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A preparation method of electric locomotive pantograph composite slide plate

A technology for electric locomotives and pantographs, applied in the field of preparation of composite slide plates for electric locomotive pantographs, can solve the problems of good self-lubricating performance and anti-friction performance, low mechanical strength, poor wear resistance, etc., and achieve enhanced self-lubricating performance , The production equipment is simple, and the effect of improving the overall performance

Active Publication Date: 2020-11-17
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they all have their own problems. The pure metal slide plate wears seriously on the catenary wire; the pure carbon slide plate has low resistance, good self-lubricating performance and anti-friction performance, little wear on the catenary wire, and is resistant to corrosion and high temperature, but its mechanical strength is low. , poor impact resistance, especially when encountering hard wires, it is easy to cause the skateboard to break and crack; the impact resistance of metal-impregnated carbon skateboards is insufficient, and it is prone to block falling, which is more serious for wire wear; carbon skateboards are prepared using composite materials It has great advantages, especially the copper-based composite skateboard, but this kind of skateboard also has problems such as low strength and poor wear resistance
[0005] With the continuous development of railway electrification and high speed, the requirements for skateboard materials are constantly increasing. Simply using a carbon material can no longer meet the current requirements, and it is urgent to develop new skateboards.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In the present embodiment, the preparation method of composite slide plate is as follows:

[0027] Prepare materials according to the following mass parts: 5 parts of silicon carbide powder, 60 parts of pitch coke powder, 10 parts of graphite powder, and 25 parts of high-temperature pitch. After mixing silicon carbide powder, pitch coke powder and graphite powder evenly, add molten high-temperature pitch, Mix uniformly at 135°C for 2 hours, then cool, and grind the cooled mixture to a powder with a particle size of 350 mesh; uniformly disperse the uniformly dispersed reduced graphene oxide aqueous dispersion (mass fraction 3%) in the above mixing Put the powder on the powder, then pre-dry the powder at 60°C for 2 hours, then put it at 150°C to cure the composite powder for 5 hours, pass the cured powder through a screw extruder, and extrude the carbon skateboard blank of the required specification. The carbon slide plate blank is baked and released from the furnace to o...

Embodiment 2

[0029] In the present embodiment, the preparation method of composite slide plate is as follows:

[0030] Prepare materials according to the following mass parts: 12 parts of silicon carbide powder, 55 parts of pitch coke powder, 8 parts of graphite powder, and 25 parts of high-temperature pitch. After mixing silicon carbide powder, pitch coke powder and graphite powder evenly, add molten high-temperature pitch, Mix evenly at 140°C for 2 hours, then cool, and grind the cooled mixture to a powder with a particle size of 400 mesh; spray-dry the uniformly dispersed reduced graphene oxide aqueous dispersion (5% by mass) and uniformly disperse it in the above mixing Put the powder on the powder, and then place the powder at 65°C for 1 hour, and then put it at 150°C to solidify the composite powder for 5 hours, pass the solidified powder through a screw extruder, and extrude the carbon skateboard blank of the required specification. The carbon slide plate blank is baked and released...

Embodiment 3

[0032] In the present embodiment, the preparation method of composite slide plate is as follows:

[0033] Prepare materials according to the following mass parts: 15 parts of silicon carbide powder, 50 parts of pitch coke powder, 5 parts of graphite powder, and 30 parts of high-temperature pitch. After mixing silicon carbide powder, pitch coke powder and graphite powder evenly, add molten high-temperature pitch, Mix evenly at 150°C for 1.5 hours, then cool, and grind the cooled mixture to a powder with a particle size of 350 mesh; uniformly dispersed reduced graphene oxide aqueous dispersion (6% by mass) is uniformly dispersed in the above-mentioned Put the powder on the mixed powder, then pre-dry the powder at 80°C for 1 hour, and then place it at 150°C to solidify the composite powder for 6 hours, pass the cured powder through a screw extruder, and extrude the carbon skateboard blank of the required specification , the carbon slide plate blank is baked and released from the ...

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Abstract

The invention discloses a preparation method of a composite pantograph pan of an electric locomotive. The preparation method comprises the following steps of (1), uniformly mixing silicon carbide powder, pitch coke powder and graphite powder, then adding molten high-temperature pitch, uniformly mixing at 130 to 150 DEG C, subsequently, cooling, and grinding a cooled mixture into powder with the granularity of 350 to 400 meshes, wherein the contents, in parts by weight, of the silicon carbide powder, the pitch coke powder, the graphite powder and the high-temperature pitch are 5 to 15 parts, 50to 60 parts, 5 to 10 parts and 25 to 30 parts respectively; (2), uniformly dispersing uniformly dispersed reduced graphene oxide dispersion liquid onto the powder obtained in the step (1) through spray drying; (3), predrying the powder obtained in the step (2), curing at 150 to 160 DEG C, enabling the cured powder to pass through a screw extruder, extruding to obtain a carbon pan blank of a required specification, roasting the carbon pan blank, and then discharging from a furnace, so that the composite pan is obtained. The preparation method provided by the invention is brief in process; a product is excellent in performance and good in self-lubricating property, further, does not damage a conducting wire, and is suitable to massively produce, and production equipment is simple.

Description

technical field [0001] The invention belongs to the field of electric locomotive pantograph slide plates, and in particular relates to a preparation method of electric locomotive pantograph composite slide plates. [0002] technical background [0003] The pantograph slide is a key part in the catenary system, which is installed on the top of the pantograph and directly contacts with the catenary wire to obtain electric energy for the electric locomotive. Due to its unique working principle and harsh working environment , has very strict requirements on material selection, and the pantograph slide generally needs to meet the following requirements: good electrical conductivity, good arc burn resistance, high anti-friction and wear resistance, good environmental adaptability, etc. The current-carrying friction and wear of the slide plate and the wire is not only related to the mechanism of sliding friction and wear between materials that are compatible with each other, but als...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L5/20C04B35/532C04B35/622
CPCB60L5/205B60L2200/26C04B35/532C04B35/622C04B2235/3826C04B2235/425
Inventor 龚勇陈建李春林金永中刘平廖明东李琳周孝林
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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