A ceramic matrix composite inner cone and its processing method

Abstract

The invention relates to a ceramic matrix composite material inner cone and a processing method thereof, to solve the problem that the process of preparing the ceramic matrix composite material inner cone according to the traditional design scheme is difficult to realize, the structural strength is difficult to meet the requirements, and the assembly with the mounting seat is difficult. question. The inner cone includes an upper cone surface, a lower cone surface, an inner cone surface, and a surrounding member. The upper cone surface and the lower cone surface are joined, and the butt joint is located outside the end of the inner cone surface, and the lower end of the inner cone surface extends outward. And its outer edge corresponds to the outer edge of the lower end of the lower conical surface, the upper and lower sides of the surrounding member are respectively connected with the outer edge of the lower end of the lower conical surface and the outer edge of the lower end of the inner conical surface, and the lower end of the inner conical surface is circumferentially provided with Multiple bolt mounting holes. The processing method includes: 1) Using ceramic matrix composite materials to process the upper cone surface, lower cone surface, inner cone surface and surrounding member; 2) Set the upper cone surface and the lower cone surface on the outside of the inner cone surface, The shaped member is installed between the lower cone surface and the inner cone surface, and is fixed by online riveting 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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