CN113133236A - Preparation method of shell assembly, shell assembly and electronic equipment - Google Patents
Preparation method of shell assembly, shell assembly and electronic equipment Download PDFInfo
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- CN113133236A CN113133236A CN201911404179.6A CN201911404179A CN113133236A CN 113133236 A CN113133236 A CN 113133236A CN 201911404179 A CN201911404179 A CN 201911404179A CN 113133236 A CN113133236 A CN 113133236A
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- 238000002360 preparation method Methods 0.000 title abstract description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 146
- 239000000463 material Substances 0.000 claims abstract description 98
- 229910052751 metal Inorganic materials 0.000 claims abstract description 89
- 239000002184 metal Substances 0.000 claims abstract description 89
- 230000003647 oxidation Effects 0.000 claims abstract description 41
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 41
- 239000000758 substrate Substances 0.000 claims abstract description 38
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- 238000000576 coating method Methods 0.000 claims abstract description 33
- 239000010410 layer Substances 0.000 claims description 163
- 238000007747 plating Methods 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 30
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 239000003292 glue Substances 0.000 claims description 18
- 238000005498 polishing Methods 0.000 claims description 18
- 239000012790 adhesive layer Substances 0.000 claims description 12
- 230000000873 masking effect Effects 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 7
- 238000010329 laser etching Methods 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 4
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical group [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 3
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000007888 film coating Substances 0.000 claims 1
- 238000009501 film coating Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 50
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 244000137852 Petrea volubilis Species 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000010407 anodic oxide Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
- H05K5/0243—Mechanical details of casings for decorative purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F1/00—Designs or pictures characterised by special or unusual light effects
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The application discloses a preparation method of a shell assembly, the shell assembly and an electronic device. The preparation method of the shell assembly comprises the following steps: providing an aluminum alloy shell substrate, wherein the aluminum alloy shell substrate is provided with an inner surface and an outer surface which are oppositely arranged; performing first treatment on the aluminum alloy shell base material to form a metal coating on the outer surface of the aluminum alloy shell base material; performing second treatment on the aluminum alloy shell base material subjected to the first treatment to form an anodic oxidation layer on the outer surface of the aluminum alloy shell base material, wherein the anodic oxidation layer and the metal coating form a first pattern texture; and carrying out third treatment on the aluminum alloy shell base material subjected to the second treatment so as to form a second pattern texture on the surface of the first pattern texture. The technical scheme of this application can richen aluminum alloy shell's outward appearance effect, satisfies the pursuit of user to the stereoeffect.
Description
Technical Field
The present disclosure relates to the field of electronic products, and in particular, to a method for manufacturing a housing assembly, a housing assembly manufactured by the method, and an electronic device using the housing assembly.
Background
With the development and progress of technology, aluminum alloy housings have been widely used in electronic devices. However, in the related art, the surface treatment process of the aluminum alloy shell substrate mainly comprises sandblasting anodic oxidation, so that a single matte or bright surface effect is generally obtained, the appearance effect is relatively limited, the homogeneity of the appearance effect of the aluminum alloy shell is serious, and the pursuit of a user for a three-dimensional effect cannot be met.
The above contents are only for assisting understanding of the technical solution of the present application, and do not represent an admission that the above contents are prior art.
Content of application
The application mainly aims to provide a preparation method of a shell assembly, the shell assembly prepared by the preparation method of the shell assembly and electronic equipment applying the shell assembly, and aims to enrich the appearance effect of an aluminum alloy shell and meet the pursuit of a user on a three-dimensional effect.
An embodiment of the present application provides a method for manufacturing a housing assembly, including the steps of:
providing an aluminum alloy shell substrate, wherein the aluminum alloy shell substrate is provided with an inner surface and an outer surface which are oppositely arranged;
performing first treatment on the aluminum alloy shell base material to form a metal coating on the outer surface of the aluminum alloy shell base material;
performing second treatment on the aluminum alloy shell base material subjected to the first treatment to form an anodic oxidation layer on the outer surface of the aluminum alloy shell base material, wherein the anodic oxidation layer and the metal coating form a first pattern texture;
and carrying out third treatment on the aluminum alloy shell base material subjected to the second treatment so as to form a second pattern texture on the surface of the first pattern texture.
