Motor car wheel tread sweeper shape-repair grinding device and preparation method thereof

A tread cleaning and abrasive technology, which is applied in the field of motor vehicle tread cleaner shape modification abrasive and its preparation, can solve the problems of unsatisfactory effect, large wheel damage, and rare development of shape modification abrasive, so as to repair the wheel surface Defects and out of roundness, good effect

Active Publication Date: 2017-09-22
SHANGHAI REINPHEN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Both of the above two patents are reports on viscosifying abrasives. At present, there are many reports on viscosifying abrasives, but the development of modified abrasives is rare. At present, imported and domestic modified abrasives are more harmful to wheels. , large wear, thermal cracks, easy to produce metal inlays and other shortcomings, the effect is not ideal

Method used

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  • Motor car wheel tread sweeper shape-repair grinding device and preparation method thereof
  • Motor car wheel tread sweeper shape-repair grinding device and preparation method thereof
  • Motor car wheel tread sweeper shape-repair grinding device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a shape-modifying grinding wheel for a motor vehicle tread cleaner, comprising the following steps:

[0033] (1) Preparation of raw materials:

[0034]

[0035] (2) Preparation:

[0036] The above-mentioned raw materials are firstly added to the high-speed rake mixer in proportion and step by step, and mixed for 5 minutes. At room temperature of 120°C, the material is placed in the molding mold at a rate of 300kg / cm 2 The stress response is 400 seconds. Then sinter the molded grinding wheel at high temperature, the sintering temperature is 100°C, and the sintering time is 20 hours, and the grinding wheel can be obtained.

[0037] In the present embodiment, epoxy modified phenolic resin is selected as the bonding agent, and magnesium oxide is selected as the modifying aid. The friction coefficient of the grinding wheel obtained in this embodiment is 0.56 (constant speed type), the mass wear rate is 0.08g / MJ, and the volume wear Rate 0.10cm ...

Embodiment 2

[0039] A method for preparing a shape-modifying grinding wheel for a motor vehicle tread cleaner, comprising the following steps:

[0040] (1) Preparation of raw materials:

[0041]

[0042] (2) Preparation:

[0043] The above-mentioned raw materials are firstly added to the high-speed rake mixer in proportion and step by step for mixing, and the mixing time is 8 minutes. Put the obtained mixed material in a molding mold, control the molding temperature to 130°C, and the molding pressure to 400kg / cm 2 Press for 500s. Then sinter the formed synthetic brake sheet at high temperature, the sintering temperature is 120°C, and the sintering time is 15 hours, and the grinding wheel can be obtained.

[0044] In the present embodiment, cashew nut shell oil modified phenolic resin is selected as the binding agent, and feldspar powder is selected as the shape-modifying aid. Wear rate 0.09cm 3 / MJ, compression strength 234Mpa, compression modulus 3.02Gpa, impact strength 4.7KJ / m ...

Embodiment 3

[0046] A method for preparing a shape-modifying grinding wheel for a motor vehicle tread cleaner, comprising the following steps:

[0047] (1) Preparation of raw materials:

[0048]

[0049] (2) Preparation:

[0050]The above-mentioned raw materials are first added to the high-speed rake mixer in proportion and step by step for mixing, and the mixing time is 10 minutes. Place the obtained mixed material in a molding mold, control the molding temperature to 140°C, and the molding pressure to 600kg / cm 2 Press for 450s. Then sinter the molded synthetic brake piece at high temperature, the sintering temperature is 140°C, and the sintering time is 18 hours, and the grinding wheel can be obtained.

[0051] In this embodiment, the adhesive is selected from silicone modified phenolic resin, and the shape-modifying aid is selected from quartz. The friction coefficient of the grinding wheel obtained in this embodiment is 0.57 (constant speed type), the mass wear rate is 0.09g / MJ, ...

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Abstract

The invention relates to a motor car wheel tread sweeper shape-repair grinding device and a preparation method thereof. The preparation method comprises: preparing the following raw materials by weight: 10-35% of a binder, 5-15% of nitrile butadiene rubber, 10-20% of carbon fiber, 5-10% of aramid fiber, 15-35% of a shape-repair aid, and 0-10% of graphite; adding the raw materials to a high speed plow harrow type material mixer in steps according to a certain ratio, mixing for 5-10 min, carrying out a reaction for 200-500 s in a molding mold at a temperature of room temperature to 150 DEG C under a pressure of 200-600 kg/cm<2>, and carrying out high temperature sintering on the molded grinding device for 5-20 h at a sintering temperature of 100-140 DEG C so as to obtain the motor car wheel tread sweeper shape-repair grinding device. Compared to the grinding device in the prior art, the grinding device of the present invention is used in the Changke standard multiple units, can significantly repair the wheel surface defects and the non-roundness, has characteristics of no undesirable phenomena such as cracks, hot spots, sparks, metal embedding, layering, shedding and the like, no damage to the dual, and good effect.

Description

technical field [0001] The invention relates to a braking material, in particular to a shape-modifying abrasive for a motor vehicle tread cleaner and a preparation method thereof. Background technique [0002] The grinder is a main part of the tread cleaning device of the EMU. It is pressed on the tread to clean during braking. It can remove dust, rust, grease, etc. attached to the tread of the wheel during braking and traction, and clean the wheel. The tread surface can effectively utilize the adhesion coefficient between the wheel and the rail, ensure the good technology of the wheel surface, shorten the braking distance of the EMU, prevent the wheel from idling and slipping, and ensure the safe operation of the train. In addition, the grinding wheel also has the function of repairing the surface defects and out-of-roundness of the wheel, which can eliminate the fatigue capillary cracks on the wheel surface in time, avoid the peeling phenomenon of the wheel surface, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/12B61H1/00B60S1/68
CPCB60S1/68B61H1/00C04B26/122C04B2201/20C04B2201/50C04B24/2652C04B14/386C04B16/0691C04B14/304C04B14/024C04B14/04C04B14/06
Inventor 张定权牛连杰
Owner SHANGHAI REINPHEN NEW MATERIAL TECH CO LTD
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