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Continuous hot isostatic pressing impregnation method for preparing carbon-copper composite materials with high impregnation amount

A carbon-copper composite material, hot isostatic impregnation technology, applied in the field of static pressure impregnation, can solve the problems of copper liquid loss, uncontinuous production, low efficiency, etc., and achieve the effect of continuous operation, high production efficiency and stable work

Active Publication Date: 2019-04-02
钢研昊普科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a continuous hot isostatic pressing impregnation method for preparing high-impregnated carbon-copper composite materials, which can solve the problems of uncontinuous production, low efficiency, and loss of copper liquid during cooling

Method used

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  • Continuous hot isostatic pressing impregnation method for preparing carbon-copper composite materials with high impregnation amount

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 - HIP-impregnated copper composite slide

[0050] 1. The ratio of carbon-copper composite material is 85% carbon, 15% copper (volume ratio); copper is industrial pure copper, and the copper content is greater than 99.5%;

[0051] 2. Place the copper ingot in the crucible 5, evacuate to 5Pa, heat up to 1300°C, and keep warm for 3 hours to fully melt the copper;

[0052]3. After the copper is completely melted, use the tooling system 2 to immerse the graphite to be impregnated into the molten copper in the crucible 5;

[0053] 4. Introduce argon gas to control the impregnation pressure to 20MPa, and keep it warm for 30 minutes after the temperature is stable to fully impregnate;

[0054] 5. After the impregnation is completed, remove part of the pressure to a cooling pressure of 14MPa, and control the tooling system 2 to slowly lift the impregnated carbon-copper composite material from the copper melt in the crucible 5;

[0055] 6. Under the condition that the...

Embodiment 2

[0058] Example 2-Hot Isostatic Pressing Impregnation High Wear Resistance Carbon Copper Composite Material

[0059] 1. The ratio of carbon-copper composite material is 65% carbon, 35% pure copper (volume ratio); copper is industrial pure copper, and the copper content is greater than 99.5%;

[0060] 2. Place the copper ingot in the crucible 5, evacuate to 20Pa, heat up to 1200°C, and keep warm for 2 hours to fully melt the copper;

[0061] 3. After the copper is completely melted, use the tooling system 2 to immerse the carbon / carbon composite material to be impregnated into the molten copper in the crucible 5;

[0062] 4. Introduce argon gas to control the impregnation pressure to 15MPa, and keep it warm for 15 minutes after the temperature is stable to fully impregnate;

[0063] 5. After the impregnation is completed, remove part of the pressure until the cooling pressure is 5MPa, and control the tooling system to slowly extract the impregnated carbon-copper composite mater...

Embodiment 3

[0067] Example 3 - Carbon-copper composite material with excellent comprehensive properties of hot isostatic pressing impregnation, lubrication, electrical conductivity and wear resistance

[0068] 1. The ratio of carbon-copper composite material is 75% carbon, 25% pure copper (volume ratio); copper is industrial pure copper, and the copper content is greater than 99.5%;

[0069] 2. Place the copper ingot in the crucible 5, evacuate to 10Pa, heat up to 1250°C, and keep warm for 2.5 hours to fully melt the copper;

[0070] 3. After the copper is completely melted, use the tooling system 2 to immerse the graphite carbon material to be impregnated into the molten copper in the crucible 5;

[0071] 4. Introduce argon gas to control the impregnation pressure to 18MPa, and keep it warm for 25 minutes after the temperature is stable to fully impregnate;

[0072] 5. After the impregnation is completed, remove part of the pressure until the cooling pressure is 10MPa, and control the t...

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Abstract

The invention belongs to the technical field of composite material preparation, and in particular relates to a continuous hot isostatic impregnation method for preparing high-impregnation carbon-copper composite materials. First, the composition ratio is carried out according to the required performance, and then the copper ingot is melted in the crucible under vacuum conditions, and the carbon material to be impregnated is immersed in the molten copper by using the tooling system, and the pressure in the furnace is controlled by argon gas; after the impregnation is completed , remove part of the pressure, maintain a stable pressure, and control the tooling system to slowly lift the impregnated carbon-copper composite material from the molten copper in the crucible. At the same time, the molten copper in the impregnated material is cooled during the slow rising process. The pressure was released to normal pressure, and the impregnated carbon-copper composite was quickly taken out under argon and transferred to an argon glove box to continue cooling to room temperature. The invention can completely retain the copper melt impregnated in the carbon-copper composite material, satisfy the rapid impregnation of carbon-copper composite material products with high impregnation amount, has excellent uniformity of impregnation, and can be operated continuously.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a continuous hot isostatic pressing impregnation method for preparing high-impregnation carbon-copper composite materials. Background technique [0002] Carbon-copper composite materials combine the excellent lubricating properties of carbon materials with the excellent electrical and thermal conductivity of copper materials to obtain superior electrical and thermal conductivity, friction reduction, and anti-wear properties. They are widely used in integrated circuit substrates, high-performance brushes, and electrical switches. Contacts, engine collector rings, thyristor supporting electrodes and electric locomotive pantograph slides, etc. In recent years, my country's high-speed rail industry has developed rapidly, and carbon-copper composite skateboards have ushered in good opportunities. [0003] At present, the production process of high-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C9/00B22D23/04
CPCC22C1/1036C22C9/00B22D23/04C22C1/1073
Inventor 陈宏霞王铁军陈飞雄张德明李阳叶青吴爽任志禄靳鹏程马立良
Owner 钢研昊普科技有限公司