so as to solve the problems that a process for preparing an inner cone through a ceramic matrix compositeaccording to a traditional design scheme is difficult to realize, the structural strength can hardly meet requirements, and the assembly difficulty with a mounting seat is high. The inner cone comprises an upper conical face, a lower conical face, an inner conical face and a surrounding component, the upper conical face is in butt joint with the lower conical face, the butt joint position is located on the outer side of the upper end of the inner conical face, the lower end of the inner conical face extends outwards, the outer edge of the lower end of the inner conical face corresponds to theouter edge of the lower end of the lower conical face, the upper side and the lower side of the surrounding component are connected with the outer edge of the lower end of the lower conical face andthe outer edge of the lower end of the inner conical face correspondingly, and multiple bolt mounting holes are circumferentially formed in the lower end of the inner conical face. The processing method of the inner cone comprises the steps that (1) the upper conical face, the lower conical face, the inner conical face and the surrounding component are processed by using the ceramic matrix composite; and (2) the outer side of the inner conical face is sleeved with the upper conical face and the lower conical face, the surrounding component is mounted between the lower conical face and the inner conical face, and fixing is achieved by adopting an online rivet welding technology.

Description

technical field [0001] The invention relates to a ceramic matrix composite material inner cone and a processing method thereof. Background technique [0002] The inner cone is an important part of the afterburner diffuser of the aero-engine. Its main function is to promote the sudden diffusion of the gas entering the afterburner to form a recirculation zone. This structure is easy to afterburner and is conducive to the stable combustion of gas. . The inner cone is located in the high temperature zone of the afterburner, and to realize its own function, its material must have the characteristics of high temperature resistance, long life and light weight. Since the high temperature resistance of existing metal materials can no longer meet this requirement, ceramic matrix composites are a new type of thermal structure / function integrated material with low density, high temperature resistance, high specific strength, high specific modulus, and oxidation resistance. , anti-abla...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that it is difficult to realize the process of preparing the inner cone of the ceramic matrix composite material according to the traditional design scheme, the structural strength is difficult to meet the requirements, and it is difficult to assemble with the mounting seat, and a ceramic matrix composite material inner cone is provided. Cone and its processing method

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