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Grinder for tread cleaning device for high-speed motor car and preparation process

A grinding wheel and high-speed train technology, applied in vehicle cleaning, vehicle maintenance, transportation and packaging, etc., can solve problems such as easy oxidation, achieve good deflation and hot pressing, reduce deflation operation procedures, and avoid failure effects

Active Publication Date: 2021-10-08
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

Its purpose is to overcome the quality defect that the surface of the existing abrasives is easily oxidized, and provides a tread cleaner abrasive paint and a coated abrasive. The tread cleaner abrasive paint is environmentally friendly and non-toxic, and can effectively prevent inorganic Oxidation of bonding agent and carbon-containing substances further increases the service life of the grinding wheel and improves the performance of the grinding wheel

Method used

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  • Grinder for tread cleaning device for high-speed motor car and preparation process

Examples

Experimental program
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Embodiment 1

[0033] Process A prepares the adhesive tungsten silicon phenolic resin:

[0034] 1) Add 130g of 1-naphthyltriethoxysilane into 1L of 50% ethanol aqueous solution, add hydrochloric acid to adjust the pH value to 5, and hydrolyze it at a temperature of 35°C for 5 hours to obtain solution I;

[0035] 2) Prepare a tungsten-piperazine complex by reacting 1 mol of tungsten hexacarbonyl with 6 mol of piperazine, which is designated as product II;

[0036] 3) Dissolve 30g of catalyst sodium hydroxide in 37% formaldehyde solution, then mix it with 940g of melted phenol in the reactor (the molar ratio of phenol to formaldehyde is 1:1), and react at 65°C for 2 hours; After vacuum dehydration, add solution I and product II, and react for 2.5 hours to obtain tungsten-silicon double-modified phenolic resin, and tungsten, silicon and phenolic formaldehyde form chemical bonds;

[0037] Process B: Preparation of modified graphite:

[0038] Based on the total weight of the friction block, a d...

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Abstract

The invention relates to a grinder for a tread cleaning device for a high-speed motor vehicle and its preparation process, including a friction block and a back plate, the friction block is in contact with the back plate, and a connecting part embedded in the friction block is arranged on the back plate, and the connecting part is Barb-shaped, when preparing, put the back plate with barb-shaped connecting parts into the hot-pressing mold, use the hot-pressing device with 0.1-1mm exhaust micro-holes on the hot-pressing head, and inject the friction material components into the mold Thermoforming. Friction material components include 22-35wt% tungsten-silicon double-modified phenolic resin binder, 10-25%wt 3-5mm thermally conductive enhanced copper fiber, 20%-35% nickel powder, 2-5wt% graphite impregnated in 16 ‑30wt% of porous ceramic particles meet the application requirements of grinding sub-working conditions, have high thermal stability, no shedding and knotting, and have certain effects such as repairing.

Description

technical field [0001] The invention relates to the field of high-speed railway equipment manufacturing, in particular to an accessory of a tread cleaning device, in particular to a grinder and a preparation process thereof. Background technique [0002] With the development of domestic high-speed railways and the construction of dedicated passenger lines, the operating environment and regions of EMUs have become more complex. Good wheel-rail contact plays a decisive role in the safe and reliable operation of EMUs. Therefore, the tread cleaner grinder has become an important part of the braking system of the EMU, which is related to the operation safety and cost of the EMU. [0003] As the technical context of the development of abrasives, the industry is basically clear. The research group led by researcher Pei Dingfeng of the China Academy of Railway Sciences has conducted in-depth research on this. In the article "Research on the Impact of Tread Cleaner Abrasive Materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60S1/68C08L61/14C08K7/06C08K9/12C08K7/24C08K3/04C08K3/08C08K13/06
CPCB60S1/68C08K3/04C08K3/08C08K7/06C08K7/24C08K9/12C08K13/06C08K2003/0862C08L61/14
Inventor 黄建东
Owner 上海国由复合材料科技有限公司
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