A kind of high thermal conductivity near-eutectic cast aluminum-silicon alloy material and production method

A technology of alloy material and production method, which is applied in the field of high thermal conductivity near-eutectic casting aluminum-silicon alloy material, can solve problems such as poor thermal conductivity, and achieve the advantages of eliminating casting stress, improving thermal conductivity, excellent casting performance and thermal conductivity. Effect

Active Publication Date: 2017-07-28
JIANGSU ZHONGSE RABILY IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Aluminum-silicon alloy has the best casting fluidity among cast aluminum alloys, and can cast castings with very complex shapes, but its thermal conductivity is poor

Method used

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  • A kind of high thermal conductivity near-eutectic cast aluminum-silicon alloy material and production method
  • A kind of high thermal conductivity near-eutectic cast aluminum-silicon alloy material and production method

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Embodiment Construction

[0024] The beneficial effects of the present invention are further illustrated in conjunction with examples.

[0025] (1) Chemical composition control:

[0026] The high thermal conductivity near-eutectic cast aluminum-silicon alloy material of the present invention is a near-eutectic aluminum-silicon alloy, which contains at least one of the three components of Sr, Ca and B. Sr, Ca and B can effectively improve the performance of the aluminum alloy. The thermal conductivity of the material. In the alloy material of the present invention, Si 8.5~13%, Sr 0.005~0.1%, Ca 0.001~0.1%, B 0.001~0.1%, Fe less than 0.7%, Mg less than 0.5%, Cu less than 0.3% %, containing less than 0.1% of Mn, less than 0.1% of Ti, less than 0.05% of other single impurity elements, less than 0.25% in total, and the rest are Al and unavoidable impurities. The foregoing percentages are all percentages by mass.

[0027] The composition contained in the alloy material of the present invention can be any ...

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Abstract

The invention relates to a near co-crystallizing type casting aluminum silicon alloy material with high heat conductivity and a production method thereof. The alloy comprises the main components including Al and Si, and is characterized by also comprising at least one of Sr, Ca and B. During casting production, the temperature of a melt is maintained within a range of 600-850 DEG C, and the alloy melt is cast into a casting mould so as to be cast into a casting; when the casting product is subjected to heat treatment, the temperature rising velocity of the heat treatment process is lower than 20 DEG C / min, and the temperature is maintained to be 100-450 DEG C and maintained for 0.5-10 hours, and then, the casting is cooled or air-cooled along with a furnace.

Description

technical field [0001] The invention relates to a production method of a high thermal conductivity near-eutectic casting aluminum-silicon alloy material. Background technique [0002] With the rapid development of electronic information, communication, automobile and other industries, consumer electronics products, LED lighting equipment, communication base stations, auto parts, etc. have a trend of miniaturization and high integration. In particular, the development of the electronic communication industry is particularly rapid. At present, 4G communication technology has begun to be popularized, and 5G will also be commercialized in the next 3 to 5 years. The operating power and calorific value of communication equipment are getting higher and higher. The requirements for lightweight and reliability are also getting higher and higher. Studies have shown that for every 2°C increase in temperature, the life of electronic components will be reduced by 10%. The application of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/02C22F1/043
Inventor 长海博文吴永福朱光磊何玉文
Owner JIANGSU ZHONGSE RABILY IND CO LTD
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