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Electric locomotive pantograph copper-soaking carbon contact strip producing method

A technology for electric locomotives and production methods, applied in electric vehicles, current collectors, vehicle parts, etc., can solve problems such as poor strength and short service life, and achieve the effects of strong wear resistance, long service life, and reduced resistivity

Active Publication Date: 2015-07-15
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the domestically-made copper-impregnated carbon skateboard has short service life, poor strength, wear resistance and self-lubricating properties need to be improved, and there are still big problems in the use process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] 1) Preparation of carbon skateboard;

[0019] 1.1) Prepare materials according to the following mass parts: 60-80 parts of pitch coke powder, 12-16 parts of graphite powder, 10-15 parts of silicified graphite powder, 30-35 parts of high-temperature pitch; the present invention makes the following requirements for the particle size of each raw material: graphite The powder is 320 mesh, and the silicified graphite powder is 100 mesh; the pitch coke powder is composed of two particle sizes of 150 mesh and 40 mesh, and the number of parts of the two particle sizes is the same. The particle size will affect the density and porosity of the pantograph slide, and then affect the resistivity, hardness and tensile strength of the slide. Asphalt coke powder is used as a binder, and asphalt coke powder with different particle sizes is used as a binder, mainly to improve the bonding performance, prevent the sliding block from falling off and impact resistance. The self-lubricating ...

Embodiment 1

[0026] Example 1: 1) Prepare materials according to the following mass parts: 65 parts of pitch coke powder, 12 parts of graphite powder, 12 parts of silicified graphite powder, 30 parts of high-temperature pitch; according to the ratio, put pitch coke powder and graphite powder of two particle sizes into kneading In the pot, mix coldly for 20 minutes, then add the additive - silicified graphite powder, continue mixing for 40 minutes, then add the melted high-temperature asphalt, mix for 1 hour at a temperature of 160-180°C, stop heating, cool down and grind again , the particle size is 300 mesh; the mixed powder ground into 300 mesh is pre-pressed on a 200T hydraulic press to form a one-stage material column of a certain specification, and the first-stage material column is placed in an oven at 120-140°C for curing for 8-9 Put the solidified first-stage material column into the extruder to extrude the carbon skateboard blank of the required specification; put the carbon skateb...

Embodiment 2

[0029]Example 2: 1) Prepare materials according to the following mass parts: 70 parts of pitch coke powder, 16 parts of graphite powder, 15 parts of silicified graphite powder, and 33 parts of high-temperature pitch; put the pitch coke powder and graphite powder of two particle sizes into kneading according to the proportion In the pot, mix coldly for 40 minutes, then add the additive - silicified graphite powder, continue mixing for 40 minutes, then add the melted high-temperature asphalt, mix for 1.5 hours at a temperature of 160-180°C, stop heating, cool down and grind again , the particle size is 310 mesh; the mixed powder ground into 310 mesh is pre-pressed on a 200T hydraulic press to form a one-stage material column of a certain specification, and the first-stage material column is placed in an oven at 120-140°C for 8-9 Put the solidified first-stage material column into the extruder to extrude the carbon skateboard blank of the required specification; put the carbon ska...

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Abstract

The invention discloses an electric locomotive pantograph copper-impregnated carbon contact strip producing method. The method comprises the steps that 1, pitch coke powder, graphite powder, siliconized graphite powder and high temperature pitch are mixed according to the proportion to be ground into powder; the mixed powder is prepressed into a stage stock column, and then the stage stock column is solidified and squeezed to be molded and roasted, so that a composite carbon contact strip is obtained; 2, the composite carbon contact strip is cleaned and dried, then is cooled and placed into a graphite crucible, and is placed in an electric furnace at temperature of 1300-1400 DEG C to be preheated; copper liquid is poured into the crucible to soak the composite carbon contact strip, then the crucible is placed in an oil press cover, nitrogen is led in, heat preservation is kept for 3-5 min under the specific intensity of pressure, and finally cooling is carried after pressure releasing. According to the electric locomotive pantograph copper-impregnated carbon contact strip producing method, the electroconductibility of the copper-impregnated carbon contact strip is improved, the electrical resistivity is lowered, the mechanical strength of the carbon contact strip and copper impregnated angle can be increased, then the carbon contact strip abrasive resistance and self-lubrication are improved, the copper-impregnated carbon contact strip is more resistant to abrasion, main line damage and block dropping are avoided, the shock resistance is high, and the service life of the copper-impregnated carbon contact strip is prolonged.

Description

technical field [0001] The invention relates to a pantograph sliding plate of an electric locomotive, in particular to a production method of a copper-impregnated carbon sliding plate of an electric locomotive pantograph, and belongs to the technical field of pantograph sliding plate devices. Background technique [0002] The degree of electric locomotives in railways is an important symbol of transportation in developed countries. Vigorously developing electrified railways is the most effective way to improve transportation capacity and improve the ability of railways to participate in market competition. The pantograph slide is the most important current-collecting component in the locomotive power supply system. It is installed on the pantograph and directly contacts the catenary wire, which belongs to the category of sliding contact contact materials. Through the contact between the pantograph slide plate and the transmission line, the current on the transmission netwo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/532C04B35/622C04B41/88B60L5/04
Inventor 陈建李春林金永中聂松罗少伶
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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