Housing and preparation method and application thereof
A shell and shell technology, which is applied in the application field of electronic product shells, can solve problems such as discontinuity and inconsistent visual effects, and achieve the effect of facilitating structural design, solving inconsistent appearance effects, and neat appearance
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[0042] The present invention also provides a method for preparing the casing, the method comprising:
[0043] (1) provide a metal substrate 1, and carry out hard anodizing treatment on the metal substrate 1 to obtain a metal substrate with a metal hard anodic oxide shell 2;
[0044] (2) forming a resin film layer 3 on one surface of the metal substrate obtained in step (1);
[0045] (3) Alkaline etching is carried out to the substrate obtained in step (2), to remove the metal hard anodic oxide shell 2 on the surface where the resin film layer 3 is not formed in the substrate;
[0046] (4) Perform acid etching on the substrate obtained in step (3) to remove the remaining metal in the substrate.
[0047] In the present invention, the embodiment of the hard anodic oxidation treatment is not particularly limited, and the metal substrate 1 can be subjected to hard anodic oxidation treatment in a conventional manner in the art to obtain a metal hard anodic oxide on the surface. The ...
Embodiment 1
[0080] This example is used to illustrate the preparation method of the shell.
[0081] (1) Cut a commercially available 1mm thick 5052 aluminum alloy plate into a rectangular piece of 15mm*80mm, put it into a polishing machine and grind it, and then wash it with absolute ethanol, and then dip the aluminum alloy substrate in 50g / In the sodium hydroxide aqueous solution of L, take out after 2min and rinse with deionized water, obtain such as figure 1 The pre-treated aluminum alloy sheet shown;
[0082] (2) Put the above-mentioned aluminum alloy sheet as an anode into a hard anodizing tank containing 150g / L of sulfuric acid and 15g / L of oxalic acid, at 6°C, the current density is 1.5A / dm 2 Carry out hard anodizing for 30min under the condition of figure 2 The aluminum alloy sheet shown. Measure the thickness of the metal hard anodic oxide shell with a metallographic microscope, and measure the hardness of the metal hard anodic oxide shell with a microhardness tester, the re...
Embodiment 2
[0090] This example is used to illustrate the preparation method of the shell.
[0091] (1) Cut a commercially available 1mm thick 5052 aluminum alloy plate into a rectangular piece of 15mm*80mm, put it into a polishing machine and grind it, and then wash it with absolute ethanol, and then dip the aluminum alloy substrate in 40g / In the sodium hydroxide aqueous solution of L, take out after 1min and wash clean with deionized water, obtain such as figure 1 The pre-treated aluminum alloy sheet shown;
[0092] (2) Put the above-mentioned aluminum alloy sheet as an anode into a hard anodizing tank containing 160g / L of sulfuric acid and 18g / L of oxalic acid, at 5°C and a current density of 3A / dm 2 Under the conditions of hard anodizing for 60min, wash and dry to get such as figure 2 The aluminum alloy sheet shown. Measure the thickness of the metal hard anodic oxide shell with a metallographic microscope, and measure the hardness of the metal hard anodic oxide shell with a micr...
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Abstract
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