An embodiment of the present application further provides a housing assembly, which is prepared by a method for preparing a housing assembly, the method for preparing a housing assembly including the steps of:
providing an aluminum alloy shell substrate, wherein the aluminum alloy shell substrate is provided with an inner surface and an outer surface which are oppositely arranged;
performing first treatment on the aluminum alloy shell base material to form a metal coating on the outer surface of the aluminum alloy shell base material;
performing second treatment on the aluminum alloy shell base material subjected to the first treatment to form an anodic oxidation layer on the outer surface of the aluminum alloy shell base material, wherein the anodic oxidation layer and the metal coating form a first pattern texture;
and carrying out third treatment on the aluminum alloy shell base material subjected to the second treatment so as to form a second pattern texture on the surface of the first pattern texture.
An embodiment of the present application also provides a housing assembly, including:
an aluminum alloy housing substrate having an inner surface and an outer surface disposed in a back-to-back arrangement;
a metal plating layer formed on an outer surface of the aluminum alloy case base material;
the anodic oxidation layer is formed on the outer surface of the aluminum alloy shell base material and forms a first pattern texture with the metal coating;
the surface of the first pattern texture is also formed with a second pattern texture.
An embodiment of the present application also provides an electronic device, including:
a housing assembly;
the display screen assembly is covered with the shell assembly and encloses to form an accommodating space, and the inner surface of the shell assembly is positioned in the accommodating space; and
the mainboard is arranged in the accommodating space and is electrically connected with the display screen assembly;
the housing assembly includes:
an aluminum alloy housing substrate having an inner surface and an outer surface disposed in a back-to-back arrangement;
a metal plating layer formed on an outer surface of the aluminum alloy case base material;
the anodic oxidation layer is formed on the outer surface of the aluminum alloy shell base material and forms a first pattern texture with the metal coating;
the surface of the first pattern texture is also formed with a second pattern texture.
According to the technical scheme, two layers of pattern textures are formed on the outer surface of the aluminum alloy shell base material. The two layers of patterns are mutually overlapped and mutually matched, so that the appearance effect of compounding multiple layers of textures on the obtained aluminum alloy shell can be realized; in addition, because different patterns and textures are in a laminated relation, the appearance effect also has good layering and stereoscopic impression. Therefore, the appearance effect of the aluminum alloy shell is greatly enriched, and the pursuit of users on the stereoscopic effect is met.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other embodiments can be obtained by changing the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a first exemplary embodiment of a method of making a housing assembly of the present application;
FIG. 2 is a schematic flow chart diagram illustrating an exemplary embodiment of step S30 in FIG. 1;
FIG. 3 is a schematic flow chart diagram illustrating an exemplary embodiment of step S40 in FIG. 1;
FIG. 4 is a schematic flow chart diagram illustrating an exemplary embodiment of step S50 in FIG. 1;
FIG. 5 is a schematic flow chart of a second exemplary embodiment of a method of making a housing assembly of the present application;
FIG. 6 is a schematic flow chart of a third exemplary embodiment of a method of making a housing assembly of the present application;
FIG. 7 is a schematic structural view of an embodiment of the housing assembly of the present application;
fig. 8 is a top view of the housing assembly of fig. 7.
