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High-performance SiC ceramic-based composite material aero-engine blade manufacturing method

An aero-engine and composite material technology, which is applied in the field of complex parts manufacturing of ceramic matrix composite materials, can solve the problems of limited use temperature of superalloys, high density, restricting the performance of aero-engines, etc., and achieves the effect of improving bonding strength and preventing reaction.

Active Publication Date: 2015-04-22
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally used superalloys have limited service temperature and high density (8.03-8.06g / cm 3 ), restricting the further improvement of aero-engine performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing a high-performance SiC ceramic matrix composite material aeroengine blade, comprising the following steps:

[0037] 1. Design and manufacture of aero-engine blade negative mold

[0038]1.1 Use 3D modeling software (UG, ProE, etc.) to build a 3D prototype of an aero-engine blade, then shell the prototype (the thickness of the shell is 0.5-1.0mm) to get the blade mold, export it to stl format, and then import it into the In the layer software Magics, the blade mold model is layered.

[0039] 1.2 Import the Magics processing data into the RP manufacturing program of the light-curing rapid prototyping machine (SPS600), start the program, and complete the manufacture of the blade light-curing resin mold. Scanning parameters: the spot size is 0.14mm, the laser power is 300mw, the scanning speed is 5500mm / s, and the layer thickness is 0.1mm.

[0040] 2. Preparation of Slurry

[0041] 2.1 Preparation of master mix

[0042] The organic monomer acrylami...

Embodiment 2

[0061] A method for preparing a high-performance SiC ceramic matrix composite material aeroengine blade, comprising the following steps:

[0062] 1. Same as Step 1 of Example 1;

[0063] 2. Preparation of slurry

[0064] 2.1. Same as Step 2.1 of Example 1

[0065] 2.2. Same as Step 2.2 of Example 1

[0066] 2.3. Mix them according to the volume ratio of loose monofilament short carbon fibers with PCS coating: premix solution = (5-15): 45, and perform ultrasonic dispersion for 5 minutes. Then add graphite, silicon powder and SiC powder into the dispersed premix with the volume of graphite: silicon powder: SiC: premix = 6:14: (20-30): 45, and then add 0.5-2wt of the entire solid phase component % sodium polyacrylate as a dispersant. Then put the slurry into a mechanical stirrer and stir, the stirring time is set at 20-45min, and finally obtain the SiC suspension slurry with uniformly dispersed solid phase particles. The graphite particle size is 15-25um, the Si powder parti...

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Abstract

The invention discloses a high-performance SiC ceramic-based composite material aero-engine blade manufacturing method. According to the invention, an aero-engine blade mold is prepared with a 3D printing technology; with a gel injection molding method, a SiC ceramic blank part with added carbon fiber is prepared; through processes such as freeze-drying and degreasing, a porous SiC ceramic preform is obtained; the preform is subjected to organic matter precursor impregnation cracking several times, and the pores of the preform are filled with a cracking product, such that preliminary compactness is achieved; and for ensuring the strength and compactness of the part, with a thermal isostatic pressing method, the high-performance SiC ceramic-based composite material aero-engine blade is manufactured. According to the method, various near-net-shape forming methods are combined, such that defects of difficult processing of the SiC material are overcome. Compared with traditional alloy blades, the SiC ceramic-based composite material aero-engine blade has the advantages of light mass and high-temperature resistance. The blade is a development trend of future aero-engine blades.

Description

【Technical field】 [0001] The invention belongs to the technical field of manufacturing complex parts of ceramic matrix composite materials, and relates to a method for manufacturing high-performance SiC ceramic matrix composite material aeroengine blades. 【Background technique】 [0002] Blades are the key components of aero-engines. In order to continuously improve the overall performance of aero-engines, it is necessary to increase the gas temperature of aero-engines, which requires the blades to have a high enough heat-bearing capacity. Traditionally used superalloys have limited service temperature and high density (8.03-8.06g / cm 3 ), restricting the further improvement of aero-engine performance. 【Content of invention】 [0003] The purpose of the present invention is to provide a method for manufacturing high-performance SiC ceramic matrix composite aeroengine blades. The method is based on 3D printing technology and produces high-performance SiC ceramic matrix compos...

Claims

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Application Information

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IPC IPC(8): C04B35/565C04B35/622
CPCC04B2235/6026
Inventor 鲁中良曹继伟白树钊李涤尘卢秉恒
Owner XI AN JIAOTONG UNIV
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