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Aluminum alloy material with high strength and high thermal conductivity, preparation method thereof, and heat sink

An aluminum alloy material, high thermal conductivity technology, applied in the field of aluminum alloy, can solve the problems of inapplicable production of radiators, small cross-sectional area of ​​radiators, complicated production process, etc., to eliminate unbalanced solidification eutectic structure, improve thermal conductivity, The effect of strengthening the strength

Active Publication Date: 2020-12-11
GUANGDONG WEIYE ALUMINUM FACTORY GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it adds a large amount of rare earth metals and precious metals to the formula, and the cost is high; and its elongation is only 4~8%, which greatly limits its application in the field of radiators with complex shapes
[0004] On the other hand, the existing aluminum alloy radiators mostly adopt casting and stamping forming; among them, although the casting process can produce radiators of various complex shapes, the production process is complicated and the production efficiency is low; although stamping molding has high production efficiency, However, it cannot be applied to the production of radiators with more complex shapes, so the cross-sectional area of ​​the radiators produced is small, resulting in low heat transfer coefficients

Method used

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  • Aluminum alloy material with high strength and high thermal conductivity, preparation method thereof, and heat sink

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preparation example Construction

[0043] For this reason, the invention provides a kind of preparation method of the aluminum alloy material of high strength and high thermal conductivity, see figure 1 , which includes the following steps:

[0044] S1: Prepare raw materials according to the proportion for use;

[0045] Wherein, the raw material formula in weight percentage is as follows:

[0046] Si 2.5~5%, Mg 0.8~1.8%, Sr 0.01~0.1%, Fe 0.05~0.5%, Ti 0.01~0.5%, Cu 0.01~0.1%, Mn 0.01~0.05%, the balance is aluminum;

[0047] Specifically, the mechanical properties of the aluminum alloy in the present invention are mainly through the Mg 2 Si phase and excess Si content guarantee, the present invention controls Si content to be 2.5~5%, and Mg content is 0.8~1.8%; The present invention has promoted Si surplus, has promoted the yield strength and the tensile strength of aluminum alloy; Simultaneously due to this The content of other elements such as Fe, Cu, Mn, Zn is low in the invention, in the manufacturing pro...

Embodiment 1

[0095] This embodiment provides an aluminum alloy material with high strength and high thermal conductivity, the preparation method of which is as follows:

[0096] (1) Raw materials are prepared according to the proportion for use; among them, the formula of raw materials in weight percentage is as follows:

[0097] Si 2.5%, Mg 0.8%, Sr 0.01%, Fe 0.05%, Ti 0.01%, Cu 0.01%, Mn 0.01%, and the balance is aluminum;

[0098] (2) Heating the furnace to 720°C for heat preservation, feeding materials according to the raw material formula, and heating until melting; obtaining the first alloy liquid;

[0099] (3) Homogenizing the first alloy liquid, removing slag, refining, and standing still to obtain the second alloy liquid; wherein, the refining temperature is 720°C and the time is 20 minutes;

[0100] (4) Casting the second molten alloy to obtain a cast billet;

[0101] (5) Homogenizing the cast billet body to obtain an aluminum cast rod; wherein, the homogenizing treatment tempe...

Embodiment 2

[0107] This embodiment provides an aluminum alloy material with high strength and high thermal conductivity, the preparation method of which is as follows:

[0108](1) Raw materials are prepared according to the proportion for use; among them, the formula of raw materials in weight percentage is as follows:

[0109] Si 5%, Mg 1.8%, Sr 0.1%, Fe 0.5%, Ti 0.5%, Cu 0.1%, Mn 0.05%, and the balance is aluminum;

[0110] (2) Heating the furnace to 750°C for heat preservation, feeding materials according to the raw material formula, and heating until melting; obtaining the first alloy liquid;

[0111] (3) Homogenizing the first alloy liquid, removing slag, refining, and standing still to obtain the second alloy liquid; wherein, the refining temperature is 750°C and the time is 30 minutes;

[0112] (4) Casting the second molten alloy to obtain a cast billet;

[0113] (5) Homogenizing the cast billet body to obtain cast aluminum rods; wherein, the homogenizing treatment temperature is...

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Abstract

The invention discloses a preparation method of an aluminum alloy material with high strength and high thermal conductivity. The method comprises the steps of preparing raw materials in proportion forlater use; melting; refining; standing; casting to obtain a casting rod blank; homogenizing the casting rod blank to obtain an aluminum casting rod; and extruding, straightening, straightening and aging the aluminum casting rod to obtain the aluminum alloy material finished product with high strength and high thermal conductivity. Correspondingly, the invention also discloses the aluminum alloy material with high strength and high thermal conductivity and a radiator processed by the aluminum alloy material. By comprehensively regulating and controlling the formula and the production process,the aluminum alloy material with tensile strength greater than or equal to 300MPa, yield strength greater than or equal to 280MPa, elongation greater than or equal to 8% and thermal conductivity of 210-225W / m.K is obtained.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to an aluminum alloy material with high strength and high thermal conductivity, a preparation method thereof, and a radiator. Background technique [0002] With the rapid development of the electronics industry, electronic components are gradually developing towards miniaturization, multi-function and high integration. The operating power of electronic devices is getting higher and higher, and the heat dissipation conditions are becoming more and more harsh. LED lighting equipment and communication base stations all demand a new generation of lightweight and high thermal conductivity materials. Existing radiators mostly adopt aluminum alloy radiators. However, the thermal conductivity of traditional aluminum alloy radiators is low, usually below 150 W / m·K, which is difficult to meet the needs of use. [0003] In order to improve this defect, Chinese patent CN103352144A dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22F1/043
CPCC22C21/02C22F1/043
Inventor 冯扬明黎家行梁美婵
Owner GUANGDONG WEIYE ALUMINUM FACTORY GRP
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