Metallic shell with three-dimensional pattern, method for manufacturing the same and electronic device

Abstract

The present disclosure provides a metal shell with a three-dimensional pattern, a preparation method thereof and an electronic device, the preparation method comprising: performing sand blasting treatment on the surface of the metal shell; performing laser etching treatment on a plurality of local regions of the metal shell, the laser etching directions of different regions being different; and performing single-color anodizing on the metal shell after laser etching to obtain a metal shell with a three-dimensional pattern. By performing sand blasting, laser etching and single-color anodizing on the surface of the metal shell, a metal shell with a three-dimensional pattern is obtained. By alternately performing laser etching in different directions on a plurality of local regions of the metal shell, diffuse reflection texture and specular reflection texture are formed, the reflection angle of light is changed microscopically, light and shadow changes at different angles are achieved, and a three-dimensional effect is achieved. Compared with the prior art, not only the appearance effect of the product can be improved, and the yield of the product can be improved, but also the preparation method can be further optimized, and the production efficiency of the metal shell can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of surface treatment technology, and in particular to a metal casing with a three-dimensional pattern, a method for preparing the same, and an electronic device. Background Technology

[0002] The appearance quality of consumer electronics products has become a crucial factor in attracting consumers, with the casing's aesthetics being a key aspect of product design. For metal casings, a three-dimensional effect can significantly enhance the product's appearance and perceived quality, making it more appealing to consumers.

[0003] Currently, giving metal casings a three-dimensional effect mostly involves applying decorative films to the surface of the metal casing or assembling components with three-dimensional patterns onto the surface of the metal casing. Removing a section from the surface of the metal casing to assemble other casings presents several problems: firstly, assembly tolerances exist, affecting the visual effect; secondly, the process is cumbersome and inefficient. Summary of the Invention

[0004] This disclosure provides a metal housing with a three-dimensional pattern, a method for preparing the same, and an electronic device, to at least solve the technical problems of large assembly tolerances and cumbersome processes in the prior art.

[0005] According to a first aspect of this disclosure, a method for preparing a metal casing with a three-dimensional pattern is provided, the method comprising:

[0006] The surface of the metal casing is sandblasted.

[0007] Laser engraving is performed on multiple local areas of the metal casing, with different laser engraving directions in different areas;

[0008] The laser-engraved metal casing is then subjected to monochrome anodizing to obtain a metal casing with a three-dimensional pattern.

[0009] In one embodiment, the laser engraving process is performed on multiple local areas of the metal casing, with different laser engraving directions in different areas, including:

[0010] Laser engraving is performed alternately in different directions on multiple local areas of the metal casing to create diffuse reflection textures and specular reflection textures.

[0011] In one embodiment, the laser engraving parameters for forming the diffuse reflection texture are: 760nm≤wavelength≤1650nm, 60W≤power≤80W, 1200mm / s≤laser engraving speed≤2000mm / s, and 0.05mm≤laser line width≤0.11mm.

[0012] In one embodiment, the laser engraving parameters for forming the mirror reflection texture are: 960nm≤wavelength≤1250nm, 85W≤power≤100W, 600mm / s≤laser engraving speed≤1000mm / s, and 0.01mm≤laser line width≤0.03mm.

[0013] In one embodiment, the sandblasting type is one or more of iron sand, zircon sand, and glass sand, the sandblasting pressure is 2-4 kg, and the linear velocity is 1 m / 12 s.

[0014] In one embodiment, performing monochrome anodizing on the laser-engraved metal casing to obtain a metal casing with a three-dimensional pattern includes:

[0015] Clean the laser-engraved metal casing to remove oil and dirt from its surface;

[0016] The cleaned metal casing is then chemically polished and cleaned again.

[0017] Using a metal shell as the anode, the surface of the metal shell is oxidized, washed with water, dyed or electrolytically colored, washed again with water, and sealed to obtain a metal shell with a three-dimensional pattern.

[0018] In one embodiment, before sandblasting the surface of the metal casing, the method further includes:

[0019] The surface of the metal casing is stamped and polished to improve its smoothness.

[0020] According to a second aspect of this disclosure, a metal casing is provided, which is prepared according to the preparation method described above.

