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Method for preparing pantograph slide plate composite carbon core of electric locomotive (including high-speed train) by using cold isostatic pressing process

A technology of pantograph slide plate and cold isostatic press, which is applied to electric vehicles, current collectors, vehicle parts, etc., and can solve problems such as low service life, micro cracks, and slide plate breakage

Inactive Publication Date: 2015-04-08
赵飞 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to achieve the integral skateboard with a length of 1250mm, the pure carbon skateboard currently mainly adopts the extrusion process to produce a billet of 38×38×1250mm. The billet produced by the extrusion process is straight, and the pure carbon skateboard has low mechanical strength and poor impact resistance. The hard point of the wire during operation is likely to cause the slide to break and rupture, and the service life is low, especially in the rainy season and humid areas, it is easy to pull the groove locally, and pantograph-catenary accidents often occur
[0009] At present, most of the carbon cores of electric locomotive (including high-speed train) pantograph skateboards produced at home and abroad adopt the extrusion molding process of extrusion equipment to produce integral skateboards with a length of 1250mm, and there are certain defects. The material density is low, and some have Micro cracks, poor mechanical strength of the material, there will be certain safety hazards when used on the electric locomotive pantograph

Method used

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  • Method for preparing pantograph slide plate composite carbon core of electric locomotive (including high-speed train) by using cold isostatic pressing process
  • Method for preparing pantograph slide plate composite carbon core of electric locomotive (including high-speed train) by using cold isostatic pressing process
  • Method for preparing pantograph slide plate composite carbon core of electric locomotive (including high-speed train) by using cold isostatic pressing process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] step one

[0074] Select formula 1 according to the electrical conductivity, mechanical strength and self-lubricating characteristics of the carbon core material of the skateboard:

[0075] Flake graphite 15%; acicular graphite 15%; carbon fiber 0.5%; carbon powder 69.5%; the particle size of flake graphite, acicular graphite and carbon powder is 180---300 mesh.

[0076] step two

[0077] The high-efficiency mechanical alloy grinding process is used to process formula 1. Various carbon materials in formula 1 have different characteristics. This process effectively combines carbon materials with different characteristics to form a variety of complementary advantages. The comprehensive requirements for the carbon core material of the electric locomotive pantograph slide plate have a particle size of 180-300 mesh.

[0078] step three

[0079] Using the cold isostatic pressing molding process to prepare carbon core blanks:

[0080] After the powder treatment is complete...

Embodiment 2

[0085] step one

[0086] Select formula 2 according to the electrical conductivity, mechanical strength and self-lubricating characteristics of the carbon core material of the skateboard:

[0087] Flake graphite 30%; high-purity graphite 25%; carbon fiber 2.0%; carbon powder 43%;

[0088] The particle size of flake graphite, high-purity graphite and carbon powder is 180---250 mesh.

[0089] step two

[0090] The high-efficiency mechanical alloy grinding process is used to process formula 2. Various carbon materials in formula 2 have different characteristics. This process effectively combines carbon materials with different characteristics to form a variety of complementary advantages. The comprehensive requirements for the carbon core material of the electric locomotive pantograph slide plate, the particle size is 180-220 mesh.

[0091] step three

[0092] Using the cold isostatic pressing molding process to prepare carbon core blanks:

[0093] After the powder treatment...

Embodiment 3

[0098] step one

[0099] Select formula three according to the electrical conductivity, mechanical strength and self-lubricating characteristics of the carbon core material of the skateboard:

[0100] Flake graphite 20%; needle graphite 20%; carbon fiber 1%; carbon powder 59%;

[0101] The particle size of flake graphite, needle graphite and carbon powder is 180---230 mesh.

[0102] step two

[0103] The high-efficiency mechanical alloy grinding process is used to process formula 3. Various carbon materials in formula 3 have different characteristics. This process effectively combines carbon materials with different characteristics to form a variety of complementary advantages. The comprehensive requirements for the carbon core material of the electric locomotive pantograph slide plate have a particle size of 180-240 mesh.

[0104] step three

[0105] Using the cold isostatic pressing molding process to prepare carbon core blanks:

[0106] After the powder treatment is co...

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Abstract

The invention relates to a method for preparing a pantograph slide plate composite carbon core of an electric locomotive (including a high-speed train) by using a cold isostatic pressing process. The method uses various carbon materials for producing a pantograph slide plate carbon core material by a certain formula, or uses a carbon material and branch-shaped nickel powder or copper powder for burdening by a certain formula requirement to prepare the pantograph slide plate composite carbon core; the process comprises the following steps: the ingredients are treated by using a grinding process or a planetary mixing process; a mold sleeve is produced by requirements of a cold isostatic press; then, the materials are evenly added through a vibrator into the mold sleeve; the mold sleeve is put in the cold isostatic press; the compression molding is finished by the cold isostatic press to prepare a composite carbon core blank; and the blank is roasted and dipped to prepared a high-performance pantograph slide plate carbon core composite material of the electric locomotive. The carbon core has the advantages of good electric conductivity, heat resistance, electric arc resistance, high mechanical strength, good lubricating performance and wearing resistance, low production cost and easy realization of industrialization.

Description

technical field [0001] The invention relates to the technical fields of material processing and composite materials, in particular to a method for preparing a composite material carbon core of a pantograph slide plate of an electric locomotive (including a high-speed train). Background technique [0002] my country's electric locomotives and high-speed trains have developed rapidly, and the mileage of electric locomotive railways has exceeded 100,000 kilometers, and it is still expanding rapidly. The pantograph slide is an important current-collecting component for electric locomotives to obtain power sources, and the quality of the slide is a key factor affecting the quality of current collection. The pantograph slide is not only a kind of electrical contact material, but also a kind of wear-resistant and anti-friction material; it should not only have good electrical conductivity and current collection capacity, but also have good comprehensive mechanical properties. The ...

Claims

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Application Information

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IPC IPC(8): B60L5/20C04B35/83C04B35/52
Inventor 赵飞赵郅磊
Owner 赵飞
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