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Heat-conducting aluminum alloy and application thereof

A technology of aluminum alloys and alloying elements, applied in the field of aluminum alloys, can solve problems such as difficulty in meeting the needs of high strength and high thermal conductivity of electronic and electrical products

Active Publication Date: 2018-05-29
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] As electronic and electrical products tend to be miniaturized in recent years, the thermal conductivity of existing conventional aluminum alloy materials such as ADC12 on the market is only 96W / (m·K), which has been difficult to meet the high-strength and high-thermal conductivity requirements of electronic and electrical products, so There is an urgent need to develop a new aluminum alloy material that has high thermal conductivity while having high mechanical properties and low cost

Method used

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  • Heat-conducting aluminum alloy and application thereof
  • Heat-conducting aluminum alloy and application thereof

Examples

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Embodiment 1

[0024] In this embodiment, based on 100 parts by weight of the total weight of the thermally conductive aluminum alloy, it contains 5.0 parts by weight of Si, 1.0 parts by weight of Fe, 0.2 parts by weight of Mg, 0.05 parts by weight of Zn, 0.05 parts by weight of Mn, and 0.05 parts by weight parts of Sr, 0.05 parts by weight of Cu and the balance of Al.

[0025] Firstly, preheat the furnace at 400°C for 25 minutes, and purge it with argon, add the corresponding weight of pure aluminum ingots for melting, when the temperature of the pure aluminum liquid reaches 800°C, let it stand at constant temperature for 25 minutes to fully melt the pure aluminum ingots ;Reduce the temperature of the furnace to 760°C, add 5.0 parts by weight of pure silicon, let it stand at constant temperature for 25 minutes, and continue to stir for 15 minutes after it melts; when the temperature of the furnace is lowered to 700°C, add the remaining master alloy, and let it stand after melting completely ...

Embodiment 2

[0027] In this embodiment, based on 100 parts by weight of the total weight of the thermally conductive aluminum alloy, it contains 11.0 parts by weight of Si, 0.4 parts by weight of Fe, 1.0 parts by weight of Mg, 0.05 parts by weight of Zn, 0.05 parts by weight of Mn, and 0.05 parts by weight parts of Sr, 0.05 parts by weight of Cu and the balance of Al.

[0028] Firstly, preheat the furnace at 400°C for 25 minutes, and purge it with argon, add the corresponding weight of pure aluminum ingots for melting, when the temperature of the pure aluminum liquid reaches 800°C, let it stand at constant temperature for 25 minutes to fully melt the pure aluminum ingots ;Reduce the temperature of the furnace to 760°C, add 11.0 parts by weight of pure silicon, let it stand at constant temperature for 25 minutes, and continue to stir for 15 minutes after it melts; Add 1.0 parts by weight of magnesium at last, after melting completely, continue stirring for 8 minutes, remove scum, add refini...

Embodiment 3

[0030] In this embodiment, based on the total weight of the thermally conductive aluminum alloy as 100 parts by weight, it contains 8.0 parts by weight of Si, 0.4 parts by weight of Fe, 0.4 parts by weight of Mg, 0.008 parts by weight of Zn, 0.008 parts by weight of Mn, and 0.05 parts by weight parts of Sr, 0.008 parts by weight of Cu and the balance of Al.

[0031]Firstly, preheat the furnace at 400°C for 25 minutes, and purge it with argon, add the corresponding weight of pure aluminum ingots for melting, when the temperature of the pure aluminum liquid reaches 800°C, let it stand at constant temperature for 25 minutes to fully melt the pure aluminum ingots ;Reduce the temperature of the furnace to 760°C, add 8.0 parts by weight of pure silicon, let it stand at constant temperature for 25 minutes, and continue to stir for 15 minutes after it melts; when the temperature of the furnace is lowered to 700°C, add the remaining master alloy, and let it stand after melting completel...

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Abstract

The invention discloses a heat-conducting aluminum alloy and application thereof. The heat-conducting aluminum alloy comprises alloying elements, unavoidable impurities and the balance aluminum element. By taking the total weight of the heat-conducting aluminum alloy as a benchmark, the alloying elements comprise 5.0-11.0% of Si, 0.4-1.0% of Fe, 0.2-1.0% of Mg, less than 0.1% of Zn, less than 0.1%of Mn, less than 0.1% of Sr and less than 0.1% of Cu. According to the prepared heat-conducting aluminum alloy, the tensile strength is not less than 250 MPa, the yield strength is not less than 150MPa, the ductility is not less than 3.5%, and the heat conducting coefficient is not less than 150 W / (m.K); and the mechanical property is high, the flow forming performance is good, and good heat conductivity can further be maintained through repeated recycling.

Description

technical field [0001] The present disclosure relates to the technical field of aluminum alloys, in particular, to a heat-conducting aluminum alloy and its application. Background technique [0002] Aluminum alloy materials are widely used in aviation, aerospace, electronic and electrical products, automobiles, machinery manufacturing and other fields because of their low density, high strength, good plasticity, electrical conductivity, thermal conductivity, and excellent corrosion resistance. [0003] As electronic and electrical products tend to be miniaturized in recent years, the thermal conductivity of conventional aluminum alloy materials such as ADC12 on the market is only 96W / (m·K), which has been difficult to meet the needs of high-strength and high-thermal conductivity of electronic and electrical products, so There is an urgent need to develop a new aluminum alloy material that has high thermal conductivity while having high mechanical properties and low cost. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02F28F21/08
CPCF28F21/08C22C21/02C22C21/04C22C2202/00F28F21/084
Inventor 郭强李运春张春萌谢勇亮
Owner BYD CO LTD
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