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A nanometer superparamagnetic mine hoist brake shoe formula and manufacturing method thereof

A mine hoist, superparamagnetic technology, applied to chemical instruments and methods, mechanical equipment, other chemical processes, etc., can solve the problems of magnetic field control without material conditions and technical foundation, and achieve improved braking performance and reliability , good heat resistance, the effect of reducing wear rate

Inactive Publication Date: 2016-09-07
中国矿业大学盱眙矿山装备与材料研发中心 +1
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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, the braking performance of the hoist friction brake can be significantly improved. Efficiency and 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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  • A nanometer superparamagnetic mine hoist brake shoe formula and manufacturing method thereof
  • A nanometer superparamagnetic mine hoist brake shoe formula and manufacturing method thereof
  • A nanometer superparamagnetic mine hoist brake shoe formula and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0035] Cashew shell oil modified phenolic resin 12 parts; nitrile rubber 4 parts; glass fiber 18 parts; acicular wollastonite 15 parts; aramid fiber 5 parts, graphite 4 parts, feldspar powder 8 parts, zeolite 6 parts, friction powder 4 parts, 10 parts of barium sulfate, carbon-coated nano-Fe 3 o 4 (below 16nm) 10 parts, silane coupling agent 2 parts, release agent 2 parts.

Embodiment 2

[0037] Cashew shell oil modified phenolic resin 10 parts; nitrile rubber 3 parts; glass fiber 15 parts; acicular wollastonite 18 parts; aramid fiber 4 parts, graphite 2 parts, feldspar powder 15 parts, zeolite 8 parts, friction powder 5 parts, 11 parts of barium sulfate, 5 parts of carbon-coated α-Fe (below 5nm), 2 parts of silane coupling agent, and 2 parts of release agent.

Embodiment 3

[0039] Cashew shell oil modified phenolic resin 15 parts; nitrile rubber 5 parts; glass fiber 15 parts; acicular wollastonite 12 parts; aramid fiber 8 parts, graphite 2 parts, feldspar powder 8 parts, zeolite 5 parts, friction powder 4 parts, 10 parts of barium sulfate, carbon-coated α-Fe 2 o 3 (Below 20nm) 15 parts, 3 parts of silane coupling agent, 2 parts of release agent.

[0040] Such as figure 1 Shown: The manufacturing method of nano superparamagnetic mine hoist brake shoes, all raw materials are dried in a drying box at a temperature of 30°C for 6 hours; the fiber materials are made into short fibers; the block materials are passed through a pulverizer processing, crushing into fine crushing; put the material into the mixer for high-speed mixing for 20-30min; disperse the carbon-coated nano-superparamagnetic particles by ultrasonic wave for 30-50min; The paramagnetic particles are added to the powdery material and mixed with a mixer for 20-30 minutes, and melted and...

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Abstract

The invention discloses a nanometer superparamagnetic shaft hoist brake shoe formula and a preparing method of the nanometer superparamagnetic shaft hoist brake shoe formula. The nanometer superparamagnetic shaft hoist brake shoe formula comprises cashew nut shell oil modified phenolic resin, butadiene-acrylonitrile rubber, glass fibers, needle-shaped wollastonite, aramid fibers, graphite, feldspar powder, zeolite, carbon-coated nanometer superparamagnetic particles, friction powder, barium sulfate, silane coupling agents and release agents. The preparing method includes the steps of smashing, mixing, hot press molding, heat treatment and the like. The nanometer superparamagnetic shaft hoist brake shoe formula and the preparing method have the advantages that a nanometer superparamagnetic shaft hoist brake shoe has the stable tribological property and the good heat resisting property, and are better suitable for extreme braking working conditions such as the high speed, heavy loads and the like. The heat resisting property and the impact resistance of the brake shoe are improved through nanometer magnetic particles, the brake shoe has the high relative permeability, and essential material conditions are provided for magnetic field control in the braking friction process. The nanometer superparamagnetic shaft hoist brake shoe does not need to be magnetized in advance, and friction behaviors can be adjusted through the magnetism and the magnetism existence by adjusting the external magnetic field in the braking process.

Description

technical field [0001] The invention relates to a mine brake shoe material formula, in particular to a nano superparamagnetic mine hoist brake shoe formula and a manufacturing method thereof. Background technique [0002] With the development of science and technology, the power, speed and load of all kinds of mining machinery and equipment are constantly increasing. The academic performance puts forward higher technical requirements. [0003] Most of the traditional mine hoist brake shoes use asbestos friction materials, which are gradually replaced by asbestos-free friction materials due to the disadvantages of poor thermal conductivity, unstable friction coefficient, large braking noise, and strong carcinogenicity. But at present, for most mine hoist brake shoes, under extreme braking conditions such as high speed and heavy load, its tissue composition is very easy to undergo qualitative changes in a short period of time, which will lead to brake friction failure and cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02C09K3/14
Inventor 鲍久圣阴妍胡东阳刘金革刘同冈刘书进刘阳
Owner 中国矿业大学盱眙矿山装备与材料研发中心
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