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Aluminum alloy shell and its preparation method

An aluminum alloy, aluminum alloy-based technology, applied in coatings, surface reaction electrolytic coatings, electrolytic coatings, etc., can solve problems such as pitting on the surface of aluminum alloy shells, improve corrosion resistance, and solve pitting problems Effect

Active Publication Date: 2021-01-15
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Problems solved by technology

[0004] The purpose of the present disclosure is to provide an aluminum alloy shell and a preparation method thereof, so as to solve problems such as pitting on the surface of the aluminum alloy shell

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  • Aluminum alloy shell and its preparation method
  • Aluminum alloy shell and its preparation method

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Embodiment Construction

[0036] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0037] The present disclosure provides an aluminum alloy shell and a preparation method thereof, so as to solve defects such as pitting on the surface of the aluminum alloy shell. The aluminum alloy shell of the present disclosure and its preparation method will be described in detail below with reference to the accompanying drawings. If there is no conflict, the features in the follo...

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Abstract

The invention relates to an aluminum alloy shell and a preparation method thereof. The preparation method comprises the following steps that an aluminum alloy base material and a polishing solution are provided, a first metal sulfide is added into the polishing solution according to first preset concentration, wherein the corrosion resistance of metal elements in the first metal sulfide is greaterthan that of metal elements of the surface of the aluminum alloy base material; and polishing treatment is performed on the aluminum alloy base material through the polishing solution, the surface ofthe aluminum alloy base material is provided with a plurality of first corroded holes after being corroded by the polishing solution, the metal elements of the surface of the aluminum alloy base material and the first metal sulfide undergo replacement reaction to generate a first metal compound with corrosion resistance, and at least a part of the first metal compound fills the first corroded holes. The problem of pockmarking of the surface of aluminum alloy is solved; an anode oxidation solution is provided, and the aluminum alloy base material is immersed in the anode oxidation solution foranodic oxidation treatment, so that an anodic oxidation film is formed on the surface of the aluminum alloy base material; and coloring and sealing treatment is performed on the aluminum alloy base material, so that the aluminum alloy shell is obtained through machining.

Description

technical field [0001] The present disclosure relates to the technical field of shell processing, in particular to an aluminum alloy shell and a preparation method thereof. Background technique [0002] In order to meet the strength and light weight of mobile phone cases, more and more mobile phone cases currently use aluminum alloy shells containing copper or zinc as mobile phone shell materials, but this aluminum alloy shell has serious corrosion after anodizing and coloring Pit, commonly known as pitting, especially after mirror anodization, the pitting is more serious, affecting the strength of the shell. [0003] In order to obtain high-brightness anodized aluminum alloy mobile phone appearance parts, it is necessary to solve the bad problems such as pitting caused by corrosion of anodized film. Contents of the invention [0004] The purpose of the present disclosure is to provide an aluminum alloy shell and a preparation method thereof, so as to solve problems such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/08C25D11/10C25D11/12C25D11/16C25D11/24C23F3/03
CPCC23F3/03C25D11/08C25D11/10C25D11/12C25D11/16C25D11/243
Inventor 王建宇刘兵许多
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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