[0021] According to a third aspect of this disclosure, an electronic device is provided, comprising a metal casing prepared by the above-described preparation method.

[0022] This invention provides a metal casing with a three-dimensional pattern, its manufacturing method, and an electronic device. The three-dimensional pattern is obtained by sandblasting, laser engraving, and monochromatic anodizing the surface of the metal casing. This invention achieves a three-dimensional effect by alternately laser engraving multiple local areas of the metal casing in different directions, forming diffuse reflection and specular reflection textures. This microscopically alters the light reflection angle, achieving light and shadow variations at different angles. Compared with existing technologies, this not only improves the product's appearance and yield but also further optimizes the manufacturing method and increases the production efficiency of the metal casing.

[0023] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0024] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0025] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0026] Figure 1 A schematic flowchart of a method for preparing a metal shell with a three-dimensional pattern according to an embodiment of the present disclosure is shown;

[0027] Figure 2 A schematic diagram of the microscopic texture of a metal surface is shown in an embodiment of this disclosure;

[0028] Figure 3 A metal casing sample diagram provided in an embodiment of this disclosure is shown. Detailed Implementation

[0029] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0030] Currently, to achieve a three-dimensional effect on the surface of a metal casing, the common process involves assembling components with three-dimensional patterns onto the metal casing surface. Removing a section from the metal casing surface to assemble other casings presents several drawbacks: firstly, assembly tolerances exist, affecting the visual effect; secondly, the process is cumbersome and inefficient.

[0031] Alternatively, a three-dimensional metal shell can be prepared by multiple sandblasting processes. The preparation process usually includes sandblasting, pre-oxidation, applying a protective film, secondary sandblasting, removing the protective film, and anodizing. Not only is the preparation process complicated, but multiple sandblasting processes also result in a rough surface on the product, affecting the final quality of the product.

[0032] Based on this, the present invention provides a method for preparing a metal shell with a three-dimensional pattern, such as... Figure 1 The diagram shows a flow chart of the preparation method, which includes the following steps:

[0033] S1. Sandblast the surface of the metal casing;

[0034] This embodiment uses a laptop casing as an example to illustrate the metal casing. Besides laptop casings, the metal casing can also be used for electronic devices such as mobile phones and projectors, or as a casing for internal components of electronic devices. This invention does not limit the specific application of the metal casing. In this embodiment, aluminum plate is used as an example because aluminum plate is lightweight and its application in laptop casings can effectively reduce the overall weight of the laptop. The metal material can also be an aluminum layer set on some polymer sheets to reduce the cost of the laptop casing. This invention does not limit the specific material of the metal casing.

[0035] In one example, before sandblasting the surface of the metal casing, the surface is first stamped and polished to improve its smoothness. The sandblasting type is one or more of iron sand, zirconium sand, and glass sand, with a sandblasting pressure of 2-4 kg and a linear velocity of 1 m / 12 s.

[0036] S2. Laser engraving is performed on multiple local areas of the metal casing, with different laser engraving directions in different areas;

[0037] In one example, laser engraving is performed on multiple localized areas of the metal casing, with different laser engraving directions in different areas, including:

[0038] Laser engraving is performed alternately in different directions on multiple local areas of the metal casing to create diffuse reflection textures and specular reflection textures.

[0039] Microscopic metal surface textures such as Figure 2 As shown, the laser-engraved diffuse reflection texture and laser-engraved mirror reflection texture are alternately set to create a jagged effect. Due to the different textures in different directions under a microscopic perspective, the surface gloss of the metal casing varies. When users observe the metal casing, the gloss level varies at different viewing angles, and the changes in light and shadow at different angles also vary, ultimately presenting a three-dimensional effect on the surface of the metal casing.

[0040] In one embodiment, the laser engraving parameters for forming the diffuse reflection texture are: 760nm≤wavelength≤1650nm, 60W≤power≤80W, 1200mm / s≤laser engraving speed≤2000mm / s, and 0.05mm≤laser line width≤0.11mm.

