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Preparation method of high-speed train carbon/ceramic composite material friction couple

A ceramic composite material, friction dual technology, applied in the direction of friction linings, brake discs, mechanical equipment, etc., can solve the requirements of the performance difference between high-speed train brake discs and brake pads, poor friction and wear performance, shorten the dual parts life and other issues, to improve stability and service life, reduce weight, and solve the effect of high temperature bonding

Active Publication Date: 2015-10-21
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the shortcomings existing in the prior art that cannot meet the requirements of performance differences between high-speed train brake discs and brake pads, or have poor friction and wear performance, and shorten the life of the counterpart due to poor matching, the present invention proposes a Preparation method of carbon / ceramic composite material friction couple for high-speed trains

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  • Preparation method of high-speed train carbon/ceramic composite material friction couple
  • Preparation method of high-speed train carbon/ceramic composite material friction couple
  • Preparation method of high-speed train carbon/ceramic composite material friction couple

Examples

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Embodiment 1

[0024] This embodiment is a method for preparing a high-speed train carbon / ceramic friction couple. The high-speed train carbon / ceramic friction couple includes brake discs and brake pads.

[0025] In this example, a carbon / ceramic composite material is used to prepare a frictional couple of a high-speed train, and the specific steps are as follows:

[0026] Step 1, preform heat treatment. Place the prefabricated body of the brake disc friction plate and the prefabricated body of the brake pad friction block in a heat treatment furnace, and perform heat treatment to remove the glue by conventional methods. The heat treatment temperature is 1600 ° C, and the holding time is 4 hours.

[0027] Step 2, carbon / carbon blank deposition. The brake disc friction plate prefabricated body and the brake pad friction block prefabricated body which have undergone high-temperature heat treatment are respectively placed in a chemical vapor deposition furnace, and deposited according to a co...

Embodiment 2

[0035] This embodiment is a method for preparing a high-speed train carbon / ceramic friction couple.

[0036] In this example, a carbon / ceramic composite material is used to prepare a frictional couple of a high-speed train, and the specific steps are as follows:

[0037] Step 1, preform heat treatment. Place the prefabricated body of the brake disc friction plate and the prefabricated body of the brake pad friction block in a heat treatment furnace, and perform heat treatment to remove the glue by conventional methods. The heat treatment temperature is 1600 ° C, and the holding time is 4 hours.

[0038] Step 2, carbon / carbon blank deposition. The brake disc friction plate prefabricated body and the brake pad friction block prefabricated body which have undergone high-temperature heat treatment are respectively placed in a chemical vapor deposition furnace, and deposited according to a conventional process. The gas source of the brake disc friction plate is propylene gas, the...

Embodiment 3

[0045] This embodiment is a method for preparing a high-speed train carbon / ceramic friction couple.

[0046] In this example, a carbon / ceramic composite material is used to prepare a frictional couple of a high-speed train, and the specific steps are as follows:

[0047] Step 1, preform heat treatment. Place the prefabricated body of the brake disc friction plate and the prefabricated body of the brake pad friction block in a heat treatment furnace, and perform heat treatment to remove the glue by conventional methods. The heat treatment temperature is 1600 ° C, and the holding time is 4 hours.

[0048] Step 2, carbon / carbon blank deposition. Put the brake disc friction plate prefabricated body and the brake pad friction block prefabricated body which have undergone high temperature heat treatment into a chemical vapor deposition furnace respectively, and deposit according to a conventional process. The gas source of the brake disc friction plate is propylene gas, the deposi...

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Abstract

The invention discloses a preparation method of high-speed train carbon / ceramic composite friction pair, the friction pairs in different technical requirements can be respectively prepared by adopting different process parameters through a plurality of heat treatment and fusion siliconing. The carbon / ceramic composite friction brake pad is low in average abrasion, the service life of the high speed train brake device friction pair is improved, and the brake process under high speed is stable. The high-speed train carbon / ceramic composite friction pair prepared by using the method disclosed by the invention is capable of meeting the high-speed train brake requirement more than 300km / h, the high binding problem of the friction pair is effectively solved, the friction performance stability and service life of the friction pair are improved, the weight under the train chassis spring is lightened, and the use energy consumption is reduced.

Description

technical field [0001] The invention belongs to the field of high-speed train braking devices, and in particular relates to a preparation method suitable for frictional pairs of high-speed train braking devices. Background technique [0002] The frictional couple (brake pad and brake disc) of the high-speed train brake device is usually made of cast steel, and the friction block of the brake pad is made of powder metallurgy material. This kind of frictional duality can satisfy the high-speed train braking of 250km / h to 350km / h, but with the increase of braking speed, the instantaneous temperature of the friction interface rises sharply, which often causes bonding and material transfer between the duality due to the melting of the friction material. Reduced service life. At present, there are no reports on the practical application of carbon / ceramic friction couples in high-speed trains. The use of carbon / ceramic friction couples for aircraft brakes has been applied in Chin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/83C04B41/85F16D69/00F16D65/12
Inventor 田广来张晓伟刘海平任金伟
Owner XIAN AVIATION BRAKE TECH
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