The reference numbers illustrate:
the implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flow chart of a first exemplary embodiment of a method for manufacturing a housing assembly according to the present application. In this embodiment, the method of making the housing assembly includes the steps of:
s10, providing an aluminum alloy shell base material, wherein the aluminum alloy shell base material is provided with an inner surface and an outer surface which are oppositely arranged; wherein, the inner surface refers to the surface of the aluminum alloy shell base material facing the internal space of the electronic equipment, and the outer surface refers to the surface of the aluminum alloy shell base material facing the external space of the electronic equipment;
s30, performing first treatment on the aluminum alloy shell base material to form a metal plating layer on the outer surface of the aluminum alloy shell base material;
s40, performing second treatment on the aluminum alloy shell base material subjected to the first treatment to form an anodic oxidation layer on the outer surface of the aluminum alloy shell base material, wherein the anodic oxidation layer and the metal plating layer form a first pattern texture;
the metal plating layer and the anodic oxidation layer are both formed on the outer surface of the aluminum alloy shell base material, and the metal plating layer and the anodic oxidation layer are distributed on the entire outer surface of the aluminum alloy shell base material together, that is, the first pattern texture is distributed on the entire outer surface of the aluminum alloy shell base material. For example, the metal plating layer occupies one half of the area of the outer surface of the aluminum alloy shell substrate, and the anodic oxidation layer occupies the other half of the area of the outer surface of the aluminum alloy shell substrate; or the metal coating layer occupies one third of the area of the outer surface of the aluminum alloy shell base material, and the anodic oxidation layer occupies the other two thirds of the area of the outer surface of the aluminum alloy shell base material; or the proportion of the metal coating and the anodic oxidation layer on the outer surface of the aluminum alloy shell base material can be adjusted according to actual requirements. Moreover, the following distribution can exist between the metal coating and the anodic oxidation layer: the metal coating layer consists of a plurality of metal coating layer units, the anodic oxidation layer consists of a plurality of anodic oxidation layer units, the metal coating layer units and the anodic oxidation layer units are alternately distributed on the outer surface of the aluminum alloy shell base material, the metal coating layer units can be in a strip shape, a block shape and the like, and the anodic oxidation layer units can be in a strip shape, a block shape and the like.
And S50, performing third treatment on the aluminum alloy shell base material subjected to the second treatment to form a second pattern texture on the surface of the first pattern texture.
The second pattern texture may be formed only on the surface of the metal plating layer, only on the surface of the anodized layer, or on both the surface of the metal plating layer and the surface of the anodized layer. And when the aluminum alloy shell base material is seen from the normal direction of the outer surface of the aluminum alloy shell base material, the area where the second pattern texture is located can cover the whole area where the first pattern texture is located, and can also only cover the part where the first pattern texture is located.
Understandably, according to the technical scheme of the application, two layers of pattern textures are formed on the outer surface of the aluminum alloy shell base material. The two layers of patterns are mutually overlapped and mutually matched, so that the appearance effect of compounding multiple layers of textures on the obtained aluminum alloy shell can be realized; in addition, because different patterns and textures are in a laminated relation, the appearance effect also has good layering and stereoscopic impression. Therefore, the appearance effect of the aluminum alloy shell is greatly enriched, and the pursuit of users on the stereoscopic effect is met.
In addition, the appearance effect of richer layering and stereoscopic impression can be realized by using the gloss and color difference between the anodic oxidation layer and the metal coating. In addition, because the aluminum alloy shell substrate is selected, the forming process of the metal coating and the forming process of the anodic oxidation layer can be directly carried out on the surface of the aluminum alloy shell substrate, and the method is simple, convenient, efficient and reliable.
The second pattern texture can be an ink layer with pattern texture, an ultraviolet light curing glue layer with pattern texture or other light-transmitting material layers with pattern texture and is arranged on the surface of the first pattern texture; alternatively, the first pattern texture surface may be etched (e.g., laser etched, photo etched, etc.) to obtain a sunken pattern texture, e.g., a plurality of trenches.
Further, referring to fig. 7 and 8, in this embodiment, the metal plating layer 31 is composed of a plurality of strip-shaped metal plating layer units, the anodized layer 33 is composed of a plurality of strip-shaped anodized layer units, and the strip-shaped metal plating layer units and the strip-shaped anodized layer units are alternately arranged; the metal plating layer 31 and the anodized layer 33 together form a first pattern texture 30 and are distributed over the entire outer surface of the aluminum alloy case base material 10. And, the second pattern texture 50 is composed of a plurality of arc-shaped grooves disposed on the surfaces of the metal plating layer 31 and the anodized layer 33.
Further, the case assembly produced by the case assembly production method is an aluminum alloy case as described above and hereinafter.
