Method for manufacturing carbon ceramic brake disc

A manufacturing method and a technology for a brake disc, applied in the direction of a brake disc, etc., can solve the problems of difficult processing and uneven Si penetration, and achieve the effects of good depth of Si penetration, uniform Si penetration by reaction melting, and reduced processing difficulty.

Inactive Publication Date: 2011-07-20
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of uneven Si penetration and difficult processing in the thickness direction of the brake disc existing in the prior art, the present invention proposes a manufacturing method of a carbon ceramic brake disc

Method used

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  • Method for manufacturing carbon ceramic brake disc
  • Method for manufacturing carbon ceramic brake disc
  • Method for manufacturing carbon ceramic brake disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment is to manufacture a certain type of aircraft carbon ceramic brake disc-moving disc, and its specific process is as follows:

[0030] Step 1, preparing a carbon fiber green body;

[0031] The specification of the carbon fiber body is Φ312mm×Φ192mm×26mm, and the quantity is 15 pieces. Choose 12K carbon fiber, use latitude-free unidirectional carbon cloth and carbon fiber mesh tire to compound, lay the laminate with the direction of carbon cloth fiber at 0° / 60° / 120°, and form a carbon fiber green body of aircraft carbon ceramic brake disc-moving disc. The paving thickness of the carbon fiber green body is 25mm, and 16 layers / cm are guaranteed, and the bulk density is 0.6g / cm3.

[0032] Step 2, prepare C / C body

[0033] The prepared 15 pieces of carbon fiber blanks of aircraft carbon ceramic brake discs and moving discs were loaded into a CVI furnace for deposition. The deposition temperature was 1020°C. The deposition gas is natural gas and ethane, wher...

Embodiment 2

[0048] This embodiment is to manufacture a certain type of aircraft carbon ceramic brake disc-static disc, and its specific process is as follows:

[0049] Step 1, preparing a carbon fiber green body;

[0050] The specification of the carbon fiber body is Φ312mm×Φ192mm×25mm, and the quantity is 12 pieces. Choose 12K carbon fiber, use latitude-free unidirectional carbon cloth and carbon fiber mesh tire to compound, and lay the laminate in the direction of carbon cloth fiber at 0° / 60° / 120° to form a carbon fiber green body of aircraft carbon ceramic brake disc-stationary disc. The paving thickness of the carbon fiber green body is 20mm, and 15 layers / cm are guaranteed, and the bulk density is 0.6g / cm3.

[0051] Step 2, prepare C / C body

[0052] The prepared 15 pieces of aircraft carbon-ceramic brake disc-stationary disc carbon fiber blanks were loaded into a CVI furnace for deposition. The deposition temperature was 1000°C. The deposition gases are natural gas and ethane, wh...

Embodiment 3

[0067] This embodiment is to manufacture a certain type of aircraft carbon ceramic brake disc-pressing disc, and its specific process is as follows:

[0068] Step 1, preparing a carbon fiber green body;

[0069] Step 1, preparing a carbon fiber green body;

[0070] The specification of the carbon fiber body is Φ312mm×Φ192mm×25mm, and the quantity is 12 pieces. Choose 12K carbon fiber, use latitude-free unidirectional carbon cloth and carbon fiber mesh tire to compound, and lay the laminate in the direction of carbon cloth fiber at 0° / 60° / 120° to form a carbon fiber green body of aircraft carbon ceramic brake disc-stationary disc. The paving thickness of the carbon fiber green body is 15mm, and 14 layers / cm are guaranteed, and the bulk density is 0.6g / cm3.

[0071] Step 2, prepare C / C body

[0072] The prepared 15 pieces of aircraft carbon-ceramic brake disc-stationary disc carbon fiber blanks were loaded into a CVI furnace for deposition. The deposition temperature was 101...

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Abstract

The invention relates to a method for manufacturing a carbon ceramic brake disc, which comprises the following steps of: preparing a carbon fiber blank body, performing natural gas chemical vapor immersion (CVI), graphitizing, machining, making holes, performing a melting reaction and grinding accurately to prepare a carbon ceramic composite brake disc, wherein in the hole making step, a plurality of through holes are distributed on a disc surface of the brake disc fully, and the center line of each through hole is perpendicular to the disc surface of the brake disc. In the method, the through holes distributed on the disc surface of the brake disc fully allows liquid state Si to permeate in the thickness direction of the brake disc uniformly and permeate on the whole friction surface uniformly in a melting Si permeating reaction and ensure the melting Si permeating reaction occurs at an area in the thickness direction intensively and influences the size of the thickness direction only without influencing the size at an area in the radial circumferencial direction basically, so that in the subsequent carbon ceramic machining, the thickness area is machined only. Therefore, the method has the characteristics that the Si permeating depth is desirable; the Si permeation is uniform; and products are easy to machine.

Description

technical field [0001] The invention relates to a method for manufacturing a directional Si carbon ceramic brake disc. Background technique [0002] Carbon-ceramic composite brake material (hereinafter referred to as carbon-ceramic) is a new type of composite material composed of high-strength carbon fiber as reinforcement and pyrolytic carbon and silicon carbide as the matrix. The advantages of metallurgical brake materials and C / C brake materials are integrated, and effectively overcome the shortcomings of the above two materials. It has the advantages of light weight, high specific strength, large specific heat, stable friction performance, stable mechanical properties, etc., especially High impact toughness, strong resistance to seawater and salt spray corrosion. [0003] At present, the main preparation methods of carbon ceramic brake materials are: slurry-hot pressing method, CVI method, LPI method, and reaction infiltration method; but at present, the real engineerin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/12C04B35/83C04B35/622
Inventor 田广来刘海平鲁新锋张晓伟
Owner XIAN AVIATION BRAKE TECH
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