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Wiredrawing and coating process of mobile phone metal shell

A coating process and metal shell technology, which is applied to metal processing equipment, devices for coating liquid on the surface, coatings, etc., can solve the problems of poor wire drawing effect, poor reliability test effect, and unsightly wire drawing effect, etc. , to achieve good drawing effect and good reliability test effect

Active Publication Date: 2014-06-25
东莞华誉精密技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, the metal shell of the mobile phone is obtained by grinding the product to form lines on its surface to obtain a wire drawing effect, and the wire drawing effect obtained by this treatment method is not beautiful enough
In addition, the coating process is often easy to cover the wire drawing, which makes the wire drawing effect not good, and the reliability test effect after the coating process is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A wire drawing coating process for a mobile phone metal case, which comprises the following steps:

[0047] Step 1. Metal surface wire drawing treatment process

[0048] Use a laser engraving machine to carry out laser wire drawing on the metal surface;

[0049] Step 2. Coating process of metal surface

[0050] (1) Spray primer

[0051] (1) Deploy the primer mixture and filter to obtain the primer to be sprayed; wherein, the filter is to use two layers of 400-mesh sieves to superimpose and filter twice; in this embodiment, the viscosity of the primer 9 seconds / NK2 cup;

[0052] The primer mixture comprises the following components by weight: hydroxy acrylic resin 22Kg, isocyanate 3 Kg, ethylene glycol ethyl ether acetate 75 Kg;

[0053] (2) Spray the primer on the metal surface after the wire drawing process, and dry it at 65°C for 16.5 minutes to obtain a primer with a film thickness of 3 μm;

[0054] (2) Medium-spray paint

[0055] (1) Deploy the intermediate pa...

Embodiment 2

[0064] A wire drawing coating process for a mobile phone metal case, which comprises the following steps:

[0065] Step 1. Metal surface wire drawing treatment process

[0066] Use a laser engraving machine to carry out laser wire drawing on the metal surface;

[0067] Step 2. Coating process of metal surface

[0068] (1) Spray primer

[0069] (1) Deploy the primer mixture and filter to obtain the primer to be sprayed; wherein, the filter is to use two layers of 400-mesh sieves to superimpose and filter twice; in this embodiment, the viscosity of the primer 8 seconds / NK2 cup;

[0070] The primer mixture comprises the following components by weight: hydroxyacrylic resin 32Kg, isocyanate 2 Kg, ethylene glycol ethyl ether acetate 66Kg;

[0071](2) Spray a primer on the metal surface after the wire drawing process, and dry it at 75°C for 13.5 minutes to obtain a primer with a film thickness of 2 μm;

[0072] (2) Medium-spray paint

[0073] (1) Deploy the intermediate paint m...

Embodiment 3

[0082] A wire drawing coating process for a mobile phone metal case, which comprises the following steps:

[0083] Step 1. Metal surface wire drawing treatment process

[0084] Use a laser engraving machine to carry out laser wire drawing on the metal surface;

[0085] Step 2. Coating process of metal surface

[0086] (1) Spray primer

[0087] (1) Deploy the primer mixture and filter to obtain the primer to be sprayed; wherein, the filter is to use two layers of 400-mesh sieves to superimpose and filter twice; in this embodiment, the viscosity of the primer 10 seconds / NK2 cup;

[0088] The primer mixture comprises the following components by weight: hydroxyacrylic resin 22.5Kg, isocyanate 2.5Kg, ethylene glycol ether acetate 65Kg;

[0089] (2) Spray the primer on the metal surface after the wire drawing process, and dry it at 70°C for 15 minutes to obtain a primer with a film thickness of 4 μm;

[0090] (2) Medium-spray paint

[0091] (1) Deploy the intermediate paint mi...

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Abstract

The invention relates to the technical field of wiredrawing and coating, in particular to a wiredrawing and coating process of a mobile phone metal shell. The wiredrawing and coating process of the mobile phone metal shell comprises the following steps that 1, laser wiredrawing is carried out on the metal surface through a laser etching machine; 2, the metal surface is coated with priming paint, intermediate paint and finishing paint. The priming paint comprises hydroxyl acrylic resin, isocyanate and ethylene glycol monoethyl ether acetate; the intermediate paint comprises amino acrylic resin, tetra-n-butyl titanate and ethylene glycol monoethyl ether acetate; the finishing paint comprises epoxy acrylic resin, tetra-n-butyl stannic acid and ethyl alcohol. According to the wiredrawing and coating process of the mobile phone metal shell, the wiredrawing effect is good, attractiveness is achieved, and the metal surface can obtain non-mirror metallic luster; the coating process does not cover the withdrawing, and therefore the wiredrawing effect is good; after the coating process, the test result on the reliability of the mobile phone metal shell is good, namely the abrasion resistance performance and high temperature and low temperature impact resistance performance are better.

Description

technical field [0001] The invention relates to the technical field of wire-drawing coating technology, in particular to a wire-drawing coating process for metal shells of mobile phones. Background technique [0002] With the popularization of mobile phones, people attach great importance to the appearance of mobile phones in addition to the performance requirements of mobile phones. For mobile phones with metal shells, the metal surface is often brushed to reflect the texture of the metal material, and at the same time, the metal surface can obtain a non-mirror-like metallic luster. Among them, the surface brushing treatment is a surface treatment method that forms lines on the surface of the workpiece by grinding products to achieve a decorative effect. In actual production, after the metal surface wire drawing process is completed, a coating process is required on the metal surface to protect and further decorate the wire drawing effect. [0003] However, in the prior a...

Claims

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Application Information

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IPC IPC(8): B05D7/14B23K26/362
Inventor 唐明高叶云洲廖章锦
Owner 东莞华誉精密技术有限公司
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