Carbon based sliding plate material of high speed railway pantograph and preparation method thereof

A high-speed railway, pantograph technology, applied in the direction of collectors, electric vehicles, power collectors, etc., to achieve the effects of small wear, short production cycle, and low energy consumption

Inactive Publication Date: 2013-02-13
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the slide plate has high mechanical properties and excellent wear resistance characteristics, the cost of raw materials is high, and the wear of the wire is serious
[0010] At present, there are few domestic research reports on current-carrying friction materials with low friction and wear properties and good electrical conductivity

Method used

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  • Carbon based sliding plate material of high speed railway pantograph and preparation method thereof
  • Carbon based sliding plate material of high speed railway pantograph and preparation method thereof
  • Carbon based sliding plate material of high speed railway pantograph and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]The carbon-based composite materials for pantograph slides are: 15 wt% of 130-mesh graphite, 55 wt% of 120-mesh coke powder, 20 wt% of thermosetting phenolic resin, 8 wt% of 150-mesh alumina, 2 wt% of 160-mesh glass powder. The method of dry mixing, after ball milling for 15 h, preheated to 80 °C, held for 3 h; under the pressure of 200 MPa, hot pressing at 180 °C for 4 h; in nitrogen atmosphere, the voltage was 70 V, using surface strengthening The processor plated copper on the surface of the carbon substrate for 5 h; in an argon atmosphere, sintered at 800 °C for 2 h to prepare a carbon-based friction material sample 1 with a surface modification layer. Its metallographic photos are as figure 2 As shown, the friction performance curve is as Figure 4 As shown, the basic properties of the surface modification layer are shown in Table 1 below.

[0035] Table 1

[0036] Sample 1 Sample 2 Vickers hardness HV 94.5 92.3 ResistivityμΩ·m 17.78 ...

Embodiment 2

[0039] The carbon-based composite materials for the pantograph slide plate are: 25 wt% of 180-mesh graphite, 40 wt% of 160-mesh coke powder, 25 wt% of thermosetting phenolic resin, 6 wt% of 180-mesh alumina, 4 wt% of 190-mesh glass powder. The method of state mixing, ball milling for 10 h, preheating to 60 ℃, holding for 4 h; under the pressure of 250 MPa, hot pressing at 200 ℃ for 8 h; Copper was plated on the surface of the carbon substrate for 4 h; in an argon atmosphere, it was sintered at 1000 °C for 5 h to prepare a carbon-based friction material sample 2 with a surface modification layer. Its metallographic photos are as image 3 As shown, the friction performance curve is as Figure 5 As shown, the basic properties of the surface modification layer are shown in Table 2 below.

[0040] Table 2

[0041] Sample 1 Sample 2 Vickers hardness HV 94.5 92.3 ResistivityμΩ·m 17.78 14.26 coefficient of friction 0.25 0.24

[0042] The fri...

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Abstract

The invention provides a carbon based sliding plate material of a high-speed railway pantograph and a preparation method thereof. The carbon based sliding plate material is composed of graphite, powdered coke, thermosetting phenol resins, aluminum oxide and glass powder. The preparation method of the carbon based sliding plate material comprises the steps of mixing the materials in a dry basis state, wherein a base body is formed by the graphite and the powdered coke, the thermosetting phenol resins serve as binders, and the mixture of the aluminum oxide and the glass powder serves as friction modifier; performing hot press molding; plating copper on the surface of the base body in an electric spark mode under the nitrogen atmosphere; and performing high-temperature diffusion in a plasma vacuum sintering device to obtain the carbon based sliding plate material with a surface modified layer. The carbon based sliding plate material has good lubricating performance of a pure carbon sliding plate and good conductivity of a pure metal sliding plate, and is low in cost, less in consumed energy, simple in preparation process, short in production period and suitable for manufacturing a slide plate of an electric locomotive pantograph of a high-speed railway.

Description

technical field [0001] The invention relates to a high-speed railway pantograph sliding plate material and a preparation method thereof, in particular to a high-speed railway pantograph carbon-based sliding plate material used for copper wire receiving electricity and a preparation method thereof. Background technique [0002] The pantograph or shoe involved in modern rail transit and the contact grid wire or conductive rail rub against each other to receive current, which is the power component of the electric locomotive. The quality of the current friction material is important for the stability, safety and reliability of the electric locomotive. have an important impact. [0003] The material of the pantograph slide plate and the wire of the contact grid rub against each other to receive current. For the reason of protecting the wire, it is required that the material of the pantograph slide plate has less wear and resistance to the wire. Based on this, various pantograph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L5/20C04B35/532C04B35/622C04B35/63C04B41/88
Inventor 杨慧君乔珺威唐宾王恒朋种海宁
Owner TAIYUAN UNIV OF TECH
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