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Grinder of bullet train tread cleaner and production method thereof

A technology of grinders and composite materials, applied in the field of grinding, can solve the problems of harmful wheels, high compressive modulus and high acting pressure

Active Publication Date: 2012-05-02
BEIJING RAILWELD NEW MATERIAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many problems with the abrasives currently used. For example, metal inlays are prone to appear during use, which will have a harmful impact on the wheels in serious cases. For example, thermal cracks will appear on the surface of the abrasives at the end of use, which is easy to cause slag to fall off. block, thereby seriously affecting driving safety
In addition, the compression modulus of the existing materials used to make grinding wheels is relatively high, the contact area is small and the applied pressure is high, resulting in local contact, resulting in thermal damage to the wheel due to thermal effects

Method used

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Embodiment Construction

[0010] The grinding wheel of the present invention is made of composite materials. The composite material consists of numerous components. These components preferably include modified phenolic resin 6818, reduced iron powder, copper fiber, steel fiber, sepiolite, potassium feldspar, graphite, cryolite, alumina. Among them, the chemical composition of sepiolite is silicon (Si) and magnesium (Mg) compounds; its standard crystal chemical formula is Mg 8 (H 2 O) 4 [Si 6 o 16 ] 2 (OH) 48 h 2 O, where SiO 2 The content is generally between 54%-60%, and the MgO content is mostly in the range of 21-25%. Potassium feldspar is a potassium-rich silicate mineral, K[AlSi 3 o 8 ] The general term for the three homogeneous and multi-like variants of sanitine, orthoclase, and microcline. The composition of pure potassium feldspar is K 2 O 16.9%, Al 2 o 3 18.4%, SiO 2 64.7%. Pure potassium feldspar is rare in nature, it often contains Na 2 O, and contains the mixture BaO, FeO...

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Abstract

The invention provides a grinder of a bullet train tread cleaner, wherein the grinder is made of a composite material; the composite materials comprises modified phenolic resin 6818, iron powder, copper fibres, steel fibres, sepiolite, potassium feldspar, graphite, cryolite and aluminium oxide; the invention further provides a production method of the grinder.

Description

technical field [0001] The invention relates to the field of grinding, in particular to a grinding wheel for a motor vehicle tread cleaner and a manufacturing method thereof. Background technique [0002] The motor car tread cleaner plays the role of cleaning the wheel and increasing the wheel-rail adhesion coefficient to ensure the braking safety of high-speed trains. The part of the tread cleaner that directly acts on the wheel is called a grinder. Grinding wheels, usually made of high metal content composite materials, use low-speed intermittent or continuous low-pressure contact with the wheel to clean and build adhesion. [0003] There are many problems with the abrasives currently used. For example, metal inlays are prone to appear during use, which will have a harmful impact on the wheels in serious cases. For example, thermal cracks will appear on the surface of the abrasives at the end of use, which is easy to cause slag to fall off. block, which seriously affects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/14C08K13/04C08K3/08C08K7/06C08K3/34C08K3/04C08K3/22C09K3/14B60S1/68
Inventor 裴顶峰党佳贺春江俞播张恒张国文郑华
Owner BEIJING RAILWELD NEW MATERIAL TECH CO LTD
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