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Pantograph metal-impregnated carbon slider vacuum pressure infiltration method

A technology of vacuum pressure impregnation and metal impregnation, which is applied in the field of pantograph slide material preparation, which can solve problems affecting product performance, increasing processing costs, and wire wear, and achieves small wire wear, high dimensional accuracy control, and low resistivity Effect

Active Publication Date: 2015-04-29
温州宏丰特种材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process is simple and controllable, but the copper content in the metal-impregnated carbon sliding plate material prepared by this process is about 60wt%, and the wear on the wire is serious
In addition, the prepared skateboard material needs further cumbersome processing, which not only increases the subsequent processing cost, but also affects the product performance to a certain extent

Method used

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  • Pantograph metal-impregnated carbon slider vacuum pressure infiltration method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In Example 1, the basic operation steps of preparing a pantograph-impregnated metal-carbon slide plate by vacuum pressure infiltration technology are as follows:

[0028] I), material composition of impregnated metal carbon slide plate

[0029] The material composition of metal-impregnated carbon skateboard is mainly copper-chromium alloy and carbon strip, wherein the chromium content in copper-chromium alloy is 0.8wt%; the composition of carbon strip is calcined petroleum coke, graphite powder and pitch, and the density of carbon strip is 1.62g / cm 3 , the porosity is 12%, and the average pore size is 0.6 μm.

[0030] II), the basic steps of vacuum pressure impregnation (technical process sees attached figure 2 )

[0031] 1) First place the porous carbon strip to be infiltrated and the copper-chromium alloy in the graphite boat respectively.

[0032] 2) Then vacuumize. While removing the air in the furnace body, the air in the pores of the porous carbon strip is di...

Embodiment 2

[0038] The difference from Example 1 is that this Example 2 uses copper-titanium alloy and carbon strips.

[0039] The basic operation steps of the metal-carbon slide plate impregnated with the pantograph in Example 2 are as follows:

[0040] I), material composition of impregnated metal carbon slide plate

[0041] The material components of the metal-impregnated carbon slide plate are mainly copper-titanium alloy and carbon strips, wherein the titanium content in the copper-titanium alloy is 1 wt%, and the composition of the carbon strips is the same as that in Example 1.

[0042] II), the basic steps of vacuum pressure impregnation (technical process sees attached figure 2 )

[0043] 1) First place the porous carbon strip to be infiltrated and the copper-titanium alloy in the graphite boat respectively.

[0044] 2) Then vacuumize. While removing the air in the furnace body, the air in the pores of the porous carbon strip is discharged. This process will promote the impr...

Embodiment 3

[0050] The difference from Example 1 is that this Example 3 uses carbon strips with low porosity, and the alloy is copper-chromium alloy.

[0051] The basic operation steps of the metal-carbon slide plate impregnated with the pantograph in Example 3 are as follows:

[0052] I), material composition of impregnated metal carbon slide plate

[0053] The material composition of the metal-impregnated carbon slide plate is mainly copper-chromium alloy and carbon strips, wherein the copper-chromium alloy is the same as in Example 1, and the composition of the carbon strips is calcined petroleum coke, graphite powder and pitch, and the density of the carbon strips is 1.65g / cm 3 , the porosity is 11%, and the average pore size is 0.7 μm.

[0054] II), the basic steps of vacuum pressure impregnation (technical process sees attached figure 2 )

[0055] 1) First place the porous carbon strip to be infiltrated and the copper-chromium alloy in the graphite boat respectively.

[0056] 2...

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Abstract

The invention discloses a pantograph metal-impregnated carbon slider vacuum pressure infiltration method. The method comprises the steps of, firstly, placing porous carbon strips into a first graphite boat; secondly, placing a copper alloy block, which is composed of a copper alloy matrix and additive elements of Cr or Ti, into a second graphite boat; thirdly, vacuumizing a system where the graphite boats are arranged, performing heating after reaching a designated vacuum degree, rotating a furnace after reaching a designated temperature to pour the copper alloy into the first graphite boat with the porous carbon strips, and preforming rapid pressurizing to complete a pressure infiltration process; fourthly, after the copper alloy cools down, pouring surplus copper alloy into the second graphite boat, and extracting metal-impregnated carbon sliders. The pantograph metal-impregnated carbon slider vacuum pressure infiltration method achieves fully-automated production and meanwhile breaks through technical barriers, thereby improving the comprehensive performance of the metal-impregnated carbon sliders and being capable of producing products good in interface bonding, high in dimensional precision, low in resistance coefficient and frictional coefficient and high in strength.

Description

technical field [0001] The invention belongs to the technical field of preparation of pantograph sliding plate materials, in particular to a method for producing pantograph impregnated metal carbon sliding plate materials by adopting vacuum pressure impregnation technology. Background technique [0002] With the rapid development of high-speed railways in the world and in my country, pantograph slide material, as the most important current-collecting component of high-speed trains, has put forward higher requirements for its comprehensive performance, and at the same time, its consumption is also increasing day by day. Pantograph carbon slides mainly include pure metal slides, powder metallurgy slides, pure carbon slides and metal-impregnated carbon slides. The preparation methods mainly include powder metallurgy, high-pressure sintering, vacuum pressure impregnation, etc. At present, the leading product in the market is metal-impregnated carbon slide. The traditional powde...

Claims

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Application Information

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IPC IPC(8): B22D23/04
CPCB22D23/04
Inventor 陈林驰
Owner 温州宏丰特种材料有限公司
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