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Preparation method for carbon sliding block material used for maglev train

A technology of magnetic levitation trains and carbon sliders, which is applied to electric vehicles, vehicle parts, power collectors, etc., can solve the problems of parking conductivity, large friction coefficient, edge drop, and block drop, etc., to achieve good lubrication performance and improve friction coefficient, the effect of prolonging the service life

Inactive Publication Date: 2018-01-09
SUZHOU DONEKA NEW MATERIALS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is almost no research on carbon sliders for maglev trains. Most of the existing carbon sliders are powder metallurgy carbon sliders. The process is easy to cause edge drop, block drop, etc., and it is easy to cause parking and poor electrical conductivity, etc., and the price is high

Method used

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  • Preparation method for carbon sliding block material used for maglev train
  • Preparation method for carbon sliding block material used for maglev train
  • Preparation method for carbon sliding block material used for maglev train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] (1) Prepare materials according to the following proportions by weight

[0079]

[0080]

[0081] (2) Raw material mixing

[0082] Heating the mixing pot continuously, when the temperature of the mixing pot reaches 120℃, add petroleum coke, artificial graphite, natural graphite, asphalt, molybdenum disulfide, carbon fiber and zinc stearate into the mixing pot, stir and mix for 2 hours, so that It is uniform, and the powdery primary mixture is obtained;

[0083] Then, when the temperature of the heating pot reaches 150°C, the asphalt is added to the initial mixture, and the mixture is stirred and mixed for 1.5 hours to make it uniform to obtain a powdery mixture;

[0084] (3) Pressing treatment

[0085] The powdery mixture is placed in a mold for pressing to obtain a cylindrical column;

[0086] (4) Extrusion molding

[0087] Put the material column into the extruder and extrude to obtain the carbon slider material blank, and set the extrusion temperature to 17...

Embodiment 2

[0095] (1) Prepare materials according to the following proportions by weight

[0096]

[0097] (2) Raw material mixing

[0098] The mixing pot was heated continuously. When the temperature of the mixing pot reached 125°C, petroleum coke, artificial graphite, natural graphite, asphalt, molybdenum disulfide, carbon fiber and zinc stearate were added to the mixing pot, and stirred and mixed for 2.3 hours. Make it uniform to obtain a powdery primary mixture;

[0099] Then, when the temperature of the heating pot reaches 145°C, the asphalt is added to the initial mixture, and the mixture is stirred and mixed for 1.2 hours to make it uniform to obtain a powdery mixture;

[0100] (3) Pressing treatment

[0101] The powdery mixture is placed in a mold for pressing to obtain a cylindrical column;

[0102] (4) Extrusion molding

[0103] Put the material column into the extruder and extrude to obtain the carbon slider material blank, and set the extrusion temperature to 175°C;

...

Embodiment 3

[0111] (1) Prepare materials according to the following proportions by weight

[0112]

[0113] (2) Raw material mixing

[0114] The mixing pot was heated continuously. When the temperature of the mixing pot reached 115°C, the petroleum coke, artificial graphite, natural graphite, asphalt, molybdenum disulfide, carbon fiber and zinc stearate were added to the mixing pot, and stirred and mixed for 2.2 hours. Make it uniform to obtain a powdery primary mixture;

[0115] Then, when the temperature of the heating pot reaches 155°C, the asphalt is added to the initial mixture, and the mixture is stirred and mixed for 1.3 hours to make it uniform to obtain a powdery mixture;

[0116] (3) Pressing treatment

[0117] The powdery mixture is placed in a mold for pressing to obtain a cylindrical column;

[0118] (4) Extrusion molding

[0119] Put the material column into the extruder and extrude to obtain the carbon slider material blank, and set the extrusion temperature to 165°C...

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Abstract

The invention discloses a preparation method for a carbon sliding block material used for a maglev train. The preparation method comprises the following steps: under a heating condition, mixing an additive, a lubricant and carbon sliding block basic raw materials without asphalt uniformly to obtain an initial mixed material; under a heating condition, adding a carbon sliding block basic raw material asphalt to the initial mixed material, performing mixing under stirring uniformly to obtain a mixed material; placing the mixed material into a mould, and performing pressing treatment to obtain acylinder-shaped material column; placing the material column into an extruder, and performing extrusion molding to obtain a molded blank; and performing roasting treatment on the blank to obtain the carbon sliding block material. The carbon sliding block material prepared by the method has the advantages of having good strength, good wear resistance, pressure resistance, stability and lubricatingperformance, being easy to demould, and having high environmental adaptability, good mechanical processing performance, good conductivity and heat conducting performance, long service life, and good physical, mechanical and chemical properties.

Description

technical field [0001] The invention relates to a carbon slider of the third rail of a maglev train, in particular to a preparation method of a carbon slider material for a maglev train, and belongs to the field of urban rail transit accessories. Background technique [0002] The maglev train is a modern high-tech rail vehicle. It realizes the non-contact suspension and guidance between the train and the track through electromagnetic force, and then uses the linear electromagnetic force to pull the train to run. With the continuous enhancement of the country's economic strength and the improvement of people's living standards, the transportation capacity of rail transit must be improved to meet the needs of economic development and people's livelihood. Germany, Japan, the United States and other countries have launched the development and research of maglev trains. Germany and Japan go to a relatively large achievement. At present, my country has opened maglev trains in Sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/82C04B35/52C04B35/622B60L5/39
Inventor 林勇朱约辉
Owner SUZHOU DONEKA NEW MATERIALS CORP LTD
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