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Preparation method of a self-lubricating copper-carbon pantograph composite material

A composite material and pantograph technology, which is applied in the field of preparation of copper-carbon pantograph composite materials, can solve problems such as unreached performance parameters, achieve simple configuration, high lubrication effect, and increase the effect of graphite lubrication area

Inactive Publication Date: 2017-02-22
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its relevant performance parameters have not reached the current commonly used carbon skateboards.

Method used

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  • Preparation method of a self-lubricating copper-carbon pantograph composite material
  • Preparation method of a self-lubricating copper-carbon pantograph composite material
  • Preparation method of a self-lubricating copper-carbon pantograph composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the self-lubricating copper-carbon pantograph composite material described in this embodiment specifically comprises the following steps:

[0023] (1) Porous copper-chromium alloy prepared by Gasar technology (parameters: hydrogen pressure 6atm, holding temperature 1150°C, holding time 5min) as raw material (its characteristic parameters are: composite material density ρ =3.75g / cm 3 , the average diameter of the pores is 0.63mm, and the porosity is 43%; the friction coefficient of the 300N load and the 45# steel friction pair is μ=0.035, and the total area ratio of the cross-section pores is 15%), cleaning (use 1% concentration of the porous matrix Nitric acid solution cleaning for 5 minutes, cleaning in the ultrasonic tank, after cleaning, take it out and put it in 99.9% alcohol for 5 minutes), dry it and set it aside;

[0024] (2) Adhesive (a mixture obtained by mixing PVB solution and FB type thermosetting resin at a mass ratio of 8:3, wit...

Embodiment 2

[0027] The preparation method of the self-lubricating copper-carbon pantograph composite material described in this embodiment specifically comprises the following steps:

[0028] (1) Select porous pure copper with a purity of 99.9% prepared based on Gasar technology (parameters: hydrogen pressure 1atm, holding temperature 1100°C, holding time 10min) (its characteristic parameters are: porosity 50%, cross-sectional hole The total area ratio is 30%, and the average pore diameter is 1.7mm) is a porous substrate, and it is cleaned (clean the porous substrate with a 3% nitric acid solution for 10 minutes, and the cleaning is carried out in an ultrasonic tank, and after cleaning, take it out and put it in 99.9% alcohol After cleaning for 10 minutes), dry and set aside;

[0029] (2) Adhesive (a mixture obtained by mixing PVB solution and FB type thermosetting resin at a mass ratio of 9:3, with a mass ratio of 2:1, and the PVB solution mass percentage concentration is 5%) Mix unifor...

Embodiment 3

[0032] The preparation method of the self-lubricating copper-carbon pantograph composite material described in this embodiment specifically comprises the following steps:

[0033] (1) Select porous pure copper with a purity of 99.99% prepared based on Gasar technology (hydrogen pressure 6atm, holding temperature 1200°C, holding time 1min) (its characteristic parameters are: porosity 60%, total area ratio of cross-sectional pores 40%, the average pore diameter is 1.2mm) is a porous substrate, cleaning (cleaning the porous substrate with 5% nitric acid solution for 15 minutes, cleaning in an ultrasonic tank, taking it out after cleaning, putting it in 99.9% alcohol and cleaning it for 15 minutes minutes), dried for later use;

[0034] (2) Adhesive (a mixture obtained by mixing PVB solution and FB type thermosetting resin at a mass ratio of 10:3, with a mass ratio of 3:2, and its PVB solution mass percentage concentration is 7%) After uniformly mixing with graphite (10000 mesh) ...

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Abstract

The invention discloses a preparation method of a self-lubricating copper-carbon pantograph composite material, and belongs to the technical field of material preparation. The method comprises the steps that a regular porous copper alloy or porous fine copper is prepared by employing a Gasar process and serves as a matrix framework of the copper-carbon composite material; and graphite powder is mixed uniformly with an adhesive, then uniformly pressed into the interiors of copper-based regular holes under pressure, and sintered to form the self-lubricating copper-carbon pantograph composite material. The copper-carbon pantograph composite material prepared by the method has the characteristics of self-lubrication, low friction coefficient, low resistivity, etc., and is particularly suitable for manufacturing of sliding shoes and an electric brush of an electromotor of a high speed train under working conditions of high voltage and high electric current, and the self-lubricating copper-carbon pantograph composite material has very high practical values and popularization values due to low manufacturing cost, short cycle and high specific strength.

Description

technical field [0001] The invention relates to a preparation method of a self-lubricating copper-carbon pantograph composite material, belonging to the technical field of material preparation. Background technique [0002] In recent years, with the rapid development of high-speed trains, my country's requirements for pantograph materials for high-speed trains are getting higher and higher. Coupled with the further increase of train speed, the performance requirements of the pantograph material are more stringent. It must have high wear resistance while meeting high conductivity, and it must not damage the transmission line during the operation of the train. produce greater wear and tear. This requires that the pantograph material must have self-lubrication, low friction, high conductivity and high wear resistance. At present, the dominant pantograph material in China is mainly Siemens carbon skateboards, which are equipped with aluminum alloy brackets, which have long ser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08C22C9/00
Inventor 金青林文志春蒋业华
Owner KUNMING UNIV OF SCI & TECH
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