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Composition brake shoe for urban rail vehicle and manufacturing method thereof

A technology for synthesizing brake shoes and urban rails, applied in the field of transportation, can solve the problems of hot spot friction coefficient, metal inlay, falling too fast, etc., and achieve the effect of reducing friction coefficient, reducing metal inlay, and small heat decay

Active Publication Date: 2013-11-27
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the present invention provides a composite brake shoe for urban rail vehicles and its manufacturing method, which can solve the problems of metal inlay, thermal cracks, hot spots, and rapid drop of friction coefficient of urban rail composite brake shoes under rainy and snowy weather conditions. question

Method used

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  • Composition brake shoe for urban rail vehicle and manufacturing method thereof
  • Composition brake shoe for urban rail vehicle and manufacturing method thereof
  • Composition brake shoe for urban rail vehicle and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The weight of each component of synthetic brake shoes for urban rail vehicles: 300g of nitrile rubber, 600g of cashew nut shell oil modified phenolic resin, 180g of basalt fiber, 240g of carbon fiber, 450g of steel fiber, 150g of sepiolite fiber, hexamethylene tetra 60g of amine, 240g of iron oxide powder, 150g of flake graphite, 210g of chromite, 180g of barium sulfate, 90g of potassium feldspar, and 150g of friction powder.

[0026] making process:

[0027] (1) Ingredients: weigh various powder materials and fiber materials with an electronic scale in strict accordance with the formula requirements, and put them into the mixing cylinder;

[0028] (2) Stirring and mixing: select a plow-type mixer, put the ingredients into it, and after mixing for a specified time, discharge the material from the discharge hole and store it in the storage tank;

[0029] (3) Hot press forming: Put the processed brake shoe steel back into the mold cavity, preheat the mixture to 80°C, pu...

Embodiment 2

[0038] The weight of each component of synthetic brake shoes for urban rail vehicles: 330g of nitrile rubber, 540g of cashew nut shell oil modified phenolic resin, 210g of basalt fiber, 180g of carbon fiber, 390g of steel fiber, 180g of sepiolite fiber, hexamethylene tetra 90g of amine, 210g of iron oxide powder, 180g of flake graphite, 180g of chromite, 210g of barium sulfate, 120g of potassium feldspar, and 180g of friction powder.

[0039] making process:

[0040] (1) Ingredients: weigh various powder materials and fiber materials with an electronic scale in strict accordance with the formula requirements, and put them into the mixing cylinder;

[0041] (2) Stirring and mixing: select a plow-type mixer, put the ingredients into it, and after mixing for a specified time, discharge the material from the discharge hole and store it in the storage tank;

[0042] (3) Hot press forming: Put the processed brake shoe steel back into the mold cavity, preheat the mixture to 80°C, p...

Embodiment 3

[0051] The weight of each component of synthetic brake shoes for urban rail vehicles: 390g of nitrile rubber, 480g of cashew nut shell oil modified phenolic resin, 240g of basalt fiber, 150g of carbon fiber, 270g of steel fiber, 210g of sepiolite fiber, hexamethylene tetra 120g of amine, 180g of iron oxide powder, 180g of flake graphite, 150g of chromite, 240g of barium sulfate, 150g of potassium feldspar, and 180g of friction powder.

[0052] making process:

[0053] (1) Ingredients: weigh various powder materials and fiber materials with an electronic scale in strict accordance with the formula requirements, and put them into the mixing cylinder;

[0054] (2) Stirring and mixing: select a plow-type mixer, put the ingredients into it, and after mixing for a specified time, discharge the material from the discharge hole and store it in the storage tank;

[0055] (3) Hot press forming: Put the processed brake shoe steel back into the mold cavity, preheat the mixture to 80°C, ...

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Abstract

The invention relates to a composition brake shoe for an urban rail vehicle and a manufacturing method of the composition brake shoe for the urban rail vehicle. The composition brake shoe comprises the following components of, by weight, 10-15 parts of butadiene-acrylonitrile rubber, 10-20 parts of cashew nut shell oil modified phenolic resin, 6-10 parts of basalt fibers, 4-8 parts of carbon fibers, 8-15 parts of steel fibers, 5-8 parts of sepiolite fibers, 2-6 parts of hexamethylenetetramine, 5-8 parts of iron oxide powder, 5-7 parts of crystalline flake graphite, 5-7 parts of chromite, 6-9 parts of barium sulfate, 3-6 parts of potassium feldspar and 5-8 parts of frictional powder. The manufacturing method of the composition brake shoe is a dry method production technology, and comprises the steps of steel back production, abrasive blasting processing, shaping, burdening, mixing, hot compacting, heat processing, subsequent processing, finished product forming and inspection. The manufactured composition brake shoe is inspected through the 1:1 rack test, is excellent in friction and abrasion resisting performance, stable in brake performance, safe and environmentally friendly, and solves the problem that the friction coefficient drops too fast under the conditions of damascene of the composition brake shoe for the urban rail vehicle, hot cracks, hot spots and rain and snow weather.

Description

technical field [0001] The invention belongs to the technical field of traffic, and relates to a synthetic brake shoe for urban rail vehicles and a manufacturing method thereof. Background technique [0002] The braking performance of urban rail brake shoes directly affects the safety of urban rail and light rail vehicle operations, and traditional ordinary brake shoe braking materials have been difficult to meet the braking requirements. The main problems of the developed urban rail synthetic brake shoes are: the grooves on the wheel treads are serious, and some have formed steps, and frequent turning repairs are required to ensure the normal use of the vehicles; the wheel treads wear too fast; the noise is too large; wet conditions The lower braking effect is poor, that is, the vehicle overshoots when it enters the station and brakes, exceeding the braking distance. For example, Chinese patents CN 1844204A and CN 1405044A all have a wet friction coefficient less than 0.29...

Claims

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Application Information

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IPC IPC(8): F16D69/02B29C43/18B29C43/32
Inventor 尹彩流王秀飞蓝奇文国富祝金明黄琨
Owner GUANGXI UNIV FOR NATITIES
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