Aluminum alloy and preparation method thereof

A technology for aluminum alloys and products, applied in the field of aluminum alloys and its preparation, can solve problems such as surface yellowing, surface appearance not meeting requirements, affecting surface appearance, etc., to achieve the effect of improving strength, meeting performance requirements, and good surface appearance
CN105671384AInactive Publication Date: 2016-06-15AAC MICROTECH CHANGZHOU
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AAC MICROTECH CHANGZHOU
Publication Date
2016-06-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses aluminum alloy and a preparation method thereof. The aluminum alloy comprises, by weight, 4.0%-11.0% of Zn, 2.0%-3.0% of Mg, 0-0.3% of Si, 0-0.4% of Ti, 0-0.2% of Cu, 0-0.01% of Zr, 0-0.01% of Cr, 0-0.01% of Mn, less than 0.1% of Fe and the balance Al and accessory impurities. The weight ratio of Zn to Mg is 2-6. According to the aluminum alloy, the surface appearance defects such as fibrous structure stripes and surface yellowing in the anodic oxidation treatment process of commercial 7xxx-series (such as 7075, 7050 and 7055) high-strength aluminum alloy are overcome, high strength and good anodic oxidation treatment surface appearance of the aluminum alloy are integrated, the strength of the aluminum alloy for existing electronic equipment body shells is further improved, and the requirement of electronic equipment lighting and thinning development for aluminum alloy materials for the equipment body shells is effectively met; meanwhile, the application field of the 7xxx-series high-strength aluminum alloy also can be expanded.
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Description

technical field

[0001] The invention relates to the field of aluminum alloy materials, in particular to an aluminum alloy and a preparation method thereof. Background technique

[0002] At present, electronic equipment (such as mobile phones, tablet computers, notebook computers, electronic watches, electronic players, electronic readers, electronic displays, etc.) is showing a trend of thinning and thinning, which puts forward more requirements on the performance of the body shell materials of electronic equipment. High requirements, the material of the fuselage shell should not only have high strength, but also have a good surface appearance. As we all know, aluminum alloy has the advantages of high specific strength, good processing performance, low cost, etc., and aluminum alloy can obtain a good surface appearance through anodic oxidation surface treatment. Compared with plastic and stainless steel commonly used in electronic equipment body shell materials, anodized al...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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