A kind of high-quality mirror aluminum alloy material and preparation method thereof

An aluminum alloy material and high-quality technology, which is applied in the field of high-quality mirror aluminum alloy materials and its preparation, can solve problems that restrict the development of semiconductor and high-end optical information industries, so as to improve the yield of mirror precision machining, improve the surface state, reduce light absorbing effect

Active Publication Date: 2022-02-01
湖南卓创精材科技股份有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] At present, high-quality mirror aluminum alloys used in high-end chips and high-end optical information fields mainly rely on imports. The supply of materials has long been monopolized by foreign manufacturers, which has greatly restricted the development of China's semiconductor and high-end optical information industries.

Method used

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  • A kind of high-quality mirror aluminum alloy material and preparation method thereof
  • A kind of high-quality mirror aluminum alloy material and preparation method thereof
  • A kind of high-quality mirror aluminum alloy material and preparation method thereof

Examples

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Embodiment 1

[0068] A method for preparing a high-quality mirror aluminum alloy material, comprising the following steps:

[0069] (1) Ingredients: Alloy composition weight percent: Si: 0.52%, Fe: 0.08%, Cu: 0.25%, Mn: 0.08%, Mg: 0.9%, Cr: 0.21%, Zn: 0.02%, Ti: 0.02% , Ag: 0.1%, Pb: 0.1%, other unavoidable individual impurities ≤ 0.02%, the total of other unavoidable impurities ≤ 0.1%, and the balance is Al.

[0070] (2) Melting and casting: put the prepared alloy ingredients and high-purity aluminum ingots with a purity of 99.95% in a sealed melting furnace and perform pre-melting treatment in the furnace, then heat up to 720°C for melting, slag removal and degassing in the furnace And filter, and finally enter the crystallizer and solidify into ingots. After the ingot is homogenized, it is cooled to room temperature and subjected to sawing and face milling to remove the surface structure of the ingot. Among them, the degassing and filtering device must be pre-melted before use; the pre...

Embodiment 2

[0075] A method for preparing a high-quality mirror aluminum alloy material, comprising the following steps:

[0076] (1) Ingredients: The weight percentage of the alloy composition is: Si: 0.55%, Fe: 0.05%, Cu: 0.20%, Mn: 0.04%, Mg: 0:93%, Cr: 0.18%, Zn: 0.01%, Ti: 0.01%, Ag: 0.08%, Pb: 0.08%, the remaining unavoidable individual impurities ≤ 0.02%, the total of other unavoidable impurities ≤ 0.1%, and the balance is Al.

[0077] (2) Melting and casting: place the prepared alloy ingredients and high-purity aluminum ingots with a purity of 99.99% in a sealed melting furnace and perform pre-melting treatment in the furnace, and then heat up to 730°C for melting, slag removal, degassing and Filter, and finally enter the crystallizer to solidify into ingots. After the ingot is homogenized, it is cooled to room temperature and subjected to sawing and face milling to remove the surface structure of the ingot. Among them, the degassing and filtering device must be pre-melted befor...

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Abstract

The invention discloses a high-quality mirror aluminum alloy material and a preparation method thereof. The alloy is composed of the following components: Si: 0.45-0.55%, Cu: 0.15-0.25%, Mg: 0.75-0.95%, Cr: 0.12 ~0.22%, Ag: 0.02~0.20%, Pb: 0.03~0.15%, Fe≤0.08%, Mn≤0.1%, Zn≤0.05%, Ti≤0.04%, the balance is Al and unavoidable impurities. The preparation method includes: melting and casting, solid solution treatment, low-temperature cold deformation at -200--150°C, and vibration aging treatment in the sub-resonant frequency range. The invention optimizes the alloy components and the preparation process, effectively controls the quantity, distribution and shape of unfavorable second phases, recrystallization and residual crystalline phases, improves the surface activity, light absorption, optical reflectivity and machining adaptability of the matrix tissue, and effectively Improve the mirror precision machining yield of aluminum alloy materials and the adaptability to the surface coating process; finally obtain high-quality mirror aluminum alloy materials.

Description

technical field [0001] The invention discloses a high-quality mirror-surface aluminum alloy material and a preparation method thereof, and belongs to the technical field of preparation of nonferrous metal materials. Background technique [0002] Mirror aluminum alloy generally refers to an aluminum alloy material that has a high optical reflectivity and presents a mirror effect. Ordinary mirror aluminum alloy surface reflectance ≥ 70% can meet the application requirements, such as automotive interior, decorative panels and architectural decoration, etc. This kind of mirror aluminum alloy can be prepared by rolling plate and strip with precise surface. For high-end chip equipment such as semiconductor etching machines and ion implanters, as well as high-end optical information equipment such as optical mirrors and telescopic systems, one of the key materials is high-quality mirror aluminum alloy with extremely high surface reflectivity. [0003] At present, high-quality mirr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/047
CPCC22C21/08C22C1/026C22F1/047C22F1/002C21D10/00C22F3/00C22B9/04C22B9/023
Inventor 张劲郑英钟掘
Owner 湖南卓创精材科技股份有限公司
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