Referring to fig. 2, in an embodiment of the step S30, the step of performing a first treatment on the aluminum alloy case substrate to form a metal plating layer on an outer surface of the aluminum alloy case substrate, that is, step S30, includes:
s31, performing glue spraying treatment on the outer surface of the aluminum alloy shell base material to form a shielding glue layer on the outer surface of the aluminum alloy shell base material;
specifically, the strippable masking glue is sprayed on the outer surface of the aluminum alloy shell base material, so that a masking glue layer can be formed on the outer surface of the aluminum alloy shell base material, and the masking preparation is made for the subsequent vacuum coating. The thickness range of the masking glue layer is 10-50 microns. Understandably, the thickness of the shielding adhesive layer is not too large or too small; if the size is too large, the subsequent laser etching process is difficult and is not easy to peel off; if the content is too small, the protection strength of the material below the material is weakened; therefore, the present application sets the thickness of the masking tape layer in a range of not less than 10 micrometers and not more than 50 micrometers.
S32, performing laser etching treatment on the shielding adhesive layer to expose part of the outer surface of the aluminum alloy shell substrate from the shielding adhesive layer;
specifically, the shielding adhesive layer can be subjected to laser etching treatment by adopting optical fiber laser equipment according to the actual design requirements of pattern textures, so that part of the shielding adhesive layer on the outer surface of the aluminum alloy shell substrate is removed by the laser etching, part of the outer surface of the aluminum alloy shell substrate is exposed by the shielding adhesive layer, hollow-out pattern textures are formed, and a conductive surface is provided for subsequent vacuum coating. The laser etching treatment has the advantages of convenience in processing and high precision, the production efficiency of the shell assembly can be improved, and the precision of the hollowed-out pattern textures can be higher, so that the precision of a metal plating layer formed subsequently is improved, and the deviation between the actual pattern textures and the designed pattern textures is reduced. After the working procedure, the outer surface of the aluminum alloy shell base material is divided into a shielding area and a non-shielding area, the shielding area is covered with a shielding adhesive layer, and the outer surface of the aluminum alloy shell base material in the non-shielding area is exposed.
And S33, performing film plating treatment on the outer surface of the aluminum alloy shell base material exposed by the shielding adhesive layer to form the metal plating layer.
Specifically, the outer surface of the aluminum alloy shell base material exposed by the shielding glue layer is subjected to vacuum resistance wire evaporation coating in a vacuum evaporation coating mode. The target material can be indium, aluminum or indium-tin alloy, namely the metal coating is an indium layer, an aluminum layer or an indium-tin alloy layer. After the working procedure, a metal coating is formed on the non-shielding area on the outer surface of the aluminum alloy shell base material, and the shielding area is still covered with a shielding adhesive layer. At this time, the surface of the metal plating layer has a bright silver appearance effect, which is different from the surface effect of the aluminum alloy shell base material under the shielding region. The thickness of the metal coating ranges from 1 micron to 5 microns.
Through the steps, the high-precision metal coating can be obtained; and the operability of the metal coating is realized, namely based on the steps, the customization of the metal coating is realized, namely the pattern texture effect of the metal coating can be changed according to the actual design requirement, and the metal coating with different pattern texture effects can be processed in the same process step to meet different appearance requirements. Therefore, the limitation of the single appearance process of the aluminum alloy shell base material in the related technology is greatly broken through, the single matte or bright surface effect is broken through, the multilayer composite appearance effect such as gradual change, grating or other designs can be realized, and more choices are provided for the appearance process of the aluminum alloy shell base material.
Referring to fig. 3, in an embodiment of the step S30 shown in fig. 2, in the step S40, the step of performing a second treatment on the aluminum alloy casing substrate subjected to the first treatment to form an anodized layer on an outer surface of the aluminum alloy casing substrate, that is, step S40, includes:
s41, removing the residual masking glue layer to expose the outer surface of the aluminum alloy shell base material which is not covered by the metal plating layer;
specifically, the masking glue is a peelable masking glue, and the remaining masking glue layer on the outer surface of the aluminum alloy shell substrate is peeled, that is, the masking glue layer on the masking area on the outer surface of the aluminum alloy shell substrate is peeled to expose the outer surface of the aluminum alloy shell substrate which is not covered by the metal plating layer. At this time, the metallic plating layer and the non-metallic plating layer region (the outer surface of the aluminum alloy case base material not covered with the metallic plating layer) form a gloss difference and a color difference, thereby realizing a pattern texture required for design.