[0041] In one embodiment, the laser engraving parameters for forming the mirror reflection texture are: 960nm≤wavelength≤1250nm, 85W≤power≤100W, 600mm / s≤laser engraving speed≤1000mm / s, and 0.01mm≤laser line width≤0.03mm.

[0042] S3. Perform monochrome anodizing on the laser-engraved metal casing to obtain a metal casing with a three-dimensional pattern.

[0043] In one example, a single-color anodizing process is performed on the laser-engraved metal casing to obtain a metal casing with a three-dimensional pattern, including:

[0044] Clean the laser-engraved metal casing to remove oil and dirt from its surface;

[0045] The cleaned metal casing is then chemically polished and cleaned again.

[0046] Using a metal shell as the anode, the surface of the metal shell is oxidized, washed with water, dyed or electrolytically colored, washed again with water, and sealed to obtain a metal shell with a three-dimensional pattern.

[0047] The purpose of chemical polishing is to remove the rough surface unevenness of the metal casing. The main components of the chemical polishing solution are phosphoric acid, sulfuric acid, and a brightener. The specific steps of anodizing are as follows: the metal casing is placed in an anode tank as the anode, and the anode tank contains an oxidizing electrolyte. The metal casing undergoes an electrolytic reaction in the anode tank, forming a dense oxide film on its surface. The oxidized metal casing is then cleaned and placed in a dyeing tank for dyeing or electrolytic coloring. The role of the oxidizing electrolyte is to react with the metal casing to form a dense oxide film on its surface. In this embodiment, the oxidizing electrolyte is a sulfuric acid solution with a concentration of 180-220 g / L, a voltage of 14V, and a temperature of 19℃-20℃.

[0048] This invention provides a metal casing with a three-dimensional pattern, its manufacturing method, and an electronic device. The three-dimensional pattern is obtained by sandblasting, laser engraving, and monochromatic anodizing the surface of the metal casing. This invention achieves a three-dimensional effect by alternately laser engraving multiple local areas of the metal casing in different directions, forming diffuse reflection and specular reflection textures. This microscopically alters the light reflection angle, achieving light and shadow variations at different angles. Compared with existing technologies, this not only improves the product's appearance and yield but also further optimizes the manufacturing method and increases the production efficiency of the metal casing.

[0049] Another embodiment of the present invention provides a metal casing with a three-dimensional pattern, which is prepared by the above method. For example... Figure 3 The image shown is a schematic diagram of a metal shell with a three-dimensional pattern prepared according to the present invention. The image has been processed into grayscale. The three-dimensional pattern on the surface of the shell can be seen from the shell in the attached figure.

[0050] Example 1

[0051] A method for preparing a metal shell with a three-dimensional pattern includes the following steps:

[0052] S11. Stamp and polish the surface of the metal casing according to the size requirements of the laptop casing;

[0053] S12. Next, sandblast the surface of the metal casing using iron sand at a pressure of 2 kg and a linear velocity of 1 m / 12 s.

[0054] S13. Laser engraving is performed alternately on multiple local areas of the metal shell in different directions to form diffuse reflection texture and specular reflection texture. The laser engraving parameters for forming diffuse reflection texture are: wavelength 760nm, power, laser engraving speed 1200mm / s, and laser line width 0.05mm; the laser engraving parameters for forming specular reflection texture are: wavelength 960nm, power 85W, laser engraving speed 600mm / s, and laser line width 0.01mm.

[0055] S14. Clean the laser-engraved metal casing to remove oil stains from the surface of the metal casing; then chemically polish and clean the cleaned metal casing; use the metal casing as an anode to oxidize the surface of the metal casing, wash with water and then dye or electrolytically color it, wash with water again and seal the holes to obtain a metal casing with a three-dimensional pattern.

[0056] Example 2

[0057] A method for preparing a metal shell with a three-dimensional pattern includes the following steps:

[0058] S21. Stamp and polish the surface of the metal casing according to the size requirements of the laptop casing;

[0059] S22. Next, the surface of the metal casing is sandblasted with iron sand at a pressure of 3 kg and a linear velocity of 1 m / 12 s.

