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Material formula and production method of hard magnetic brake shoe for mine hoist

A technology for mine hoists and manufacturing methods, applied in chemical instruments and methods, and other chemical processes, can solve the problems of magnetic field control without material conditions and technical foundations, and achieve improved braking performance and reliability, and stable friction and wear performance, the effect of reducing the wear rate

Active Publication Date: 2017-11-03
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the good controllability of the magnetic field, if the positive influence of the magnetic field on the braking friction behavior can be fully utilized and applied to the active control of the braking friction process of the hoist, the braking performance and braking performance of the friction brake can be significantly improved. Reliability, but because the existing brake shoe materials are non-metallic and non-ferromagnetic materials, the magnetic field control of the braking friction process does not yet have the most basic material conditions and technical basis

Method used

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  • Material formula and production method of hard magnetic brake shoe for mine hoist
  • Material formula and production method of hard magnetic brake shoe for mine hoist
  • Material formula and production method of hard magnetic brake shoe for mine hoist

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The organic binder is 12 parts of cashew nut shell oil modified phenolic resin (the cashew nut shell oil modified phenolic resin is a kind of modified phenolic resin), plus 4 parts of nitrile rubber powder; reinforcing fiber: 18 parts of glass fiber, aramid 4 parts of fiber, 12 parts of sepiolite fiber; friction modifier: 3 parts of graphite, 2 parts of zircon, 10 parts of feldspar, 10 parts of barite; filler: 6 parts of cashew nut shell oil friction powder, zirconium coupler 2 parts of coupling agent (zirconium coupling agent is a kind of coupling agent), 2 parts of release agent; hard magnetic material: 15 parts of NdFeB magnetic powder.

Embodiment 2

[0033] The organic binder is 12 parts of cashew nut shell oil modified phenolic resin, plus 4 parts of styrene-butadiene rubber powder; reinforcing fiber: 18 parts of glass fiber, 4 parts of aramid fiber, 12 parts of FKF fiber; friction performance modifier: 3 parts of graphite , wollastonite 6 parts, feldspar 8 parts, barite 8 parts; filler: cashew nut shell oil friction powder 6 parts, zirconium coupling agent 2 parts, release agent 2 parts; hard magnetic material: barium ferrite magnetic powder 15 servings.

Embodiment 3

[0035] The organic binder is 12 parts of nitrile rubber modified phenolic resin (nitrile rubber modified phenolic resin is a kind of modified phenolic resin), plus 4 parts of nitrile rubber powder; reinforced fiber: 13 parts of glass fiber, aramid 4 parts of fiber, 9 parts of sepiolite fiber, 8 parts of FKF fiber; friction modifier: 3 parts of graphite, 2 parts of alumina, 10 parts of feldspar, 10 parts of barite; filler: 6 parts of cashew nut shell oil friction powder , 2 parts of silane coupling agent (silane coupling agent is a kind of coupling agent), 2 parts of release agent; hard magnetic material: 15 parts of strontium ferrite magnetic powder.

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Abstract

The invention discloses a material formula of a hard magnetic brake shoe for a mine hoist and a manufacturing method thereof. The material formula consists of the following components in parts by weight: 10-20 parts of organic binder, 15-50 parts of reinforcing fiber, and a friction performance modifier 15-45 parts, 3-10 parts of filler, 5-40 parts of hard magnetic material. The production method includes crushing, mixing, hot pressing, magnetizing, heat treatment and surface processing. The beneficial effects are: the hard magnetic brake shoe of the mine hoist exhibits stable friction and wear performance and good heat resistance, and is better adapted to extreme braking conditions such as high speed and heavy load; the added hard magnetic material makes the hoist brake The shoe increases the friction coefficient and reduces the wear rate, and makes the magnetized brake shoe have higher remanence, which provides the most basic material conditions for the magnetic field control of the braking friction process. The hard magnetic brake shoes of the mine hoist can maintain magnetism for a long time after being magnetized, and the braking process can affect and adjust the friction behavior without an external magnetic field.

Description

technical field [0001] The invention relates to a material formula of a brake shoe of a hoist, in particular to a material formula of a hard magnetic brake shoe of a mine hoist and a manufacturing method thereof. Background technique [0002] With the development of society and the progress of science and technology, people have higher and higher requirements for the safety, reliability and environmental protection of the braking process. Traditional friction materials cannot fully adapt to various complex working conditions of mining machinery. Functional friction materials not only have good physical and mechanical properties and friction properties, but also have some specific effects (magnetic, conductive, luminous, etc.), making up for the traditional The lack of performance of friction materials is an important development trend of high-performance friction materials and has huge market potential. [0003] Most traditional mine hoist brake shoes are made of asbestos f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14
Inventor 鲍久圣胡东阳阴妍刘金革刘同冈刘书进刘阳
Owner CHINA UNIV OF MINING & TECH
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