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A rare earth modified die-casting aluminum alloy material with high thermal conductivity and its preparation method

A rare earth modified and cast aluminum alloy technology, which is applied in the field of aluminum alloy materials, can solve the problems of high thermal conductivity die-casting aluminum alloy materials such as dependence on imports, achieve excellent mechanical properties, reduce process flow, and improve thermal conductivity and mechanical properties.

Active Publication Date: 2021-08-24
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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  • A rare earth modified die-casting aluminum alloy material with high thermal conductivity and its preparation method
  • A rare earth modified die-casting aluminum alloy material with high thermal conductivity and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A rare earth modified die-casting aluminum alloy material with high thermal conductivity, its composition and weight percentage are: Si 10.0%, Fe 0.8%, Cu 1.5%, Mg 0.5%, Zn 0.5%, Sr 0.05%, La 0.08% , Ce 0.08%, and the balance is aluminum.

[0032] Its preparation method comprises the following steps:

[0033] (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;

[0034] (2) Add aluminum-lanthanum master alloy and aluminum-cerium master alloy to melt I for melting, set the melting temperature to 730°C, and obtain melt II after the charge is completely melted;

[0035] (3) Add magnesium ingots and zinc ingots to melt...

Embodiment 2

[0040] A rare earth modified die-casting aluminum alloy material with high thermal conductivity, its composition and weight percentage are: Si 9.0%, Fe 0.9%, Cu 1.8%, Mg 0.6%, Zn 0.6%, Sr 0.05%, La 0.07% , Ce 0.07%, and the balance is aluminum.

[0041] Its preparation method comprises the following steps:

[0042] (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;

[0043] (2) Add aluminum-lanthanum master alloy and aluminum-cerium master alloy to melt I for melting, set the melting temperature to 740°C, and obtain melt II after the charge is completely melted;

[0044] (3) Add magnesium ingots and zinc ingots to m...

Embodiment 3

[0049] A rare earth modified die-casting aluminum alloy material with high thermal conductivity, its composition and weight percentage are: Si8.0%, Fe 1.0%, Cu 2.2%, Mg 0.7%, Zn 0.7%, Sr 0.03%, La 0.06% , Ce 0.06%, and the balance is aluminum.

[0050] Its preparation method comprises the following steps:

[0051] (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;

[0052] (2) Add aluminum-lanthanum master alloy and aluminum-cerium master alloy to melt I for melting, set the melting temperature to 750°C, and obtain melt II after the charge is completely melted;

[0053] (3) Add magnesium ingots and zinc ingots to me...

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Abstract

The invention discloses a rare-earth modified die-casting aluminum alloy material with high thermal conductivity and a preparation method thereof, the composition of which is calculated by mass percentage: Si 7.0-11.0%, Fe 0.5-1.3%, Cu 0.5-2.5%, Mg 0.3‑0.7%, Zn 0.3‑0.7%, Sr 0.01‑0.1%, La 0.05‑0.1%, Ce 0.05‑0.1%, and the balance is aluminum. The preparation method includes: first putting aluminum-iron master alloy, aluminum-silicon master alloy, copper and aluminum into a melting furnace for smelting, then adding aluminum-lanthanum master alloy and aluminum-cerium master alloy, then adding magnesium ingot and zinc ingot, and finally adding The aluminum strontium master alloy is then refined, slag removed, and cast into an ingot to obtain a rare earth modified die-casting aluminum alloy material with high thermal conductivity. The invention scientifically and rationally optimizes the alloy composition, adds rare earth elements lanthanum, cerium and strontium, and obtains a rare earth modified die-casting aluminum alloy material with 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 rare earth modified die-casting 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 con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/04C22C1/03C22C1/06
CPCC22C1/026C22C1/03C22C1/06C22C21/04
Inventor 胡振光甘培原冀军宇韦德仕何俞松
Owner 广西国瑞稀钪新材料科技有限公司