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Preparation method for high-speed train ceramic matrix composite material friction pair

A technology of friction duality and composite materials, which is applied to friction linings, mechanical equipment, gear transmission mechanisms, etc., can solve the problems of high vibration frequency, high brake temperature, high friction coefficient, etc., to reduce vibration frequency, reduce friction coefficient, reduce The effect of maximum temperature

Inactive Publication Date: 2018-06-22
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: in order to overcome the problems of high friction coefficient, high brake temperature and high vibration frequency in the high-speed train brake disc and brake pad friction pair made of carbon / ceramic composite materials, the present invention proposes a high-speed Preparation method of train ceramic matrix composite friction couple

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment is a method for preparing a frictional couple of a ceramic matrix composite material for a high-speed train. The high-speed train ceramic matrix composite material is a frictional dual brake disc and a brake pad.

[0024] In this implementation case, ceramic matrix composite materials are used to prepare high-speed train frictional couples. The specific steps are as follows:

[0025] Step 1, preform heat treatment.

[0026] Put the prefabricated body of the brake disc friction plate and the prefabricated body of the brake pad friction block in a high-temperature heat treatment furnace for heat treatment. The heat treatment temperature is 2000° C. and the holding time is 4 hours.

[0027] Step 2, blank pre-deposition.

[0028] The prefabricated body of the brake disc friction lining and the prefabricated body of the brake pad friction block that have undergone high-temperature heat treatment are placed in a chemical vapor deposition furnace for pre-depo...

Embodiment 2

[0040] This embodiment is a method for preparing a frictional couple of a ceramic matrix composite material for a high-speed train. The high-speed train ceramic matrix composite material is a frictional dual brake disc and a brake pad.

[0041] In this implementation case, ceramic matrix composite materials are used to prepare high-speed train frictional couples. The specific steps are as follows:

[0042] Step 1, preform heat treatment.

[0043] Put the prefabricated body of the brake disc friction plate and the prefabricated body of the brake pad friction block in a high-temperature heat treatment furnace for heat treatment. The heat treatment temperature is 2000° C. and the holding time is 4 hours.

[0044] Step 2, blank pre-deposition.

[0045] The prefabricated body of the brake disc friction lining and the prefabricated body of the brake pad friction block that have undergone high-temperature heat treatment are placed in a chemical vapor deposition furnace for pre-depo...

Embodiment 3

[0057] This embodiment is a method for preparing a frictional couple of a ceramic matrix composite material for a high-speed train. The high-speed train ceramic matrix composite material is a frictional dual brake disc and a brake pad.

[0058] In this implementation case, ceramic matrix composite materials are used to prepare high-speed train frictional couples. The specific steps are as follows:

[0059] Step 1, preform heat treatment.

[0060] Put the prefabricated body of the brake disc friction plate and the prefabricated body of the brake pad friction block in a high-temperature heat treatment furnace for heat treatment. The heat treatment temperature is 2000° C. and the holding time is 4 hours.

[0061] Step 2, blank pre-deposition.

[0062] The prefabricated body of the brake disc friction lining and the prefabricated body of the brake pad friction block that have undergone high-temperature heat treatment are placed in a chemical vapor deposition furnace for pre-depo...

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Abstract

The invention belongs to the field of high-speed train braking devices, and relates to a preparation method for a high-speed train ceramic matrix composite material friction pair. The method comprisesthe following steps: step 1, heat treatment of a preform; step 2, pre-deposition of a blank; step 3, deposition of the blank; step 4, heat treatment; step 5, mechanical processing; step 6, modification treatment; and step 7, finish machining. The high-speed train ceramic matrix composite material friction pair prepared by adopting the method provided by the invention can effectively reduce the friction coefficient of a brake disc and brake lining of a high-speed train, reduce the instantaneous maximum temperature of braking, and reduce the vibration frequency of the friction pair.

Description

technical field [0001] The invention belongs to the field of braking devices for high-speed trains, and relates to a method for preparing a frictional couple of ceramic-based composite materials for high-speed trains. technical background [0002] At present, the brake disc friction plate of the brake device friction pair commonly used in high-speed trains is made of cast steel, and the brake pad friction block is made of powder metallurgy material. The requirement of 350km / h, but with the rapid development of the high-speed railway field, there are higher requirements for the braking device of high-speed trains, which not only require the braking device to meet the braking requirements of higher operating speeds, but also require the braking device to achieve further reduction Heavy purpose, and the braking performance is smoother and more reliable. Compared with powder metallurgy materials, the new generation of carbon-based composite brake materials has a higher service ...

Claims

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Application Information

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IPC IPC(8): C04B41/00C04B41/89F16D69/00
CPCC04B41/0072C04B41/52C04B41/89F16D69/00F16D2200/0082C04B41/4531C04B41/4545C04B41/5035C04B41/5144
Inventor 杜淑娣周蕊薛亮张艳萍韩文静
Owner XIAN AVIATION BRAKE TECH
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