And S42, carrying out anodic oxidation treatment on the outer surface of the aluminum alloy shell base material which is not covered by the metal plating layer to form the anodic oxidation layer.
Specifically, the main steps of the anodic oxidation treatment are as follows:
degreasing (in a weak alkaline environment, the pH value is less than 9.5) → ash removal → anodic oxidation (the concentration of sulfuric acid is 220 g/L-240 g/L, the concentration of aluminum ions is 1 g/L-10 g/L, the temperature is 18-20 ℃, the oxidation voltage is 8V-9V, and the time is 10 min-40 min) → surface conditioning (2 times) → ultrasonic water washing → dyeing (dye formula is prepared according to the required color) → hole sealing (the concentration is 10 g/L-12 g/L, the temperature is 95-98 ℃, and the time is 40 min-50 min) → drying.
After the procedure, the non-metal coating area is anodized and dyed to form an anodic oxide layer (the thickness is 3-15 microns). The anodized layer and the metal plating layer together form a first pattern texture.
Through the steps, the high-precision anodic oxide layer can be obtained; at the moment, the anodic oxidation layer generates a scattering effect on light, a frosted surface effect is presented, and the color is darker; the metal coating layer has a reflection effect on light, and has a mirror surface gloss effect and bright color; thus, the effects of gradual change, raster and the like of the appearance can be better realized by using the gloss difference and the color difference of the anodic oxidation layer and the metal coating. And the application of the steps also realizes the operability of the anodic oxidation layer, namely based on the steps, the customization of the anodic oxidation layer is also realized, namely the pattern texture effect presented by the anodic oxidation layer can be changed according to the actual design requirement, and the anodic oxidation layer presenting different pattern texture effects can be processed in the same process step to meet different appearance requirements. Therefore, the limitation of the single appearance process of the aluminum alloy shell base material in the related technology is greatly broken through, the single matte or bright surface effect is broken through, the multilayer composite appearance effect such as gradual change, grating or other designs can be realized, and more choices are provided for the appearance process of the aluminum alloy shell base material.
It can be understood that the precision of the first pattern texture formed by the anodized layer and the metal coating layer can be improved by the above steps, so as to improve the appearance effect of the first pattern texture.
It should be noted that, when the metal coating is an aluminum layer, although the aluminum layer is also anodized, the surface of the anodized aluminum layer is darker than the anodized layer on the outer surface of the aluminum alloy housing base material, and a difference between the color and the luster can still be generated between the anodized aluminum layer and the anodized aluminum layer.
Referring to fig. 4, in an embodiment of the step S50, the step of performing a third treatment on the aluminum alloy housing substrate subjected to the second treatment to form a second pattern texture on the surface of the first pattern texture, namely step S50, includes:
and S51, performing turning and milling treatment on the surface of the first pattern texture to turn and mill a second pattern texture on the surface of the first pattern texture.
Specifically, a five-axis precision numerical control machine tool and a single crystal diamond cutter are adopted to further turn and mill the surfaces of the metal coating and the anodic oxidation layer so as to process and carve the second layer of texture patterns. The pattern texture milled by the cutter can be designed according to the actual pattern texture design requirement, and is matched and overlapped with the pattern texture formed by the metal plating layer and the anodic oxidation layer, so that a combined pattern effect with more layering and three-dimensional sense is formed, for example: gradient effect, raster effect, or other effects that meet design requirements.
The turning and milling treatment has the advantages of convenience in processing and high precision, the production efficiency of the shell assembly can be improved, the precision of the obtained second pattern texture can be higher, the appearance effect after the second pattern texture is superposed and combined with the first pattern texture is better, and the deviation between the actual pattern texture and the designed pattern texture is effectively reduced.
Referring to fig. 5, fig. 5 is a schematic flow chart of a manufacturing method of the housing assembly according to the second exemplary embodiment of the present application. In this embodiment, after the step of performing the third treatment on the aluminum alloy housing base material subjected to the second treatment to form the second pattern texture on the surface of the first pattern texture, the method further includes:
and S60, performing surface treatment on the aluminum alloy shell base material subjected to the third treatment to form a protective layer on the side, away from the aluminum alloy shell base material, of the second pattern texture.
