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Aluminum alloy material for mobile phone structural part and preparation method of aluminum alloy material

A technology of aluminum alloy material and mobile phone structure, applied in the field of aluminum alloy processing, can solve the problems of poor specular effect, low strength, poor surface decoration material effect, etc., and achieve good surface treatment adaptability, improved alloy strength, and good mechanical properties. Effect

Active Publication Date: 2019-04-02
LVMEI ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the aluminum alloy mobile phone structural parts on the market have problems such as low mechanical properties and poor surface decoration materials.
Ordinary aluminum alloy mobile phone structural materials mostly use medium-strength aluminum alloys, such as 6XXX alloys, which are sensitive to corrosion when anodizing the high-gloss mirror surface, and are prone to slight corrosion, resulting in numbness and fogging on the surface, and poor high-gloss mirror effect
However, if low-alloyed and low-strength aluminum alloy is used, although the problem of high-gloss mirror anodizing treatment is not serious, there are problems of low strength and failure of the drop test, which makes it difficult to meet the current material performance requirements for mobile phone structural parts

Method used

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  • Aluminum alloy material for mobile phone structural part and preparation method of aluminum alloy material

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Embodiment 1

[0037] An aluminum alloy material used for mobile phone structural parts, the composition and mass percentage of the aluminum alloy material are: Mg 0.80%, Si 0.52%, Cu 0.52%, Mn 0.12%, Zr 0.05%, Fe≤0.1%, others The sum of impurities is ≤0.10%, and the balance is Al.

[0038] A method for preparing an aluminum alloy material for mobile phone structural parts as described above, comprising the following steps:

[0039] A. Smelting and refining: Melting is carried out according to the composition and mass percentage requirements of the aluminum alloy material, and refined in argon gas with a purity of 99.99%;

[0040] B. On-line refinement: adding a refiner to the refined aluminum alloy material in step A for on-line refinement;

[0041] C. On-line degassing and impurity removal: degas the aluminum alloy material after online refinement in step B, and remove impurities through a composite filter device;

[0042] D. Casting: semi-continuous water-cooled casting is carried out o...

Embodiment 2

[0054] An aluminum alloy material used for mobile phone structural parts, the composition and mass percentage of the aluminum alloy material are: Mg 0.84%, Si 0.56%, Cu 0.56%, Mn 0.16%, Zr 0.08%, Fe≤0.1%, others The sum of impurities is ≤0.10%, and the balance is Al.

[0055] A method for preparing an aluminum alloy material for mobile phone structural parts as described above, comprising the following steps:

[0056] A. Smelting and refining: Melting is carried out according to the composition and mass percentage requirements of the aluminum alloy material, and refined in argon gas with a purity of 99.99%;

[0057] B. On-line refinement: adding a refiner to the refined aluminum alloy material in step A for on-line refinement;

[0058] C. On-line degassing and impurity removal: degas the aluminum alloy material after online refinement in step B, and remove impurities through a composite filter device;

[0059] D. Casting: semi-continuous water-cooled casting is carried out o...

Embodiment 3

[0071] An aluminum alloy material used for mobile phone structural parts, the composition and mass percentage of the aluminum alloy material are: Mg 0.87%, Si 0.59%, Cu 0.59%, Mn 0.20%, Zr 0.11%, Fe≤0.1%, others The sum of impurities is ≤0.10%, and the balance is Al.

[0072] A method for preparing an aluminum alloy material for mobile phone structural parts as described above, comprising the following steps:

[0073] A. Smelting and refining: Melting is carried out according to the composition and mass percentage requirements of the aluminum alloy material, and refined in argon gas with a purity of 99.99%;

[0074] B. On-line refinement: adding a refiner to the refined aluminum alloy material in step A for on-line refinement;

[0075] C. On-line degassing and impurity removal: degas the aluminum alloy material after online refinement in step B, and remove impurities through a composite filter device;

[0076] D. Casting: semi-continuous water-cooled casting is carried out o...

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Abstract

The invention relates to the technical field of aluminum alloy machining, in particular to an aluminum alloy material for a mobile phone structural part and a preparation method of the aluminum alloymaterial. The aluminum alloy material is prepared from the components in percent by mass: 0.80-0.95% of Mg, 0.52-0.66% of Si, 0.52-0.66% of Cu, 0.12-0.28% of Mn, 0.05-0.18% of Zr, smaller than or equal to 0.1% of Fe, smaller than or equal to 0.10% of the sum of other impurities and the balance Al. The aluminum alloy material for the mobile phone structural part has high strength, toughness, surface treatment adaptability, tensile strength, yield strength, corrosion resistance and other performance, the strength is improved by one time or above, the tensile strength is larger than or equal to 380 MPa, the yield strength is larger than or equal to 340 MPa, the drop test does not affect the quality and performance of alloy, corrosion sensitivity or numbing or fogging is not generated during highlight mirror anode oxidized surface treatment, and the aluminum alloy material is high in corrosion resistance and suitable for mobile phone structural part materials treated with highlight mirrors.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing, in particular to an aluminum alloy material used for mobile phone structural parts and a preparation method thereof. Background technique [0002] At present, the aluminum alloy mobile phone structural parts on the market have problems such as low mechanical properties and poor surface decoration materials. Ordinary aluminum alloy mobile phone structural materials mostly use medium-strength aluminum alloys, such as 6XXX alloys, which are corrosion-sensitive when anodized for high-gloss mirror surfaces, and are prone to slight corrosion, resulting in numbness and fogging on the surface, and poor high-gloss mirror effects. However, if low-alloyed and low-strength aluminum alloys are used, although the high-gloss mirror surface anodizing treatment is not a big problem, there are problems such as low strength and failure to pass the drop test, which makes it difficult to meet the cu...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/02C22C1/06C22F1/047
CPCC22C1/026C22C1/06C22C21/08C22F1/002C22F1/047
Inventor 叶健龙王景
Owner LVMEI ALUMINUM
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