High-friction coefficient composition brake shoe and production method thereof

A technology of high friction coefficient and synthetic brake shoes, which is applied in the direction of friction linings and mechanical equipment, can solve the problems of friction body damage, eccentric wear, poor wear resistance, etc., so as to improve the braking speed limit, ensure driving safety, and reduce wear and tear. The effect of rate reduction

Inactive Publication Date: 2015-10-28
HEBEI XINJI TENGYUE INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the continuous development of railway transportation, the weight and speed of railway freight cars continue to increase, and the braking energy increases accordingly, so the pressure on the brake shoes of railway freight cars increases exponentially, which leads to accelerated wear of the brake shoes of railway freight cars
However, the problems of existing railway freight car brake shoes include: friction body damage, poor wear resistance, eccentric wear, and it is difficult to meet the operation safety of railway freight cars.
[0007] However, the products obtained by the above-mentioned patented technology still cannot obtain satisfactory wear resistance

Method used

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  • High-friction coefficient composition brake shoe and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1 Aramid fiber is added to the preparation of a high friction coefficient synthetic brake shoe. The initial thermal decomposition temperature of the aramid fiber is as high as 500°C, and it does not melt when heated to decomposition. This is particularly important for friction materials. Aramid fiber Reinforced friction material has the following advantages: stable friction coefficient at high and low temperature, low wear; good reinforcement effect, strong impact resistance; low product hardness, low product noise, and no damage to the brake dual.

[0046] (1) Steel back treatment

[0047] 1.1 Hang the qualified high friction coefficient synthetic brake shoe steel back on the shot blasting basket in the shot blasting machine for shot blasting and rust removal.

[0048] 1.2 The steel back with excessive shot blasting deformation is corrected one by one with tooling.

[0049] 1.3 Spray the surface of the steel back corrected by shot blasting and rust removal, and then dr...

Embodiment 2

[0061] Example 2 Aramid fiber is added to the preparation of a high friction coefficient synthetic brake shoe. The initial thermal decomposition temperature of aramid fiber is as high as 500°C, and it does not melt when heated until it is decomposed. This is particularly important for friction materials. Aramid fiber Reinforced friction material has the following advantages: stable friction coefficient at high and low temperature, low wear; good reinforcement effect, strong impact resistance; low product hardness, low product noise, and no damage to the brake dual.

[0062] (1) Steel back treatment

[0063] 1.1 Hang the qualified high friction coefficient synthetic brake shoe steel back on the shot blasting basket in the shot blasting machine for shot blasting and rust removal.

[0064] 1.2 The steel back with excessive shot blasting deformation is corrected one by one with tooling.

[0065] 1.3 Spray the surface of the steel back corrected by shot blasting and rust removal, and...

Embodiment 3

[0074] Example 3 Aramid fiber is added to the preparation of a high friction coefficient synthetic brake shoe. The initial thermal decomposition temperature of the aramid fiber is as high as 500°C, and it does not melt when heated to decomposition. This is particularly important for friction materials. Aramid fiber Reinforced friction material has the following advantages: stable friction coefficient at high and low temperature, low wear; good reinforcement effect, strong impact resistance; low product hardness, low product noise, and no damage to the brake dual.

[0075] (1) Steel back treatment

[0076] 1.1 Hang the qualified high friction coefficient synthetic brake shoe steel back on the shot blasting basket in the shot blasting machine for shot blasting and rust removal.

[0077] 1.2 The steel back with excessive shot blasting deformation is corrected one by one with tooling.

[0078] 1.3 Spray the surface of the steel back corrected by shot blasting and rust removal, and t...

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Abstract

The invention relates to a high-friction coefficient composition brake shoe. The high-friction coefficient composition brake shoe comprises a steel backing and a friction material, the friction material comprises the following raw materials including, by weight, 1-5 parts of aramid fiber, 8-12 parts of butadiene-acrylonitrile rubber, 0.5-1 part of stearic acid, 0.3-1 part of an accelerant, 0.6-1 part of sulphur, 0.5-1 part of zinc oxide, 4-7 parts of phenolic resin, 10-20 parts of inorganic composite fiber, 8-15 parts of iron powder, 10-20 parts of barium sulfate, 7-15 parts of kibdelophane powder, 5-10 parts of steel wool fiber, 1-3 parts of bauxite, 8-15 parts of potassium feldspar powder, 2-5 parts of mica, 2-5 parts of flake graphite, 5-10 parts of sepiolite fiber and 2-5 parts of molybdenum disulfide. By means of the high-friction coefficient composition brake shoe, the change of the speed of the wear rate of the high-friction coefficient composition brake shoe can be basically identical to the change of the adhesion coefficient of a wheel track, the abrasion loss when a vehicle is braked is less, failure can not occur in braking, and the traffic safety is guaranteed. The invention provides a production method of the high-friction coefficient composition brake shoe at the same time.

Description

Technical field [0001] The invention belongs to the technical field of railway vehicles, and specifically relates to a synthetic brake shoe with a high friction coefficient and a production method thereof. Background technique [0002] The high friction coefficient synthetic brake shoe is one of the railway freight car accessories, which belongs to the basic brake device. The basic brake device is composed of left and right brake beams, fixed lever fulcrums, brake shoes, etc. The function of the brake shoe of the railway freight car is to hold the wheel tread tightly during braking, and stop the rotation of the wheel through friction between the friction material and the wheel tread. [0003] With the continuous development of railway transportation, the weight and speed of railway freight cars continue to increase, and the braking energy increases accordingly. As a result, the brake shoe pressure of railway freight cars increases exponentially, which leads to faster brake shoe wea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L77/10C08L61/06C08K13/04C08K5/09C08K3/06C08K3/22C08K7/04C08K3/08C08K3/30C08K3/04C08K7/10F16D69/02
CPCC08L9/02C08L2205/03C08L2205/16F16D69/026C08L77/10C08L61/06C08K13/04C08K5/09C08K3/06C08K2003/2296C08K7/04C08K2003/0856C08K2003/3045C08K3/04C08K7/10
Inventor 许全起满伟方永智
Owner HEBEI XINJI TENGYUE INDAL
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