Copper-impregnated carbon slider and preparation method thereof

A carbon sliding plate and copper immersion technology, applied in the field of material processing, can solve the problems of increasing resistivity, increased surface friction, poor wettability, etc., and achieve the effect of improving wettability, good mechanical properties and electrical properties

Active Publication Date: 2019-11-22
四川广通碳复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] A. The wettability between the copper liquid and the carbon sliding plate material is poor. If no measures are taken, the copper liquid is not easy to completely infiltrate into the pores, and the adhesion between the copper liquid and the pores becomes poor after cooling and shrinkage;
[0023] B. Boiling in the boiling metal salt

Method used

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  • Copper-impregnated carbon slider and preparation method thereof
  • Copper-impregnated carbon slider and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0069] The invention discloses a method for preparing a copper-impregnated carbon sliding plate, which comprises the following steps:

[0070] (1) Take the basic raw materials for preparing the copper-impregnated carbon slide plate, add them to the mixing equipment according to the weight ratio, and mix them evenly in the mixing equipment to obtain the mixture; the basic raw materials include pitch coke, petroleum coke, flake graphite, carbon fiber, binder and Pore ​​former

[0071] (2) Press and shape the mixture, heat and dry after shaping; obtain a dried blank; then, the dried blank is subjected to high-pressure forming in a mold to obtain a formed blank;

[0072] (3) Perform high-temperature sintering of the formed blank, and vaporize the pore former in the formed blank to form pores in the formed blank to obtain a basic carbon slide plate;

[0073] (4) Preparation of infiltration aid: disperse magnesium aluminum silicate powder and iron boride powder in water to form a mixed liqu...

Example Embodiment

[0083] Example 1: Preparation of basic carbon skateboard

[0084] The basic raw material composition of the basic carbon skateboard:

[0085] 25 parts of pitch coke; 10 parts of petroleum coke; 18 parts of flake graphite;

[0086] 2 parts of carbon fiber; 13 parts of phenolic resin; 6 parts of 250 mesh bamboo charcoal powder.

[0087] (1) Take the basic raw materials and add them to the kneading equipment, and mix them evenly in the kneading equipment to obtain a mixture;

[0088] (2) The mixture is compacted and shaped. The compaction can be made by using a roller extruder. After being squeezed into a sheet, it is poured into a cylinder or a square tube and used for compaction. The compaction operation pressure is 1atm, that is, 1 Atmospheric pressure. After shaping, heat preservation and drying at 80°C; obtain a dry blank;

[0089] Apply the external release agent polyvinyl alcohol to the mold, and then put the dry blank into the mold for high-pressure molding under a pressure of 8 a...

Example Embodiment

[0091] Example 2: Preparation of copper-impregnated carbon sliding plate

[0092] (1) Preparation of infiltration aid: disperse 90 g of iron boride powder and 10 g of magnesium aluminum silicate powder into 1000 g of water to form a mixed liquid with good fluidity, which is the dispersion of infiltration aid;

[0093] (2) Put the basic carbon sliding plate into the dispersion of the wetting aid, and let the dispersion of the wetting aid enter the pores of the basic carbon sliding plate under high pressure conditions of 2atm. After immersing for 3 minutes, take out the basic carbon sliding plate and clean the surface of the basic carbon sliding plate. After cleaning the surface of the dispersion of the infiltration aid, vacuum sintering at 2000°C to remove the moisture in the pores, and then disperse the infiltration aid on the surface of the pores after melting;

[0094] (3) Repeat step (2) 3 times; get carbon skateboard;

[0095] (4) Put the carbon slide plate in the copper immersion...

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Abstract

The invention discloses a copper-impregnated carbon slider which is prepared from a basic raw material and an infiltration aid, wherein the basic raw material comprises 20-30 parts of pitch coke; 10 to 15 parts of petroleum coke; 15 to 20 parts of crystalline flake graphite; 2-5 parts of carbon fibers; 10 to 20 parts of a binder; and 5-10 parts of a pore-forming agent. The components of the carbonslider composite material are optimized, bamboo charcoal powder is used as a pore-forming agent to reduce impurity retention in pores, copper liquid can be infiltrated into the pores through a high-pressure copper leaching process to form a copper-containing carbon slider, and the carbon slider has good mechanical properties and electrical properties.

Description

technical field [0001] The invention relates to the technical field of material processing, in particular to a copper-impregnated carbon slide plate and a preparation method thereof. Background technique [0002] The pantograph is the electrical equipment used by the electric traction locomotive to obtain electric energy from the catenary, and is installed on the roof of the locomotive or motor car. Pantographs can be divided into single-arm bows and double-arm bows, both of which are composed of slide plates, upper frames, lower arm rods (lower frames for double-arm bows), underframes, bow springs, transmission cylinders, supporting insulators and other components. The pantograph slide is an important current-collecting component of the electric locomotive. It is installed on the uppermost part of the pantograph and directly contacts the contact wire. In the sliding state, it obtains 100-1000A current from the contact wire to supply power to the locomotive. [0003] The el...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/532C04B35/622C04B38/06C04B41/90
CPCC04B35/532C04B35/622C04B35/83C04B38/068C04B41/009C04B41/52C04B41/90C04B2235/425C04B2235/48C04B2235/5248C04B2235/602C04B2235/656C04B35/52C04B41/5062C04B41/4535C04B41/5024C04B41/0072C04B41/5127C04B41/4523
Inventor 刘凌江
Owner 四川广通碳复合材料有限公司
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