Die casting rare earth aluminum alloy material with high heat conductivity and preparation method thereof

A technology of aluminum alloy materials and high thermal conductivity, which is applied in the field of aluminum alloy materials, can solve the problems of relying on imports of high thermal conductivity die-casting aluminum alloy materials, and achieve the effects of excellent mechanical properties, excellent mechanical properties, and excellent elongation

Active Publication Date: 2019-07-16
广西国瑞稀钪新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, subject to the blockade of patented technology, domestic high-end high thermal conductivity die-casting aluminum alloy materials basically rely on imports

Method used

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  • Die casting rare earth aluminum alloy material with high heat conductivity and preparation method thereof
  • Die casting rare earth aluminum alloy material with high heat conductivity and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] A die-casting rare earth aluminum alloy material with high thermal conductivity, its composition and weight percentage are: Si 4.0%, Fe0.6%, Cu 1.5%, Mg 0.5%, Sr 0.05%, Er 0.08%, Sc 0.08%, and the rest The amount is aluminum.

[0033] Its preparation method comprises the following steps:

[0034] (1) Put the aluminum-iron master alloy, aluminum-silicon master alloy, copper ingot and aluminum ingot into the smelting furnace, the aluminum ingot is placed on the bottom and the top respectively, and the middle is followed by the aluminum-silicon master alloy, the aluminum-iron master alloy and the copper ingot, Set the smelting temperature to 730°C, and obtain melt I after the charge is completely melted;

[0035] (2) Add aluminum-erbium master alloy and aluminum-scandium master alloy to melt I for smelting, set the melting temperature to 730°C, and obtain melt II after the charge is completely melted;

[0036] (3) Add magnesium ingots to melt II for smelting, set the mel...

Embodiment 2

[0041] A die-casting rare earth aluminum alloy material with high thermal conductivity, its composition and weight percentage are: Si 3.5%, Fe 0.6%, Cu 1.8%, Mg 0.6%, Sr 0.05%, Er 0.07%, Sc 0.07%, Yu The amount is aluminum.

[0042] Its preparation method comprises the following steps:

[0043] (1) Put the aluminum-iron master alloy, aluminum-silicon master alloy, copper ingot and aluminum ingot into the smelting furnace, the aluminum ingot is placed on the bottom and the top respectively, and the middle is followed by the aluminum-silicon master alloy, the aluminum-iron master alloy and the copper ingot, Set the melting temperature to 740°C, and melt I is obtained after the charge is completely melted;

[0044] (2) Add aluminum-erbium master alloy and aluminum-scandium master alloy to melt I for smelting, set the melting temperature to 740°C, and obtain melt II after the charge is completely melted;

[0045] (3) Add magnesium ingots to melt II for smelting, set the melting ...

Embodiment 3

[0050] A die-casting rare earth aluminum alloy material with high thermal conductivity, its composition and weight percentage are: Si 3.0%, Fe 0.8%, Cu 1.8%, Mg 0.7%, Sr 0.03%, Er 0.06%, Sc 0.06%, Yu The amount is aluminum.

[0051] Its preparation method comprises the following steps:

[0052] (1) Put the aluminum-iron master alloy, aluminum-silicon master alloy, copper ingot and aluminum ingot into the smelting furnace, the aluminum ingot is placed on the bottom and the top respectively, and the middle is followed by the aluminum-silicon master alloy, the aluminum-iron master alloy and the copper ingot, Set the melting temperature to 750°C, and melt I is obtained after the charge is completely melted;

[0053] (2) Add aluminum-erbium master alloy and aluminum-scandium master alloy to melt I for smelting, set the melting temperature to 750°C, and obtain melt II after the charge is completely melted;

[0054] (3) Add magnesium ingots to melt II for smelting, set the melting ...

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Abstract

The invention discloses a die casting rare earth aluminum alloy material with high heat conductivity and a preparation method thereof. The die casting rare earth aluminum alloy material comprises, bymass, 2.5%-5.0% of Si, 0.6%-1.0% of Fe, 0.5%-2.0% of Cu, 0.4%-0.9% of Mg, 0.01%-0.1% of Sr, 0.05%-0.1% of Er, 0.05%-0.1% of Sc and the balance aluminum. The preparation method includes the steps thatferro-aluminum intermediate alloy, aluminum-silicon intermediate alloy, copper ingots and aluminum ingots are loaded into a smelting furnace for smelting at first, then aluminum-erbium intermediate alloy and aluminum-scandium intermediate alloy are added, magnesium ingots are further added, and finally aluminum-strontium intermediate alloy is added; and afterwards, refining, drossing and casting into ingots are performed, and die casting rare earth aluminum alloy with high heat conductivity is obtained. According to the die casting rare earth aluminum alloy material with the high heat conductivity and the preparation method thereof, the alloy compositions are optimized scientifically and reasonably, rare earth elements erbium, scandium and strontium are added, and the obtained die castingrare earth aluminum alloy material has the high thermal conductivity and excellent mechanical properties.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to a die-casting rare earth aluminum alloy material with high thermal conductivity and a preparation method thereof. Background technique [0002] Aluminum and its alloys are currently the most widely used radiator materials due to their light weight, high thermal conductivity, good formability and corrosion resistance, and low cost. Die casting (Die Casting or High Pressure Die Casting) technology is widely used in the manufacture of aluminum alloy radiators because of its high production efficiency and the ability to produce thin-walled and complex-shaped workpieces. Currently, most of the components such as CPUs, graphics cards, and LED lights The radiators are produced using die-casting technology, and their materials are made of special die-cast aluminum alloy. However, subject to the blockade of patented technology, domestic high-end high thermal conductivity...

Claims

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Application Information

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IPC IPC(8): C22C21/04C22C1/03
CPCC22C1/026C22C1/03C22C21/04
Inventor 胡振光甘培原冀军宇韦德仕何俞松刘志
Owner 广西国瑞稀钪新材料科技有限公司
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