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Method for preparing copper based pantograph pan material

A pantograph sliding plate, copper-based technology, applied in the field of accessories used in transportation vehicles, can solve the problems of high resistivity and poor impact toughness, and achieve the effects of low resistivity, low wear and excellent electrical conductivity.

Inactive Publication Date: 2011-05-18
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The skateboard has excellent friction and wear properties, but poor impact toughness and high electrical resistivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mix dispersion-strengthened copper powder, copper-coated graphite powder and additives tin and lead in a certain proportion, and the content of copper-coated graphite as a lubricating material is 20wt%, wherein the particle size of copper-coated graphite is 100 μm, and the copper content is 60 wt%. The content of tin is 4wt%, the content of additive lead is 2 wt%, and the balance of dispersion-strengthened copper is used. The mixing time is 5 hours. Hot pressing at 30MPa, holding pressure for 30 minutes, can get electric locomotive pantograph slide material with good performance;

Embodiment 2

[0025] Mix dispersion-strengthened copper powder, copper-coated graphite powder and additives tin and lead in a certain proportion, and the content of copper-coated graphite as a lubricating material is 25wt%, wherein the particle size of copper-coated graphite is 125μm, the copper content is 50wt%, and the additive tin The content of lead is 5wt%, the content of additive lead is 3wt%, and the dispersion strengthened copper is the balance. The mixing time is 8 hours. Carry out hot pressing, and the holding time is 40 minutes, and the electric locomotive pantograph slide plate material with good performance can be obtained;

Embodiment 3

[0027] Mix dispersion-strengthened copper powder, copper-coated graphite powder and additives tin and lead in a certain proportion, and the content of copper-coated graphite as a lubricating material is 30wt%, wherein the particle size of copper-coated graphite is 150 μm, the copper content is 40wt%, and the additive tin The content of lead is 6wt%, the content of additive lead is 4wt%, and the dispersion strengthened copper is the balance. The mixing time is 10 hours. Under hot pressing, the holding time is 50min, and the electric locomotive pantograph slide material with good performance can be obtained.

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Abstract

The invention provides a method for preparing a copper based pantograph pan material, belonging to the technical field of the preparation of a copper graphite self-lubricating composite material. The copper based pantograph pan material is prepared by the steps of: mixing dispersion-strengthening copper powder used as a base body, copper plated graphite used as a wear-reducing material and tin and lead powder used as additives uniformly by a mixing machine and then thermally pressing and sintering. The dispersion-strengthening copper powder is replaced with the traditional pure copper powder as the base body and has more excellent performance. Because the dispersion-strengthening copper has excellent high-temperature strength, rigidity and wear resistance and fusion welding resistance, the pantograph pan material prepared by adopting the dispersion-strengthening copper powder as the base body has more excellent wear resistance, fusion welding resistance and electrolytic corrosion resistance. The preparation method is simple, is easy to control the process, has no pollution, and is suitable for massive production.

Description

[0001] technical field [0002] The invention belongs to the technical field of preparation of copper-graphite self-lubricating composite materials. The composite material can be used to prepare electric locomotive pantograph slide plates, and belongs to an accessory used by transportation vehicles. [0003] Background technique [0004] With the rapid development of my country's high-speed railways, as the most important current-collecting components of high-speed trains, the amount of pantograph slides is increasing. Currently known pantograph slides are as follows: [0005] 1. Pure metal skateboard [0006] This type of skateboard is made of steel, copper and other materials. It is a pantograph skateboard product used by electric locomotives in the 1960s in my country. This type of skateboard has high mechanical strength, convenient material acquisition, long service life and low cost. However, due to the similar material of the slide plate and the wire, strong aff...

Claims

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Application Information

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IPC IPC(8): B22F3/02
Inventor 郭志猛罗骥曹慧钦杨薇薇
Owner UNIV OF SCI & TECH BEIJING
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