Specifically, for the aluminum alloy shell substrate subjected to the third treatment, a spraying treatment of an ultraviolet curing type finish paint can be further performed on one side of the second pattern texture, which is away from the aluminum alloy shell substrate, so as to form a protective layer on the outermost side of the shell assembly, so as to protect the inner layer structure, protect the aluminum alloy shell substrate and improve the scratch resistance of the shell assembly.
The ultraviolet light fixing type finish paint is selected, and ultraviolet light is utilized to solidify the finish paint, so that the processing process of the protective layer can be effectively simplified, the processing convenience of the protective layer is improved, and the production efficiency of the shell assembly is improved.
Referring to fig. 6, fig. 6 is a schematic flow chart illustrating a method for manufacturing a housing assembly according to a third exemplary embodiment of the present application. In this embodiment, before the step of performing the first treatment on the aluminum alloy case base material to form the metal plating layer on the outer surface of the aluminum alloy case base material, the method further includes:
and S20, polishing the outer surface of the aluminum alloy shell base material.
Specifically, the main processes of the polishing treatment are as follows: rough polishing, middle polishing and mirror polishing.
The rough polishing is wet polishing by matching 1000# to 2000# sponge sand paper with pure water;
the middle polishing is wet polishing by matching 4000# to 5000# sponge sand paper with pure water;
the mirror surface polishing has the following two schemes:
(1) mirror polishing is carried out by matching an ultrafine cloth wheel with polishing wax such as white wax, green wax and the like;
(2) adopting polyurethane damping mirror polishing leather to match with the mirror polishing of silicon oxide polishing solution (or aluminum oxide polishing solution);
the outer surface of the aluminum alloy shell base material can achieve a mirror surface effect after being polished; namely, the outer surface of the aluminum alloy shell base material can have a mirror reflection effect, and the glossiness G value is larger than 600.
Understandably, the flatness and cleanliness of the outer surface of the aluminum alloy shell base material are effectively improved after polishing treatment; the shielding glue film that forms on such surface can be laminated more closely with the surface of aluminum alloy housing substrate, not only can there be electrostatic action between the two, still there is the effect of intermolecular force, thereby can ensure to obtain the shielding glue film that combines well with aluminum alloy housing substrate, promote the shielding effect who shields the glue film, promote the effect of coating film treatment, thereby obtain high quality, the metal coating that combines reinforce, guarantee the precision of first pattern texture and the stability when carrying out the turn-milling and handling, and then promote the quality of superimposed pattern texture, realize better outward appearance effect.
The present application also proposes a shell component prepared by the method for preparing a shell component as described above, and the specific flow of the method for preparing a shell component is detailed in the foregoing embodiments. Since the housing assembly adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by all the technical solutions of all the embodiments are achieved, and no further description is given here.
As shown in fig. 7 and 8, the present application also proposes a housing assembly 100, comprising:
an aluminum alloy case substrate 10, the aluminum alloy case substrate 10 having an inner surface and an outer surface disposed back to back;
a metal plating layer 31, the metal plating layer 31 being formed on an outer surface of the aluminum alloy case base material 10;
an anodized layer 33, wherein the anodized layer 33 is formed on the outer surface of the aluminum alloy housing base material 10, and forms a first pattern texture 30 with the metal plating layer 31;
the surface of the first pattern texture 30 is also formed with a second pattern texture 50.
In this embodiment, the metal plating layer 31 is composed of a plurality of strip-shaped metal plating layer units, the anodized layer 33 is composed of a plurality of strip-shaped anodized layer units, and the strip-shaped metal plating layer units and the strip-shaped anodized layer units are alternately arranged; the metal plating layer 31 and the anodized layer 33 together form a first pattern texture 30 and are distributed over the entire outer surface of the aluminum alloy case base material 10. And, the second pattern texture 50 is composed of a plurality of arc-shaped grooves disposed on the surfaces of the metal plating layer 31 and the anodized layer 33.
