Abrasive block for high-speed multiple unit trains and preparation method

A high-speed motor car, composite material technology, applied in the field of grinding, can solve problems such as easy wear and tear, sparks, etc.

Inactive Publication Date: 2018-04-17
上海国由复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the background technology, the present invention provides a grinding wheel for high-speed motor vehicles and a preparation method, aimin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Weighing by weight percentage: phenolic resin 27%, steel fiber 10%, copper aluminum powder 14%, carbon fiber 10%, tungsten carbide 2%, aramid fiber 8.5%, iron oxide black 8.5%, nitrile rubber 8%, accelerator 12%, mix evenly, put into molding equipment.

[0014] Processing technology: pressure 20Mpa, temperature 120°C, first deflation after 10 seconds after pressurization, second deflation after pressure holding for 15 seconds, third deflation after pressure holding for 15 seconds, and pressure holding for 15 minutes to release the mold.

[0015] Curing, 80°C, constant temperature for 1 hour, 95°C, constant temperature for 2 hours, 110°C, constant temperature for 3 hours, temperature 120°C, constant temperature for 4 hours, 165°C for 6 hours.

Embodiment 2

[0017] Weighing by weight percentage: phenolic resin 26%, steel fiber 10%, copper aluminum powder 15%, carbon fiber 11%, tungsten carbide 1.5%, aramid fiber 8.5%, iron oxide black 8%, nitrile rubber 7%, accelerator 13%, mix well, put into molding equipment.

[0018] Processing technology: pressure 20Mpa, temperature 120°C, first deflation after 10 seconds after pressurization, second deflation after pressure holding for 15 seconds, third deflation after pressure holding for 15 seconds, and pressure holding for 15 minutes to release the mold.

[0019] Curing, 80°C, constant temperature for 1 hour, 95°C, constant temperature for 2 hours, 110°C, constant temperature for 3 hours, temperature 120°C, constant temperature for 4 hours, 165°C for 6 hours.

Embodiment 3

[0021] Weighing by weight percentage: phenolic resin 27.5%, steel fiber 9.5%, copper aluminum powder 15.5%, carbon fiber 12%, tungsten carbide 2%, aramid fiber 8.5%, iron oxide black 6%, nitrile rubber 7%, accelerator 12%, mix well, put into molding equipment.

[0022] Processing technology: pressure 20Mpa, temperature 120°C, first deflation after 10 seconds after pressurization, second deflation after pressure holding for 15 seconds, third deflation after pressure holding for 15 seconds, and pressure holding for 15 minutes to release the mold.

[0023] Curing, 80°C, constant temperature for 1 hour, 95°C, constant temperature for 2 hours, 110°C, constant temperature for 3 hours, temperature 120°C, constant temperature for 4 hours, 165°C for 6 hours.

[0024] Based on the above, the present invention has the advantage of avoiding high-temperature stress cracks, thermal cracks, and friction sparks during the use of the grinding wheel by optimizing the composition ratio and proce...

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PUM

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Abstract

The invention discloses an abrasive block for high-speed multiple unit trains. The abrasive block is prepared from a composite material composed of phenolic resin, steel fibers, copper-aluminum powder, carbon fibers, tungsten carbide, aramid fibers, iron oxide black, acrylonitrile-butadiene rubber and accelerant. The invention further provides a method for preparing the abrasive block, which prevents the occurrence of high-temperature stress cracks and hot cracks in the process of using the abrasive block by optimizing the component ratio and a processing technique. Moreover, by adopting an intermittent heating method and multiple times of heat treatment, the problems, such as stripping and easy abrasion, which take place in the process of using abrasive blocks at present are optimized.

Description

technical field [0001] The invention relates to the field of grinding, in particular to a grinding wheel for high-speed trains and a preparation method. Background technique [0002] Due to the increase of the speed of the EMU and the application of high-power disc brakes, the problem of the effective use of the adhesion coefficient between the wheel and the track has become very prominent. It is a part of the tread cleaning device of the EMU and is fixed on the bogie. on the brake caliper bracket. When braking, press the grinder on the tread for cleaning, which ensures that the wheel tread has a good surface condition, and can remove dust, rust, grease, etc. attached to the wheel tread during vehicle driving; at the same time, the grinder In wet conditions such as rain and snow, it has the effect of enhancing the adhesion between the wheel and rail. Usually, the adhesion when using the grinding wheel is 150% of that without using the grinding wheel, so as to ensure that th...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L77/10C08L9/02C08K13/04C08K7/06C08K3/22C08K3/24C08K3/08F16D65/00
CPCC08L61/06C08K2003/0812C08K2003/085C08K2003/2275C08L2205/03C08L2205/16F16D65/0037C08L77/10C08L9/02C08K13/04C08K7/06C08K3/22C08K3/24C08K3/08
Inventor 黄建东
Owner 上海国由复合材料科技有限公司
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