Brake material for medium-low-speed maglev train and preparation method of brake material

A technology for magnetic levitation trains and braking materials, applied in mechanical equipment, gear transmission mechanisms, metal processing equipment, etc., can solve the problems of low friction coefficient, short material life, damage to magnetic rails, etc., and achieve high heat capacity and reduce apparent hardness. , The effect of improving load resistance performance

Active Publication Date: 2021-07-06
EAST CHINA JIAOTONG UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the low and unstable friction coefficient of the braking material used for medium and low-speed maglev trains in service, large wear and short material life when rubbing against the magnetic rail, and damage to the magnetic rail and magnetizer due to poor matching with the magnetic rail. problem, thereby providing a kind of brake material and its preparation method for medium and low speed maglev trains

Method used

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  • Brake material for medium-low-speed maglev train and preparation method of brake material
  • Brake material for medium-low-speed maglev train and preparation method of brake material
  • Brake material for medium-low-speed maglev train and preparation method of brake material

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Effect test

Embodiment 1

[0041] The component weight percentages of the brake material for the middle and low speed maglev trains of the present embodiment: 50% of copper powder, 4% of zinc powder, 4% of aluminum powder, 3% of molybdenum powder, 1% of tungsten disulfide powder, 18% of graphite powder, Magnesia powder 9%, zirconia powder 11%.

[0042] According to the weight percentage of each component and the total weight of the ingredients, weigh the copper powder, molybdenum powder and tungsten disulfide powder, mix well, and sieve through a 200-mesh standard sieve for premixing. According to the weight percentage of each component and the total weight of the ingredients, the remaining raw materials of all the components are weighed and poured into the above-mentioned premixed material. Add kerosene with a weight of 1.5% of the total weight of the ingredients into all the raw materials that have been batched, and then mix the powder well, put the powder into a three-dimensional mixer and mix for 6 ...

Embodiment 2

[0044] The component weight percentages of the brake material for the middle and low speed maglev trains of the present embodiment: 57% of copper powder, 6% of zinc powder, 1% of aluminum powder, 4% of molybdenum powder, 4% of tungsten disulfide powder, 10% of graphite powder, Magnesia powder 6%, zirconia powder 12%.

[0045] According to the weight percentage of each component and the total weight of the ingredients, weigh the copper powder, molybdenum powder and tungsten disulfide powder, mix well, and sieve through a 200-mesh standard sieve for premixing. According to the weight percentage of each component and the total weight of the ingredients, the remaining raw materials of all the components are weighed and poured into the above-mentioned premixed material. Add kerosene with a weight of 0.8% of the total weight of the ingredients into all the raw materials that have been prepared, and then mix the powder evenly, then put the powder into a three-dimensional mixer and mi...

Embodiment 3

[0047] The component weight percentages of the brake material for the middle and low speed maglev trains of the present embodiment: 65% of copper powder, 1% of zinc powder, 5% of aluminum powder, 1% of molybdenum powder, 2% of tungsten disulfide powder, 11% of graphite powder, Magnesia powder 10%, zirconia powder 5%.

[0048] According to the weight percentage of each component and the total weight of the ingredients, weigh the copper powder, molybdenum powder and tungsten disulfide powder, mix well, and sieve through a 200-mesh standard sieve for premixing. According to the weight percentage of each component and the total weight of the ingredients, the remaining raw materials of all the components are weighed and poured into the above-mentioned premixed material. Add kerosene with a weight of 1.0% of the total weight of the ingredients into all the raw materials that have been batched, and then mix the powder evenly. Put the powder into a three-dimensional mixer and mix for ...

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Abstract

The invention discloses a brake material for a medium-low-speed maglev train and a preparation method of the brake material. The base component of the brake material is copper, the strengthening components are zinc, aluminum and molybdenum, the lubricating components are tungsten disulfide and graphite, and the friction components are magnesium oxide and zirconium dioxide. The brake material comprises the following components in percentage by weight: 50-65% of copper, 1-6% of zinc, 1-5% of aluminum, 1-4% of molybdenum, 1-4% of tungsten disulfide, 10-18% of graphite, 6-10% of magnesium oxide and 5-12% of zirconium dioxide. The invention also discloses a preparation method of the brake material. The prepared brake material for the medium-low-speed maglev train is non-magnetic, has a high and stable friction coefficient, is good in wear resistance and high in environmental adaptability, does not damage a magnetic track, and is simple in material component, simple in process and relatively low in cost.

Description

technical field [0001] The invention relates to the fields of magnetic levitation train technology and powder metallurgy technology, in particular to a braking material for medium and low speed magnetic levitation trains and a preparation method thereof. Background technique [0002] Medium and low-speed maglev trains rely on electromagnetic force to levitate the train, which overcomes the adhesion limitation of traditional wheel-rail trains. It has the advantages of strong climbing ability, small turning radius, low noise, environmental protection, high safety, and low construction cost. It is a kind of Great potential urban rail transit. [0003] Braking system is an essential part of medium and low-speed maglev trains, and its braking capacity is the fundamental guarantee for train operation safety and transportation capacity. The braking methods of medium and low-speed maglev trains mainly include electric braking and mechanical braking, and floor braking is also used i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C32/00C22C1/05B22F1/00B22F3/14F16D69/02
CPCC22C9/00C22C32/0084C22C32/00C22C1/05B22F3/14F16D69/027F16D2200/0026F16D2200/0069F16D2200/0073F16D2200/0082F16D2200/0086B22F1/105
Inventor 肖叶龙成煜沈明学姚萍屏梁伟晗赵火平熊光耀
Owner EAST CHINA JIAOTONG UNIVERSITY
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