According to the technical scheme, two layers of pattern textures are formed on the outer surface of the aluminum alloy shell base material 10. The two layers of patterns are mutually overlapped and mutually matched, so that the appearance effect of compounding multiple layers of textures on the obtained aluminum alloy shell can be realized; in addition, because different patterns and textures are in a laminated relation, the appearance effect also has good layering and stereoscopic impression. Therefore, the appearance effect of the aluminum alloy shell is greatly enriched, and the pursuit of users on the stereoscopic effect is met.
Further, an embedding position 331 penetrating through the anodized layer 33 is formed on a surface of the anodized layer 33 facing away from the aluminum alloy housing base material 10, and the metal plating layer 31 is embedded in the embedding position 331.
It should be noted that the embedding position 331 on the anodized layer 33 may be a linear avoiding groove, a curved avoiding groove, a square groove, or a circular through hole; the embedding position 331 can be a single position or a plurality of positions; when a plurality of the embedding locations 331 exist at the same time, the plurality of the embedding locations 331 may be staggered with each other, or may not be staggered with each other.
Thus, the contrast of the first pattern texture 30 formed by the anodized layer 33 and the metal plating layer 31 is further improved, and the appearance effect is further improved. Also, the stability of the anodized layer 33 and the metal plating layer 31 is better.
Further, the anodized layer 33 and the metal plating layer 31 may be further configured as follows:
there is a difference in thickness between the anodized layer 33 and the metal plating layer 31.
Specifically, the thickness of the anodized layer 33 ranges from 3 micrometers to 15 micrometers, and the thickness of the metal plating layer 31 ranges from 1 micrometer to 5 micrometers. In this embodiment, the thickness of the anodized layer 33 is thicker than that of the metal plating layer 31. Of course, in other embodiments, the thickness of the metal plating layer 31 may be thicker than the thickness of the anodized layer 33.
It can be understood that when there is a thickness difference between the anodized layer 33 and the metal plating layer 31, the surface available for reflecting light outside the aluminum alloy shell is increased, and the outgoing angle of the reflected light is also enriched; therefore, the appearance effect of the finally obtained aluminum alloy shell is more remarkable.
It should be noted that the thickness of the anodized layer 33 should not be too large or too small; if it is too large, the quality of the anodized layer 33 is deteriorated, resulting in appearance defects such as insufficient color; if the amount is too small, the stability of the anodized layer 33 is insufficient, and the anodized layer is liable to fall off, resulting in a decrease in reliability; therefore, the present application sets the thickness of the anodized layer 33 to be in the range of not less than 3 micrometers and not more than 15 micrometers.
The thickness of the metal plating layer 31 should not be too large or too small; if it is too large, the adhesion property of the metal plating layer 31 is deteriorated, the stability is deteriorated, and the metal plating layer is likely to peel off; meanwhile, the cost is wasted; if it is too small, the "bright color" effect of the metal plating layer 31 is reduced, and the appearance effect is deteriorated; therefore, the present application sets the thickness of the metal plating layer 31 in a range of not less than 1 micrometer and not more than 5 micrometers.
Further, in order to form a protective layer (not shown) on the outermost side of the case assembly 100 for protecting the inner layer structure, protecting the aluminum alloy case base material 10, and improving the scratch resistance of the case assembly 100, a protective layer is formed on the side of the second pattern texture 50 facing away from the aluminum alloy case base material 10.
The present application also proposes an electronic device, which includes the housing assembly 100 as described above, and the specific structure of the housing assembly 100 is detailed in the foregoing embodiments. Since the electronic device adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by all the technical solutions of all the embodiments are achieved, and no further description is given here. Wherein the electronic device further comprises:
the display screen assembly is covered with the shell assembly 100 and encloses to form an accommodating space, and the inner surface of the shell assembly 100 is positioned in the accommodating space; and
the mainboard is arranged in the accommodating space and is electrically connected with the display screen assembly.
It is understood that the electronic device may be, but is not limited to, a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), an e-book reader, an MP3 (motion Picture Experts Group Audio Layer III) player, an MP4 (motion Picture Experts Group Audio Layer IV) player, a notebook computer, a car computer, a set-top box, a smart tv, a wearable device, a navigator, a handheld game console, etc.
