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High-thermal-conductivity and high-strength aluminum alloy material and preparation method and application thereof in radiators

An aluminum alloy material, high-strength technology, applied in the field of high thermal conductivity and high strength aluminum alloy material and its preparation, can solve the problems of reduced thermal conductivity, low hardness and strength, and achieves low cost, excellent electrical conductivity, and good sealing performance. Effect

Pending Publication Date: 2020-12-29
湖南海铝精密工业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional six-series aluminum alloy has high strength, but the thermal conductivity is significantly reduced, while the thermal conductivity of the first series aluminum alloy is high, but the hardness and strength are low, especially in the long-term high-temperature environment, the strength softening effect is obvious. The current There is a lack of aluminum alloy heat-conducting materials that can take into account both high thermal conductivity and high strength in the products. The development of high-strength and high-thermal-conduction aluminum alloys has a good market prospect

Method used

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  • High-thermal-conductivity and high-strength aluminum alloy material and preparation method and application thereof in radiators

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preparation example Construction

[0027] The preparation method of the above-mentioned high thermal conductivity and high strength aluminum alloy material comprises the following steps:

[0028] (1) Heating and melting the raw material aluminum ingot to obtain liquid aluminum, the melting temperature is 720-750°C;

[0029] (2) Remove scum on the surface of molten aluminum, according to Si: 0.36-0.39%, Mg: 0.53-0.59%, Cu: ≤0.02%, Fe: ≤0.18%, Mn: ≤0.02%, Cr≤0.01%, Zn≤ 0.01%, the balance is Al, in which the single impurity content is <0.03%, and the total impurity content is <0.10%. -50min; standing temperature: 720-740°C, time 20-40min.

[0030] (3) Filter the aluminum liquid after standing still, and then carry out water-cooled casting to obtain aluminum rods; when filtering, use a 30-mesh ceramic filter plate to filter; the conditions for water cooling include: water temperature <40°C, cooling time 1.0-1.5h.

[0031] (4) Extrude the aluminum rod after preheating; the preheating conditions include: the prehe...

Embodiment 1

[0037] An aluminum alloy material with high thermal conductivity and high strength, which contains the following chemical composition by mass percentage: Si: 0.36%, Mg: 0.53%, Cu: 0.02%, Fe: 0.18%, Mn: 0.02%, Cr0.01%, Zn0 .01%, the balance is Al, in which the individual impurity content is <0.03%, and the total impurity content is <0.10%.

[0038] The preparation method of the above-mentioned high thermal conductivity and high strength aluminum alloy material comprises the following steps:

[0039] (1) Heating and melting the raw material aluminum ingot to obtain liquid aluminum, the melting temperature is 720°C;

[0040] (2) Remove scum on the surface of molten aluminum, according to Si: 0.36%, Mg: 0.53%, Cu: 0.02%, Fe: 0.18%, Mn: 0.02%, Cr: 0.01%, Zn: 0.01%, and the balance is Al , in which the single impurity content <0.03%, the total impurity content <0.10%, adjust the alloy element content in the molten aluminum, refine and stand; the refining temperature is 730 ° C, the...

Embodiment 2

[0044] An aluminum alloy material with high thermal conductivity and high strength, which contains the following chemical composition by mass percentage: Si: 0.39%, Mg: 0.59%, Cu: <0.02%, Fe: <0.18%, Mn: <0.02%, Cr <0.01 %, Zn<0.01%, the balance is Al, in which the single impurity content is <0.03%, and the total impurity content is <0.10%.

[0045] The preparation method of the above-mentioned high thermal conductivity and high strength aluminum alloy material comprises the following steps:

[0046] (1) Heating and melting the raw material aluminum ingot to obtain aluminum liquid, the melting temperature is 750°C;

[0047](2) Remove scum on the surface of molten aluminum, according to Si: 0.39%, Mg: 0.59%, Cu: <0.02%, Fe: <0.18%, Mn: <0.02%, Cr <0.01%, Zn <0.01%, and the rest The amount is Al, where the individual impurity content is <0.03%, and the total impurity content is <0.10%. Adjust the content of alloying elements in the molten aluminum, refine and stand; the refinin...

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Abstract

The invention belongs to the field of aluminum alloy material preparation and particularly discloses a high-thermal-conductivity and high-strength aluminum alloy material and a preparation method andapplication thereof in radiators. The high-thermal-conductivity and high-strength aluminum alloy material disclosed by the invention comprises the following chemical components of, by mass, 0.36%-0.39% of Si, 0.53%-0.59% of Mg, less than or equal to 0.02% of Cu, less than or equal to 0.18% of Fe, less than or equal to 0.02% of Mn, less than or equal to 0.01% of Cr, less than or equal to 0.01% of Zn and the balance Al, wherein the content of a single impurity is less than 0.03%, and the total impurity content is less than 0.10%. The preparation method disclosed by the invention is low in cost and short in preparation time, and the aluminum alloy material obtained according to the preparation method is good in thermal conductivity and high in strength and can be widely applied to the fieldsof radiators and the like.

Description

technical field [0001] The invention belongs to the field of aluminum alloy material preparation, and specifically discloses a high-thermal-conductivity high-strength aluminum alloy material, a preparation method thereof, and an application in a radiator. Background technique [0002] Existing aluminum alloys are increasingly used as heat-conducting materials, and are mostly used in heat-dissipating plates and the like. Commonly used aluminum alloys are difficult to maintain high thermal conductivity and high strength under high-strength conditions. At present, copper and copper alloys are commonly used as thermal conductive materials in the market. [0003] The most widely used metals in heat sinks are copper and copper alloys, but copper is relatively expensive, and the quality of copper is relatively high. Using light and cheap aluminum to replace copper as a heat transfer material has a significant cost advantage. The thermal conductivity of pure aluminum is better tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08
CPCC22C21/08
Inventor 李亿龙胡辉李江峰向军刘海洋
Owner 湖南海铝精密工业股份有限公司