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Surface glazing technology for aluminium shell of electronic product

A technology for electronic products and shells, which is applied in the technical field of glaze fixing on the surface, which can solve the problems of high dependence on metal substrates and low melting point of aluminum, and achieve the effects of simple operation, fewer process steps, and increased selectability

Active Publication Date: 2013-05-01
沪华五金电子(吴江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that it is highly dependent on the metal substrate (usually iron) and process conditions, and because this process generally requires high temperatures when sintering enamel, such as 800~1200 ° C, and the melting point of aluminum Relatively low (about 660°C), so there is no mature technology that can successfully fix the glaze on the surface of aluminum products, especially on the surface of aluminum casings of 3C and other electronic products

Method used

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  • Surface glazing technology for aluminium shell of electronic product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment provides a manufacturing process for a notebook computer casing, see figure 1 , the manufacturing process includes the following steps:

[0023] (1) Stamping: Select an aluminum substrate with high aluminum purity, judge and stamp the aluminum substrate according to the set size, and then clean the surface;

[0024] (2) Spray white glaze: spray white glaze on one side of the aluminum substrate after step (1), and then bake at 120°C for 5 minutes to form a bottom glaze layer on one side of the aluminum substrate;

[0025] (3) Pattern printing: Print patterns on the surface of the underglaze layer obtained in step (2) by means of digital inkjet printing, and then sinter at 530°C for 6-8 minutes to form an ink layer;

[0026] (4) Spray transparent glaze: spray transparent glaze on the surface of the ink layer obtained in step (3), bake at 120°C for 6-10 minutes, and then sinter at 530°C for 6-8 minutes. A transparent glaze layer is formed on th...

Embodiment 2

[0029] The manufacturing process of the notebook computer casing provided by this embodiment includes the following steps:

[0030] (1) Stamping: Select an aluminum substrate with high aluminum purity, judge and stamp the aluminum substrate according to the set size, and then clean the surface;

[0031] (2) Spraying white glaze: spray white glaze on one side of the aluminum substrate after step (1), and then bake at 100°C for 5 minutes to form a bottom glaze layer on one side of the aluminum substrate;

[0032] (3) Pattern printing: Print patterns on the surface of the underglaze layer obtained in step (2) by means of digital inkjet printing, and then sinter at 550°C for 6-8 minutes to form an ink layer;

[0033] (4) Spray transparent glaze: spray transparent glaze on the surface of the ink layer obtained in step (3), bake at 100°C for 6-10 minutes, and then sinter at 550°C for 6-8 minutes. A transparent glaze layer is formed on the surface of the aluminum substrate...

Embodiment 3

[0036] The manufacturing process of the notebook computer casing provided by this embodiment includes the following steps:

[0037] (1) Stamping: Select an aluminum substrate with high aluminum purity, judge and stamp the aluminum substrate according to the set size, and then clean the surface;

[0038] (2) Spraying white glaze: spray white glaze on one side of the aluminum substrate after step (1), and then bake at 80°C for 5 minutes to form a bottom glaze layer on one side of the aluminum substrate;

[0039] (3) Pattern printing: Print patterns on the surface of the underglaze layer obtained in step (2) by means of digital inkjet printing, and then sinter at 570°C for 6-8 minutes to form an ink layer;

[0040] (4) Spray transparent glaze: spray transparent glaze on the surface of the ink layer obtained in step (3), bake at 80°C for 6-10 minutes, and then sinter at 570°C for 6-8 minutes. A transparent glaze layer is formed on the surface of the aluminum substrate; ...

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Abstract

The invention relates to a surface glazing technology for an aluminium shell of an electronic product, comprising the following steps of: 1) stamping and cleaning an aluminium substrate; 2) spraying a white glaze material on the surface of the aluminium substrate, and baking for 3-8 minutes at 50-200 DEG C to form a ground coat layer; 3) printing patterns on the surface of the ground coat layer, and then, sintering for 3-10 minutes at 500-600 DEG C to form an ink layer; and 4) spraying a transparent glaze material on the surface of the ink layer, baking for 6-10 minutes at 50-200 DEG C, and then, sintering for 3-10 minutes at 500-600 DEG C. In comparison with the existing anode manufacture procedure, the technology provided by the invention has less steps and is simple in operation, and cannot generate heavy pollutants, such as strong acid, strong base and the like, so that the technology is more environmentally-friendly; and in the technology, surface glazing for the aluminium substrate at a lower sintering temperature can be realized, abundant of designs and colours are provided, and products of the technology are excellent in abrasive resistance, alcohol resistance, violet resistance, high and low temperature cycling resistance and high-humidity resistance.

Description

technical field [0001] The invention relates to the field of metal surface treatment, in particular to a process for setting glaze on the surface of an aluminum shell of an electronic product. Background technique [0002] At present, the surface treatment process of aluminum casings of 3C and other electronic products mainly adopts anodic oxidation process. The process usually includes the following steps: substrate drawing - punching - degreasing - washing - alkali etching - washing - chemical polishing - anodizing - electrolytic coloring - washing - secondary surface treatment - assembly - packaging. The principle of anodic oxidation is to use metal or metal alloy as the anode, and use electrolysis to form a metal oxide film on the surface of the metal or metal alloy, thereby changing the surface state of the metal or metal alloy, improving the surface corrosion resistance, enhancing wear resistance and In this process, dyes can also be added to the electrolyte, and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K5/04C23D5/04
Inventor 张锦荣
Owner 沪华五金电子(吴江)有限公司