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A kind of metal casing and preparation method thereof

A technology of metal shell and metal base material, applied in metal shell, metal material coating process, vacuum evaporation plating and other directions, can solve the problems of high cost, difficult processing of gradient color metal shell, poor gradient effect, etc.

Active Publication Date: 2015-09-30
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of difficult processing, high cost, and poor gradient effect of gradient color metal shells in the prior art, a metal shell is provided, which has simple process, low cost, and good gradient effect. Strong texture, excellent wear resistance and corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment is used to illustrate the metal shell disclosed in the present invention and its preparation method.

[0038] Set up the speed control program of the conveying track according to the expected effect of the product. Within a conveying period of 20s, use a sandblasting pressure of 2 Pa and change the conveying speed according to the acceleration of 0.005m / s to control the step of the aluminum alloy with a thickness of 0.5mm. The time for each area on the surface of the aluminum alloy to be within the range of sandblasting increases gradually, so that different areas of the surface are bombarded by sand to different degrees, thereby forming an orderly gradient texture on the surface of the aluminum alloy. A total of 5 gradient regions are formed on the substrate, and the color gradually changes from dark to bright. The gradient texture is a hole-like pattern, wherein the diameter of the hole is 0.01mm, and the diameter of the hole in the transverse direction...

Embodiment 2

[0044] This embodiment is used to illustrate the metal shell disclosed in the present invention and its preparation method.

[0045] After cleaning the stainless steel surface with a thickness of 1.5mm, spray anti-etching photosensitive ink on the entire surface, bake and cure at 80°C for 15 minutes, then take out the stainless steel, use a film with a gradient pattern to cover the surface and put it into UV exposure In-machine exposure for 20s, exposure energy is 250mj / cm 2 . After exposure, use 1%Na 2 CO 3 Solution development, remove the ink on the unexposed part, and expose the part of the stainless steel surface that needs to be etched in the etching solution for 15 minutes. The ink on the surface is removed, so the etched lines on the surface of the stainless steel form a gradient effect on the film pattern. The gradient texture is a pattern of circular holes, wherein the gradient of the hole diameter in the transverse direction is 0.2 mm, and the gradient of the ho...

Embodiment 3

[0051] This embodiment is used to illustrate the metal shell disclosed in the present invention and its preparation method.

[0052] According to the requirements, make a gradient effect picture, edit the pattern into a corresponding program, and import the program into the laser engraving machine. Under the control of the program, the laser is used to complete the engraving on the surface of the zinc alloy with a thickness of 1mm, and a gradient texture will be produced. The gradient texture is a linear pattern, wherein the variation gradient of the line width in the transverse direction is 0.15mm, and the variation gradient of the line depth in the transverse direction is 0.02mm. The lateral variation gradient of the spacing between adjacent lines is 0.05 mm.

[0053] The zinc alloy after gradient laser etching is cleaned, and then placed on the turntable in the vacuum chamber. Start the vacuum pump to evacuate, so that the pressure of the vacuum chamber is 7.0×10 -3 Pa. ...

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Abstract

The invention provides a metal shell and a preparation method thereof. The metal shell comprises: a metal base material and a coating. A metal base material surface possesses a progressively-variant texture. The coating is located on the progressively-variant texture. The progressively-variant texture is a hole-shaped and / or linear pattern. In the hole-shaped pattern, a variation gradient of a hole diameter is from 0.01to 2.0 mm and / or the variation gradient of a distance between adjacent holes is from 0 to 2.0 mm; in the linear pattern, the variation gradient of a line width is 0.01-2.0mm and / or the variation gradient of the distance between adjacent lines is from 0-2.0mm. A preparation technology of the metal shell is simple. Cost is low. A gradual change effect is good. Simultaneously, a metallic sense of the metal shell is strong and wear-resistance and corrosion-resistance performance is good.

Description

technical field [0001] The invention relates to a metal shell and a preparation method thereof, in particular to a metal shell with a gradual color effect and a preparation method thereof. Background technique [0002] With the continuous improvement of living standards and the continuous development of mobile phone technology, people have higher and higher requirements for the appearance of mobile phones. Gradient is a phenomenon with strong regularity, which can produce a strong sense of perspective and space when used in visual design. It is a sequential and rhythmic change. Its unique decorative effect is very popular with consumers. At present, although metal coating products are rich in color, most of them are monochromatic. Although there are also methods of combining multi-colors, the boundaries of multi-colors are clear, and transitional gradient effects cannot be achieved. [0003] In order to meet the needs of mobile phones with a variety of colors and a gorgeou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/02H05K5/04C23C14/34C23C14/06C23C14/08
Inventor 邹凌云郭丽芬陈云
Owner BYD CO LTD
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