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A kind of die casting aluminum alloy and its preparation method and application

A technology for casting aluminum alloys and aluminum materials, applied in the field of aluminum alloys, can solve the problems of poor thermal conductivity of aluminum alloys, and achieve the effect of good mechanical properties

Active Publication Date: 2021-12-07
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, when the mechanical properties of the aluminum alloy are good, the thermal conductivity of the aluminum alloy is poor

Method used

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  • A kind of die casting aluminum alloy and its preparation method and application
  • A kind of die casting aluminum alloy and its preparation method and application
  • A kind of die casting aluminum alloy and its preparation method and application

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preparation example Construction

[0038] The present invention also provides a method for preparing a die-casting aluminum alloy, which includes the following steps: according to the composition ratio of the die-casting aluminum alloy, first add aluminum-containing material into the melting furnace, and then add silicon-containing material and magnesium-containing material after the aluminum-containing material is melted. Iron-containing material, strontium-containing material, nickel-containing material or zirconium-containing material, and scandium-containing material are smelted, and then cast to obtain aluminum alloy ingots after slag removal, refining and degassing treatment, and the aluminum alloy ingots are melted and die-cast , to obtain the aforementioned die-casting aluminum alloy of the present invention.

[0039] In the present invention, the aluminum-containing material, silicon material, magnesium-containing material, iron-containing material, strontium-containing material, nickel-containing materia...

Embodiment 1-33

[0048] Prepare alloy raw materials containing various elements according to the aluminum alloy composition shown in Table 1; add pure Al to the melting furnace and smelt at 780-800°C; after pure Al is melted, add Al-Si alloy, pure Mg, Al - Fe alloy, Al-Sr alloy, Al-Sc alloy, Al-Ni alloy or Al-Zr alloy are melted at 700-710°C and stirred evenly to obtain molten metal;

[0049] Under the condition of 700-710 ℃, add slag remover and refining agent to the molten metal, carry out slag removal, refining and degassing, until the refining agent is fully reacted, then carry out slag removal to obtain alloy melt, and cast the alloy melt The aluminum alloy ingot was obtained; the aluminum alloy ingot was melted and die-cast, and the temperature of the die-casting bath was 700-780°C; after die-casting, the die-cast aluminum alloy was heat-treated at 200°C for 4 hours, and the test results are shown in Table 2.

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Abstract

The invention relates to the field of aluminum alloys, in particular to a die-casting aluminum alloy and a preparation method and application thereof. In terms of weight percentage, the die-casting aluminum alloy of the present invention comprises: Si 6%-9%, Mg 1%-2%, Fe 0.12%-0.15%, Sr 0.05%-0.15%, Ni 0.005%-0.01% , Sc 0.005%‑0.015%, and aluminum and unavoidable impurities, the total amount of impurities <0.1%. Through the above technical solution, the die-casting aluminum alloy provided by the present invention has good mechanical properties, die-casting formability and thermal conductivity.

Description

technical field [0001] The invention relates to the field of aluminum alloys, in particular to a die-casting aluminum alloy and a preparation method and application thereof. Background technique [0002] In the field of IT communication, aluminum alloys have increasingly shown their application prospects as appearance parts. Compared with stainless steel, aluminum alloy is lighter, has a lower melting point, is suitable for die-casting, has high efficiency, low cost, and is easy to recycle. Compared with magnesium alloy, aluminum alloy has better thermal conductivity, better formability, and a wide range of forming conditions, which is suitable for the preparation of structural parts of IT products such as mobile phones. [0003] In the prior art, when the mechanical properties of the aluminum alloy are good, the thermal conductivity of the aluminum alloy is poor. Therefore, it is necessary to optimize the aluminum alloy formula so that the aluminum alloy can take into acc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/02C22C1/03
CPCC22C1/026C22C1/03C22C21/02
Inventor 廖梦觉杨阳王孝东郭强
Owner BYD CO LTD
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