The above description is only an alternative embodiment of the present application, and not intended to limit the scope of the present application, and all equivalent modifications made by the present specification and drawings or directly/indirectly applied to other related technical fields under the inventive concept of the present application are included in the scope of the present application.
Claims (12)
1. A method of making a housing assembly, comprising the steps of:
providing an aluminum alloy shell substrate, wherein the aluminum alloy shell substrate is provided with an inner surface and an outer surface which are oppositely arranged;
performing first treatment on the aluminum alloy shell base material to form a metal coating on the outer surface of the aluminum alloy shell base material;
performing second treatment on the aluminum alloy shell base material subjected to the first treatment to form an anodic oxidation layer on the outer surface of the aluminum alloy shell base material, wherein the anodic oxidation layer and the metal coating form a first pattern texture;
and carrying out third treatment on the aluminum alloy shell base material subjected to the second treatment so as to form a second pattern texture on the surface of the first pattern texture.
2. The production method according to claim 1, wherein the step of subjecting the aluminum alloy case base material to a first treatment to form a metal plating layer on an outer surface of the aluminum alloy case base material comprises:
spraying glue on the outer surface of the aluminum alloy shell base material to form a shielding glue layer on the outer surface of the aluminum alloy shell base material;
performing laser etching treatment on the shielding adhesive layer to expose part of the outer surface of the aluminum alloy shell substrate from the shielding adhesive layer;
and carrying out film coating treatment on the outer surface of the aluminum alloy shell base material exposed by the shielding adhesive layer to form the metal coating.
3. The production method according to claim 2, wherein the step of subjecting the aluminum alloy case substrate subjected to the first treatment to a second treatment to form an anodized layer on an outer surface of the aluminum alloy case substrate comprises:
removing the residual masking glue layer to expose the outer surface of the aluminum alloy shell base material which is not covered by the metal plating layer;
and carrying out anodic oxidation treatment on the outer surface of the aluminum alloy shell base material which is not covered by the metal coating to form the anodic oxidation layer.
4. The method of claim 1, wherein the metal plating layer is an indium layer, an aluminum layer, or an indium tin alloy layer.
5. The production method according to claim 1, wherein the step of subjecting the aluminum alloy housing base material subjected to the second treatment to a third treatment to form a second pattern texture on the surface of the first pattern texture comprises:
and performing turning and milling treatment on the surface of the first pattern texture to turn and mill a second pattern texture on the surface of the first pattern texture.
6. The production method according to any one of claims 1 to 5, wherein the step of subjecting the aluminum alloy housing base material subjected to the second treatment to a third treatment to form a second pattern texture on the surface of the first pattern texture further comprises:
and carrying out surface treatment on the aluminum alloy shell base material subjected to the third treatment so as to form a protective layer on one side of the second pattern texture, which is far away from the aluminum alloy shell base material.
7. The production method according to any one of claims 1 to 5, wherein the step of subjecting the aluminum alloy case base material to a first treatment to form a metal plating layer on an outer surface of the aluminum alloy case base material further comprises:
and polishing the outer surface of the aluminum alloy shell base material.
8. A housing component produced by the method of producing a housing component according to any one of claims 1 to 7.
9. A housing assembly, comprising:
an aluminum alloy housing substrate having an inner surface and an outer surface disposed in a back-to-back arrangement;
a metal plating layer formed on an outer surface of the aluminum alloy case base material;
the anodic oxidation layer is formed on the outer surface of the aluminum alloy shell base material and forms a first pattern texture with the metal coating;
the surface of the first pattern texture is also formed with a second pattern texture.
10. The housing assembly of claim 9, wherein a surface of the anodized layer facing away from the aluminum alloy housing substrate is formed with an embedded location penetrating through the anodized layer, and the metal plating layer is embedded in the embedded location.
11. The production method according to claim 9 or 10, wherein there is a difference in thickness between the anodized layer and the metal plating layer.
12. An electronic device, comprising:
a housing assembly as claimed in any one of claims 8 to 11;
the display screen assembly is covered with the shell assembly and encloses to form an accommodating space, and the inner surface of the shell assembly is positioned in the accommodating space; and
the mainboard is arranged in the accommodating space and is electrically connected with the display screen assembly.
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