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Wear-resistant material used on locomotive brake shoe

A technology of wear-resistant materials and braking brakes, which is applied in the field of wear-resistant materials, can solve the problems that the production cost cannot be reduced, and achieve the effect of proper hardness, uniform wear, smooth and soft braking

Inactive Publication Date: 2009-06-03
BENGANG STEEL PLATES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the content of phenolic resin, asbestos and composite fiber is relatively small, which can not reduce the production cost and achieve an ideal friction coefficient. Therefore, there are still some problems in using this material to make brake shoes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Prepare 1000 kg of synthetic brake shoe materials, weigh 180 kg of phenolic resin, 180 kg of sepiolite, 220 kg of reduced iron powder, 50 kg of silica powder, 30 kg of barium sulfate, 130 kg of rubber powder, and 38 kg of feldspar powder. 40 kg of barite powder, 55 kg of heavy calcium powder, 45 kg of coke powder, 3 kg of red iron powder, mix and stir the above materials evenly, pour them into the brake shoe mold with a heating temperature of 200-400 ℃, and then stamp them into shape , then cooled to normal temperature, and finally the synthetic brake shoe was taken out.

Embodiment 2

[0012] Prepare 1000 kg of synthetic brake shoe materials, weigh 210 kg of phenolic resin, 220 kg of sepiolite, 180 kg of reduced iron powder, 46 kg of silica powder, 24 kg of barium sulfate, 102 kg of rubber powder, and 44 kg of feldspar powder. 48 kg of barite powder, 62 kg of heavy calcium powder, 38 kg of coke powder, and 26 kg of red iron powder. After mixing and stirring the above materials evenly, pour them into the brake shoe mold with a heating temperature of 200-400 ℃, and then stamp them into shape. , then cooled to normal temperature, and finally the synthetic brake shoe was taken out.

Embodiment 3

[0014] Prepare 1000 kg of synthetic brake shoe materials, weigh 250 kg of phenolic resin, 260 kg of sepiolite, 150 kg of reduced iron powder, 40 kg of silica powder, 20 kg of barium sulfate, 80 kg of rubber powder, and 40 kg of feldspar powder. 40 kg of barite powder, 70 kg of heavy calcium powder, 30 kg of coke powder, 20 kg of red iron powder, mix and stir the above materials evenly, pour them into the brake shoe mold with a heating temperature of 200-400 ℃, and then stamp them into shape , then cooled to normal temperature, and finally the synthetic brake shoe was taken out.

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PUM

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Abstract

The invention provides a wear-resistant material used on a locomotive brake shoe, which is made of phenolic resin, reduced iron powder, silica flour, barium sulfate, rubber powder, feldspar powder, barite powder, heavy calcium powder, coke powder and rouge. The prices of Sepiolite cashmere, the reduced iron powder and the like in the wear-resistant material are relative low, so that a brake shoe made of the wear-resistant material has a relative low cost, but the service life thereof is more than 7 times of the service life of a cast iron brake shoe; at the same time, no harmful gas polluting the environment is produced during braking; besides, the brake shoe made of the wear-resistant material has proper hardness, and can cause a locomotive to steadily and gently brake; and the brake shoe made of the wear-resistant material is evenly worn, so that even in bad weathers like rain or snow, no phenomenon of brake shoe adhesion occurs.

Description

technical field [0001] The invention relates to a wear-resistant material for locomotive brake shoes. Background technique [0002] Traditional locomotive brake shoes are basically made of cast iron, and the brake friction coefficient of cast iron brake shoes is relatively ideal at room temperature, but the temperature of the locomotive brake shoes rises sharply after the friction between the brake shoes and the wheel set tread during running braking, resulting in the cast iron itself The friction coefficient of the locomotive decreases, and the friction coefficient is only about 0.15 after the heat rises. The reduction of the friction coefficient leads to insufficient braking force, and the braking distance of the locomotive increases, resulting in a decrease in the safety factor of locomotive operation. When the locomotive brakes at high speed, the friction coefficient of the brake shoe itself must be greater than 0.25 to ensure the safe operation of the locomotive. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K3/00C08K3/34C08K3/08F16D69/02
Inventor 王钰刘长禄
Owner BENGANG STEEL PLATES
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