A method for forming a thin-walled conical cylindrical ceramic matrix composite component

A composite material component and forming method technology, which is applied in the forming field of ceramic matrix composite materials, can solve problems such as wrinkles, achieve stable shaping, uniform fiber volume fraction, and ensure the effect of component forming accuracy

Active Publication Date: 2021-03-26
AVIC BASIC TECH RES INST
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason why molding and shaping are not suitable for thin-walled conical and cylindrical components is that the working mode of flat plate pressurization of the molding machine is mostly suitable for the shaping of plate-shaped components; Due to the limitation, there is a certain deviation between the actual size and the design size. When the molding is finalized, the inner and outer surfaces are rigid molds. When the mold is closed, it is easy to produce molding defects such as wrinkles due to the deviation between the size of the preform and the size of the mold cavity.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for forming a thin-walled conical cylindrical ceramic matrix composite component
  • A method for forming a thin-walled conical cylindrical ceramic matrix composite component
  • A method for forming a thin-walled conical cylindrical ceramic matrix composite component

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] 1. Preparation of fiber prefabricated body 1: using continuous fibers (such as carbon fiber, silicon carbide fiber, etc.) as raw materials, weaving and preparing fiber prefabricated body 1 according to the structure, shape and size of the proposed component;

[0028] 2. Design and manufacture of shaping molds: design and manufacture shaping molds according to the structure, shape and size of the components to be formed; including manufacturing the male mold 2 for autoclave forming according to the internal surface of the components, and according to the internal and external shapes of the components Conformal mold 3 in the subsequent densification process of surface manufacturing;

[0029] 3. Preparation of the interface layer: the fiber preform 1 is placed in a chemical vapor deposition furnace to coat the interface layer on the surface of the fiber. The interface layer is composed of pyrolytic carbon, silicon carbide or boron nitride materials. The preparation process...

Embodiment

[0038] A method for forming a thin-walled conical ceramic matrix composite member, the operation steps are as follows:

[0039] 1. Preparation of fiber prefabricated body 1: using continuous silicon carbide fiber as raw material, weaving and preparing fiber prefabricated body 1 according to the structure, shape and size of the simulated component;

[0040] 2. Design and manufacture of shaping molds: design and manufacture shaping molds according to the structure, shape and size of the components to be formed; including manufacturing the male mold 2 for autoclave forming according to the internal surface of the components, and according to the internal and external shapes of the components Conformal mold 3 in the subsequent densification process of surface manufacturing;

[0041] 3. Preparation of the interface layer: the fiber preform 1 is placed in a chemical vapor deposition furnace to coat the interface layer on the surface of the fiber. The interface layer is composed of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a forming method of a ceramic matrix composite, in particular to a forming method of a thin-walled conical cylinder-shaped ceramic matrix composite component. According to theforming method, a combined setting mode of autoclave setting and graphite die shape maintenance is adopted; an autoclave technology is more suitable for formation of a resin matrix composite, the pressure in the autoclave is smaller than 1MPa generally, the temperature in the autoclave is smaller than 300 DEG C generally, and formation is completed once for all. The forming method provided by theinvention can solve the problem of large difficulty in formation of the thin-walled conical cylinder-shaped ceramic matrix composite component; and compared with the existing forming method, the forming method can be used for forming the thin-walled conical cylinder-shaped ceramic matrix composite component with uniform volume fraction of fibers and high contour accuracy. The forming method fullyutilizes the advantage of being suitable for forming the thin-walled conical cylinder-shaped component of the autoclave and the advantages of temperature resistance and stabilization in setting of agraphite die, the component is transferred into the graphite die for shape maintenance after being subjected to setting with the autoclave, and the component forming accuracy in a subsequent high-temperature dense technology is ensured.

Description

technical field [0001] The invention relates to a molding method of a ceramic matrix composite material, in particular to a molding method of a thin-walled conical cylindrical ceramic matrix composite material component. Background technique [0002] Ceramic matrix composites not only have many advantages such as high temperature resistance, oxidation resistance, wear resistance and corrosion resistance of ceramic materials, but also use the reinforcement and toughening effect of continuous fiber and other reinforcements to greatly improve the fracture toughness and external impact load resistance of ceramic materials. performance. Continuous fiber-reinforced silicon carbide ceramic matrix composites are more and more widely used in the fields of high thrust-to-weight ratio aero-engine hot-end components and hypersonic aircraft thermal protection systems due to their good high-temperature stability and high-temperature mechanical properties. [0003] In the manufacturing pr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/80C04B35/565C04B35/622
CPCC04B35/806C04B35/571C04B35/622C04B2235/5244C04B2235/5248C04B2235/614C04B2235/616C04B2235/656C04B2235/658
Inventor 谢巍杰邱海鹏陈明伟刘善华
Owner AVIC BASIC TECH RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap