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High thermal conductivity heat radiator aluminum profile, preparation method thereof and heat radiator

A heat sink and high thermal conductivity technology, which is applied in the field of aluminum alloy, can solve the problems of limited application and high cost, and achieve the effect of reducing lattice distortion and internal stress, reducing internal stress and improving thermal conductivity

Active Publication Date: 2019-10-22
GUANGDONG JMA ALUMINUM PROFILE FACTORY GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • High thermal conductivity heat radiator aluminum profile, preparation method thereof and heat radiator
  • High thermal conductivity heat radiator aluminum profile, preparation method thereof and heat radiator
  • High thermal conductivity heat radiator aluminum profile, preparation method thereof and heat radiator

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preparation example Construction

[0036] refer to figure 1 , the invention discloses a method for preparing an aluminum profile of a high thermal conductivity radiator, which comprises the following steps:

[0037] S1: Prepare raw materials according to the ratio for use;

[0038] Wherein, the raw material formula in weight percentage is as follows:

[0039] Si 0.4-0.5%, Fe≤0.25%, Cu≤0.1%, Mn≤0.03%, Mg 0.45-0.6%, Cr≤0.03%, Zn≤0.1%, Ti≤0.1%, and the balance is aluminum.

[0040] Some functional elements are usually added to aluminum alloys to improve the mechanical properties and processing properties of aluminum alloys. These elements will replace Al atoms. Due to the difference in diameter between impurity elements and Al atoms, it will cause lattice distortion and form internal stress. At the same time, some elements will form new phases and exist in the aluminum alloy, causing lattice distortion. The heat conduction is realized through the movement of electrons in the aluminum alloy, and during the movem...

Embodiment 1

[0075] This embodiment provides a high thermal conductivity radiator aluminum profile, the preparation method of which is:

[0076] (1) Raw materials are prepared according to the ratio for subsequent use, wherein the formula is:

[0077] Si 0.4%, Fe 0.25%, Cu 0.1%, Mn 0.05%, Mg 0.45%, Cr 0.03%, Zn 0.1%, Ti0.1%; the balance is aluminum.

[0078] (2) melting and casting raw materials to obtain aluminum cast rods;

[0079] (3) Extruding the cast aluminum rod to obtain an aluminum alloy blank; wherein, the extrusion temperature is 490° C., and the extrusion speed is 2 m / min;

[0080] (4) straightening the aluminum alloy body, wherein the straightening amount is 0.8%;

[0081] (5) Straightening the straightened aluminum alloy;

[0082] (6) Aging treatment is performed on the straightened aluminum alloy body to obtain a finished aluminum profile for a heat sink with high thermal conductivity; wherein, the aging treatment temperature is 200° C. and the time is 5 hours.

Embodiment 2

[0084] This embodiment provides a high thermal conductivity radiator aluminum profile, the preparation method of which is:

[0085] (1) Raw materials are prepared according to the ratio for subsequent use, wherein the formula is:

[0086] Si 0.5%, Fe 0.1%, Cu 0.03%, Mn 0.03%, Mg 0.6%, Cr 0.03%, Zn 0.03%, Ti0.03%; the balance is aluminum.

[0087] (2) melting and casting raw materials to obtain aluminum cast rods;

[0088] (3) Extruding the cast aluminum rod to obtain an aluminum alloy blank; wherein, the extrusion temperature is 550° C., and the extrusion speed is 10 m / min;

[0089] (4) straightening the aluminum alloy body, wherein the straightening amount is 3%;

[0090] (5) Straightening the straightened aluminum alloy;

[0091] (6) Aging treatment is performed on the straightened aluminum alloy body to obtain a finished aluminum profile for a heat sink with high thermal conductivity; wherein, the aging treatment temperature is 240° C. and the time is 2 hours.

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Abstract

The invention discloses a preparation method of a high thermal conductivity heat radiator aluminum profile. The preparation method of the high thermal conductivity heat radiator aluminum profile includes: (1) preparing raw material for standby application according to a proportion; (2) performing fusion casting on the raw materials to obtain an aluminum cast rod; (3) squeezing the aluminum cast rod to obtain an aluminum alloy blank body; (4) aligning all parts of the aluminum alloy blank body, wherein alignment rate is 0.8%-3%; (5) straightening the aluminum alloy blank body after being aligned; (6) performing aging treatment on the aluminum alloy blank body after being straightened, and then obtaining the high thermal conductivity heat radiator aluminum profile finished product. Correspondingly, the invention further discloses the high thermal conductivity heat radiator aluminum profile and a heat radiator. By regulating and controlling the formula and process of aluminum alloy, the preparation method of the high thermal conductivity heat radiator aluminum profile reduces lattice distortion, reduces internal stress, and reduces scattering to free electrons, thereby raising the heat conductivity coefficient of the aluminum alloy, and meanwhile guaranteeing good mechanical performance and processing performance.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to an aluminum profile for a heat sink with high thermal conductivity, a preparation method thereof, and a heat sink. Background technique [0002] Aluminum alloy radiators are widely used in various fields, such as air-conditioning radiators, car radiators, LED radiators and so on. Traditional aluminum alloy radiators are mostly cast and stamped. Although the process is simple and the cost is low, the thermal conductivity is low, usually around 90W / m·K, so that the thermal conductivity is poor. In order to improve this defect, in the prior art, pure aluminum (purity > 99%) is often used in occasions with high thermal conductivity requirements. Its thermal conductivity can reach more than 220W / m K, but its fluidity and castability are not good. And the strength is poor, easy to deform. [0003] With the development of aluminum alloy technology, the performance of alumin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/08C22F1/043C22F1/047C22F1/05F28F21/08
CPCC22C21/02C22C21/08C22F1/043C22F1/047C22F1/05F28F21/084
Inventor 陈力邹尚锋严兰芳李永超
Owner GUANGDONG JMA ALUMINUM PROFILE FACTORY GRP
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