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Grinder for rail vehicle and preparation method thereof

A grinding wheel, mass percentage technology, applied in the field of rail vehicle grinding wheel and its preparation, can solve the problems of shortening the life of the wheel, prone to polygons on the wheel, increasing the adhesion coefficient, etc., to improve comfort and safety, and avoid peeling phenomenon , the effect of increasing the adhesion coefficient

Active Publication Date: 2021-01-01
长春昌博众邦轨道交通科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of high-speed EMUs, the current speed has reached more than 350 kilometers, and there are higher design requirements for the safety and comfort of EMUs. Polygonal phenomenon (out of roundness) and capillary cracks, the current solution to the above problems is to repair them by lathe turning, which will shorten the life of the wheel
[0003] However, the function of the existing abrasives is mainly to remove dust, rust, grease, etc. attached to the wheel treads, and to increase the adhesion coefficient, which is not ideal for improving the safety, comfort and wheel life of the EMU.
[0004] The existing grinder has a single function and can only remove dust, rust, and grease attached to the wheel tread. With the operation of the EMU, the wheel tread and the rail contact for a long time to produce polygons and cannot be repaired in time. Can not meet the safe operation and comfort requirements of high-speed rail

Method used

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  • Grinder for rail vehicle and preparation method thereof

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Effect test

Embodiment Construction

[0039] The present invention will be described below with reference to specific examples. Those skilled in the art can understand that these examples are only used to illustrate the present invention and do not limit the scope of the present invention in any way.

[0040] The experimental methods in the following examples are conventional methods unless otherwise specified. The raw materials and reagent materials used in the following examples are all commercially available products unless otherwise specified.

[0041] In the following examples, the national standards on which the determination method of each performance parameter is based are specifically as follows:

[0042] The preparation method of grinder of the present invention:

[0043](1) Mix phenolic resin, potassium feldspar, barium sulfate, graphite, silica fume cotton, copper fiber, iron powder, alumina and sepiolite in proportion for 30 minutes;

[0044] (2) Bake the mixture obtained in step (1) at 100°C for 1...

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Abstract

The invention provides an abrasive block for rail vehicles and a preparation method thereof. The abrasive block includes the raw materials: phenolic resin, potassium feldspar, barium sulfate, graphite, wollastonite, copper fibers, iron powder, alumina and sepiolite; by adjusting the composition and content of the abrasive block, the abrasive block functions of repairing wheel tread defects and out-of-roundness (namely polygon) are realized, and the fatigue state and hairline cracks of a wheel surface can be eliminated in time, so a stripping phenomenon on the wheel surface is avoided and high-frequency vibration between wheels and rails is eliminated.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a grinding wheel for rail vehicles and a preparation method thereof. Background technique [0002] With the development of high-speed EMUs, the current speed has reached more than 350 kilometers, and there are higher design requirements for the safety and comfort of EMUs. Polygonal phenomenon (out of roundness) and capillary cracks, the current solution to the above problems is to repair them by lathe turning, which will shorten the life of the wheel. [0003] And the effect of existing grinder is mainly to remove the dust, rust, grease etc. attached to the wheel tread, and increase the adhesion coefficient, which is not very ideal for improving the safety, comfort and wheel life of the EMU. [0004] The existing grinder has a single function and can only remove dust, rust, and grease attached to the wheel tread. With the operation of the EMU, the wheel tread and the rail co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/06C08K13/04C08K7/06C08K3/22C08K3/08C08K3/34C08K3/04C08K3/30B60S1/68C09K3/14
CPCB60S1/68C08K3/04C08K3/08C08K3/22C08K3/30C08K3/34C08K7/06C08K13/04C08K2003/0856C08K2003/2227C08K2003/3045C08K2201/005C08K2201/014C09K3/1436C08L61/06
Inventor 刘广彬
Owner 长春昌博众邦轨道交通科技有限公司
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