[0060] S23. Laser engraving is performed alternately on multiple local areas of the metal shell in different directions to form diffuse reflection texture and specular reflection texture. The laser engraving parameters for forming diffuse reflection texture are: wavelength 1250nm, power 70W, laser engraving speed 1600mm / s, and laser line width 0.08mm; the laser engraving parameters for forming specular reflection texture are: wavelength 1100nm, power 90W, laser engraving speed 800mm / s, and laser line width 0.02mm.

[0061] S24. Clean the laser-engraved metal casing to remove oil stains from the surface of the metal casing; then chemically polish and clean the cleaned metal casing; use the metal casing as an anode to oxidize the surface of the metal casing, wash with water and then dye or electrolytically color it, wash with water again and seal the holes to obtain a metal casing with a three-dimensional pattern.

[0062] Example 3

[0063] A method for preparing a metal shell with a three-dimensional pattern includes the following steps:

[0064] S31. Stamp and polish the surface of the metal casing according to the size requirements of the notebook casing;

[0065] S32. Next, the surface of the metal casing is sandblasted using glass abrasive at a pressure of 4 kg and a linear velocity of 1 m / 12 s.

[0066] S33. Laser engraving is performed alternately on multiple local areas of the metal shell in different directions to form diffuse reflection texture and specular reflection texture. The laser engraving parameters for forming diffuse reflection texture are: wavelength 1650nm, power 80W, laser engraving speed 2000mm / s, and laser line width 0.11mm; the laser engraving parameters for forming specular reflection texture are: wavelength 1250nm, power 100W, laser engraving speed 1000mm / s, and laser line width 0.03mm.

[0067] S34. Clean the laser-engraved metal casing to remove oil stains from the surface of the metal casing; then chemically polish and clean the cleaned metal casing; use the metal casing as an anode to oxidize the surface of the metal casing, wash with water and then dye or electrolytically color it, wash with water again and seal the holes to obtain a metal casing with a three-dimensional pattern.

[0068] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0070] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for preparing a metal shell with a three-dimensional pattern, characterized in that, The method includes: The surface of the metal casing is sandblasted. Laser engraving is performed on multiple local areas of the metal casing, with different laser engraving directions in different areas; The laser-engraved metal casing is then subjected to monochrome anodizing to obtain a metal casing with a three-dimensional pattern. The laser engraving process is performed on multiple local areas of the metal shell, with different laser engraving directions in different areas. This includes alternating laser engraving in different directions on multiple local areas of the metal shell to form diffuse reflection textures and specular reflection textures. Within each local area, the diffuse reflection texture and specular reflection texture alternately present multiple continuous serrated protrusions. One side of each serrated protrusion is a diffuse reflection texture, and the other side is a specular reflection texture.

2. The method according to claim 1, characterized in that, The laser engraving parameters for forming the diffuse reflection texture are: 760nm≤wavelength≤1650nm, 60W≤power≤80W, 1200mm / s≤laser engraving speed≤2000mm / s, and 0.05mm≤laser line width≤0.11mm.

3. The method according to claim 1, characterized in that, The laser engraving parameters for forming the mirror reflection texture are: 960nm≤wavelength≤1250nm, 85W≤power≤100W, 600mm / s≤laser engraving speed≤1000mm / s, and 0.01mm≤laser line width≤0.03mm.

4. The method according to claim 1, characterized in that, The sandblasting type is one or more of iron sand, zircon sand, and glass sand, the sandblasting pressure is 2-4 kg, and the linear speed is 1 m / 12 s.

5. The method according to claim 1, characterized in that, The process of performing monochrome anodizing on the laser-engraved metal casing to obtain a metal casing with a three-dimensional pattern includes: Clean the laser-engraved metal casing to remove oil and dirt from its surface; The cleaned metal casing is then chemically polished and cleaned again. Using a metal shell as the anode, the surface of the metal shell is oxidized, washed with water, dyed or electrolytically colored, washed again with water, and sealed to obtain a metal shell with a three-dimensional pattern.

6. The method according to claim 1, characterized in that, Before sandblasting the surface of the metal casing, the method further includes: The surface of the metal casing is stamped and polished to improve its smoothness.

7. A metal casing prepared by the method according to any one of claims 1-6.

8. An electronic device, characterized in that, Includes the metal casing as described in claim 7.

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