Ultralow-friction composite brake shoe for European freight train

A technology for synthesizing brake shoes and friction bodies, which is applied in the direction of friction linings, other chemical processes, chemical instruments and methods, etc., can solve the problems of easy sparks and noise, wheel and rail damage, and inconvenient installation of cast iron brake shoes. Achieve the effects of reducing labor costs, reducing braking noise, and comfortable braking experience

Active Publication Date: 2019-05-10
北京浦然轨道交通科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Cast iron brake shoes contain a large amount of phosphorus, which has caused great harm to the environment during use
[0005] 2. The cast iron brake shoe is heavy and inconvenient to install
[0006] 3. The casting process used by it consumes high energy and causes great environmental pollution
[0007] 4. During the use of cast iron brake shoes, it is easy to produce wheel scratches, causing damage to wheels and rails
[0008] 5. Sparks and noise are easy to be generated during the braking process of cast iron brake shoes

Method used

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  • Ultralow-friction composite brake shoe for European freight train
  • Ultralow-friction composite brake shoe for European freight train
  • Ultralow-friction composite brake shoe for European freight train

Examples

Experimental program
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Embodiment 1

[0054] formula:

[0055] The content of each component can be: butadiene rubber: 4%, steel fiber 6%, acrylic fiber: 1.5%, aramid fiber: 2.5%, liquid butadiene rubber: 6%, phenolic resin: 24%, graphite: 29%, mica powder: 6%, barium sulfate: 5%, alumina: 2%, iron powder: 2%, calcium carbonate: 4%, vulcanization accelerator: 1.5%, wollastonite: 3.5%, stearic acid Calcium 3%.

[0056] Mixing:

[0057] Put the butadiene rubber and steel fiber into the internal mixer and mix for 2 minutes at a temperature of 22°C;

[0058] Put acrylic fibers and aramid fibers into the internal mixer and continue mixing for 2 minutes at a temperature of 23°C;

[0059] Put phenolic resin, graphite, mica powder, barium sulfate, liquid butadiene rubber, aluminum oxide, iron powder, calcium carbonate, wollastonite, and calcium stearate into the internal mixer and continue mixing for 4 minutes at a temperature of 65°C;

[0060]Put the vulcanization accelerator into the internal mixer and continue to m...

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Abstract

The invention aims to provide a composite brake shoe with the ultralow friction coefficient. The composite brake shoe can replace a cast iron brake shoe. The composite brake shoe comprises a frictionbody and a steel back. The friction body sequentially comprises, by mass percentage, 4%-8% of butadiene rubber, 4%-10% of steel fibers, 1.5%-3% of acrylic fibers, 1.5%-3% of aramid fibers, 4%-8% of liquid butadiene rubber, 18%-25% of modified phenolic resin, 20%-30% of graphite, 2%-6% of mica powder, 2%-5% of barium sulfate, 0.5%-2% of aluminum oxide, 1%-3% of iron powder, 3%-6% of calcium carbonate, 1%-2% of vulcanization accelerators and 5%-15% of other filling materials. The composite brake shoe has the ultralow friction coefficient, can fulfill the braking function instead of the cast ironbrake shoe under the condition that a braking unit is not changed, and reduces the pollution, caused by chemical components in the wear debris, to the environment.

Description

technical field [0001] The invention relates to a braking device for European trucks, in particular to an ultra-low friction coefficient synthetic brake shoe for European trucks with a friction coefficient of 0.08-0.12. Background technique [0002] Most countries in Europe use the UIC standard issued by the European Union of Railways. The maximum weight of a carriage used by the trucks used is 90t, and the maximum operating speed is 120km / h. Most of the brake shoes currently used are cast iron brake shoes. [0003] The characteristics of cast iron brake shoes are as follows: [0004] 1. Cast iron brake shoes contain a large amount of phosphorus, which has caused great harm to the environment during use. [0005] 2. The cast iron brake shoe is heavy and inconvenient to install. [0006] 3. The casting process it adopts consumes high energy and causes great environmental pollution. [0007] 4. During the use of cast iron brake shoes, it is very easy to produce wheel scratc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/04F16D69/02B29C43/18B29C43/58C09K3/14
Inventor 宋呈威黄福然
Owner 北京浦然轨道交通科技股份有限公司
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