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Preparation method of carbon-ceramic brake disc

A technology of brake discs and carbon ceramics, applied in mechanical equipment, friction linings, etc., can solve the problems of high material hardness, increased cost of brake discs, tool loss, etc., and achieve the goal of simplifying the processing process, shortening the processing cycle, and reducing production costs Effect

Active Publication Date: 2019-11-22
山东道普安制动材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high hardness of carbon-ceramic brake materials leads to time-consuming processing, serious tool loss, and extremely high processing costs.
In addition, post-processing belongs to subtractive manufacturing, resulting in reduced material utilization and increased brake disc costs

Method used

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  • Preparation method of carbon-ceramic brake disc
  • Preparation method of carbon-ceramic brake disc
  • Preparation method of carbon-ceramic brake disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing a carbon-ceramic brake disc, comprising the following steps:

[0037] (1) Preparation of carbon fiber preform

[0038] Use Toray T700-12K carbon fiber bundles to prepare unidirectional non-woven fabrics and short-fiber mesh tires, and then perform circular layup according to 0° non-woven fabrics, short-fiber mesh tires, and 90° non-woven fabrics to 1cm, then acupuncture, and then Repeat the above steps to prepare a carbon fiber preform with a size of 40cm*40cm*3cm, and ensure that the density of the carbon fiber preform is 0.45g / cm 3 , 14-16 layers / cm.

[0039] (2) Preparation of C / C composites by chemical vapor deposition

[0040] Put the carbon fiber preform into a CVI furnace for isothermal and isobaric chemical vapor deposition. The deposition temperature is 1100°C. The deposition gas is natural gas and ethylene. The natural gas flow rate is 80 SLM, the ethylene gas is 40 SLM, and the deposition time is 340 hours. The density can be obtained...

Embodiment 2

[0048] A method for preparing a carbon-ceramic brake disc, comprising the following steps:

[0049] (1) Preparation of carbon fiber preform

[0050] Use Toray T700-12K carbon fiber bundles to prepare unidirectional non-woven fabrics and short-fiber mesh tires, and then perform circular layup according to 0° non-woven fabrics, short-fiber mesh tires, and 90° non-woven fabrics to 1cm, then acupuncture, and then Repeat the above steps to prepare a carbon fiber preform with a size of 40cm*40cm*3cm, and ensure that the density of the carbon fiber preform is 0.45g / cm 3 , 14-16 layers / cm.

[0051] (2) Preparation of C / C composites by chemical vapor deposition

[0052]Put the carbon fiber prefabricated body into a CVI furnace for chemical vapor deposition. The deposition temperature is 1100°C. The deposition gas is natural gas and ethylene. The flow rate of natural gas is 80SLM, ethylene gas is 40SLM, and the deposition time is 340h. The density is 1.40g / cm 3 C / C composites.

[...

Embodiment 3

[0060] A method for preparing a carbon-ceramic brake disc, comprising the following steps:

[0061] (1) Preparation of carbon fiber preform

[0062] Use Toray T700-12K carbon fiber bundles to prepare unidirectional non-woven fabrics and short-fiber mesh tires, and then perform circular layup according to 0° non-woven fabrics, short-fiber mesh tires, and 90° non-woven fabrics to 1cm, then acupuncture, and then Repeat the above steps to prepare a carbon fiber preform with a size of 40cm*40cm*3cm, and ensure that the density of the carbon fiber preform is 0.45g / cm 3 , 14-16 layers / cm.

[0063] (2) Preparation of C / C composites by chemical vapor deposition

[0064] Put the carbon fiber preform into a CVI furnace for chemical vapor deposition. The deposition temperature is 1100°C. The deposition gas is natural gas and ethylene. The natural gas flow rate is 80SLM, the ethylene gas is 40SLM, and the deposition time is 340h. The density is 1.4g / cm 3 C / C composites.

[0065] (3) ...

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Abstract

The invention relates to a preparation method of a carbon-ceramic brake disc. The preparation method comprises the following specific steps: preparing a carbon fiber preform; carrying out chemical vapor deposition on the preform to prepare a C / C composite material; processing the C / C composite material into unit modules; bonding to prepare a C / C brake disc; and preparing the carbon-ceramic brake disc through reactive melt permeation. By means of the method, the material utilization rate can be increased, waste and loss of materials for machining the carbon / ceramic brake disc are avoided, the machining time is shortened, and therefore the production cost of the carbon / ceramic brake disc is greatly reduced.

Description

technical field [0001] The invention relates to a method for preparing a carbon fiber toughened ceramic matrix (abbreviated as carbon ceramic) brake disc, in particular to the preparation of a carbon fiber toughened SiC matrix brake disc, which belongs to the field of carbon ceramic composite material braking. Background technique [0002] Carbon fiber toughened SiC matrix (C f / SiC) friction material has the advantages of low density, wear resistance, high friction coefficient, and no thermal decay. Compared with traditional metal or semi-metal friction materials, C f / SiC has the advantages of low density, high temperature resistance, small wear, stable friction performance, excellent oxidation resistance, and friction performance is not sensitive to the external environment (oil, moisture, sea water, etc.). Currently, C f / SiC has become a key research direction of lightweight, high braking efficiency, and all-environment service friction materials, and is recognized a...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/573C04B35/622F16D69/02
CPCC04B35/573C04B35/622F16D69/02C04B2235/5256C04B2235/616C04B2235/96C04B2235/3826C04B2235/428C04B2235/5248
Inventor 刘汝强杨川李宗乐何留阳
Owner 山东道普安制动材料有限公司
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