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Aluminum alloy with high thermal conductivity and preparation method thereof

An aluminum alloy and high thermal conductivity technology, applied in the field of aluminum alloys, can solve the problems of poor thermal conductivity, difficult to meet the rapid heat dissipation of parts, and achieve improved thermal conductivity, excellent casting performance and flow filling performance, and high thermal conductivity. Effect

Inactive Publication Date: 2021-06-22
ZHUHAI RUNXINGTAI ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the thermal conductivity of these alloys is poor, and the thermal conductivity is usually lower than 150W/(m K). The thermal conductivity of A356 cast aluminum alloy is only about 140W/(m K), wh

Method used

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  • Aluminum alloy with high thermal conductivity and preparation method thereof
  • Aluminum alloy with high thermal conductivity and preparation method thereof
  • Aluminum alloy with high thermal conductivity and preparation method thereof

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preparation example Construction

[0066] As an embodiment of the present application, the preparation method of the high thermal conductivity aluminum alloy of the present application includes the following steps:

[0067] S1. Heating the aluminum ingot to melt the aluminum ingot into aluminum liquid, adding Si, Ni, Cu, Sr, Mg and B to the aluminum liquid to melt together into aluminum alloy liquid, refining and removing slag from the aluminum alloy liquid to obtain aluminum alloy to be cast alloy liquid;

[0068] S2. Casting the aluminum alloy liquid to be cast into an aluminum alloy ingot, and heat-treating the aluminum alloy ingot to obtain an aluminum alloy with high thermal conductivity.

[0069] Among them, considering the production cost and controlling the inevitable impurity content, the aluminum ingot selected in this application is an aluminum ingot with an aluminum content ≥ 99.8%.

[0070] In this embodiment, the specific operation of step S1 is: heating the aluminum ingot to heat and melt it int...

Embodiment

[0078] Table 1 shows some examples of the specific content of each component in the high thermal conductivity aluminum alloy of the present invention. It should be pointed out that the specific content of each component of the high thermal conductivity aluminum alloy of the present invention is not limited to the data in Table 1.

[0079] Table 1 Examples of High Thermal Conductivity Aluminum Alloy Content

[0080]

[0081] Table 2 shows some examples of main process parameters in the preparation method of the high thermal conductivity aluminum alloy of the present invention.

[0082] Table 2 Specific examples of production process parameters of high thermal conductivity aluminum alloy

[0083]

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Abstract

The invention discloses an aluminum alloy with high thermal conductivity and a preparation method thereof. The aluminum alloy with high thermal conductivity comprises the following components of, in percentage by weight, 6.0%-20.0% of Si, 0.1%-4% of Ni, 0-0.3% of Mg, 0-0.3% of Cu, 0-0.1% of B, 0.001%-0.1% of Sr and 80.0%-95.0% of Al, the mass ratio of Si to Ni is (2-200): 1, and the mass ratio of Ni to Sr is (10-50): 1. Compared with the prior art, rare earth elements do not need to be added, the content of alloying elements is small, and cost is low; and the heat-conducting property of the hypoeutectic Al-Si alloy is greatly improved by strictly controlling the contents of Mg and Cu and regulating and controlling the mass ratio of Ni to Sr. The aluminum alloy is high in heat conductivity coefficient, moderate in strength, excellent in plasticity and excellent in casting performance and flow mold filling performance.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a high thermal conductivity aluminum alloy and a preparation method thereof. Background technique [0002] Due to its light weight, corrosion resistance, and excellent thermal conductivity, aluminum alloys are widely used in parts that require high thermal conductivity, such as communication base station cooling shells, lighting devices, and new energy vehicle structural parts. Casting is the most commonly used production method for aluminum alloy products, such as die casting and squeeze casting, which have the advantages of high efficiency, low cost, and the ability to form thin-walled parts with complex structures. Al-Si series is currently the most commonly used cast aluminum alloy, accounting for more than 85% of the total output of existing cast aluminum alloys. At present, the most commonly used cast aluminum alloy materials are A356, A380, ADC12 and so on. These...

Claims

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Application Information

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IPC IPC(8): C22C21/04C22C1/02B22D7/00C22F1/043
CPCB22D7/005C22C1/026C22C21/04C22F1/043
Inventor 张莹祁明凡王继成邓蒨瑜陈钦义谭劼康永林任怀德
Owner ZHUHAI RUNXINGTAI ELECTRICAL
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