CN106358408B - A kind of communication apparatus metal shell and preparation method thereof - Google Patents
A kind of communication apparatus metal shell and preparation method thereof Download PDFInfo
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- CN106358408B CN106358408B CN201510416025.4A CN201510416025A CN106358408B CN 106358408 B CN106358408 B CN 106358408B CN 201510416025 A CN201510416025 A CN 201510416025A CN 106358408 B CN106358408 B CN 106358408B
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- metal substrate
- groove
- protective layer
- method described
- communication apparatus
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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
- H05K5/04—Metal casings
Abstract
The present invention relates to communication apparatus metal shell field, a kind of communication apparatus metal shell and preparation method thereof is disclosed, the communication apparatus metal shell includes metal substrate, groove, oxidation film layer and the decorative layer of the covering metal substrate outer surface；The opening of the groove is located at the metal substrate inner surface；The oxidation film layer is located on the part metals ground of the recess region and in a thickness direction through the metal substrate.Communication apparatus metal shell provided by the invention is apparent clean and tidy smooth consistent, and metal-like is obvious.
Description
Technical field
The present invention relates to a kind of communication apparatus metal shells and preparation method thereof.
Background technique
Antenna for mobile phone is the equipment on mobile phone for receiving signal, and smart phone is mostly built-in antenna at present, this requires
Cell phone rear cover cannot play shielding action to signal.This problem is not present in plastic cellphone, for the hot topic-metal fuselage risen
How mobile phone solves the problems, such as that signal shielding is the key that one of its design and manufacture.
Currently, metallic mobile phone mostly uses Kaitian's wire casing and the method being molded solves the problems, such as that its airframe signal shields, such as HTC
The two strip antenna slot up and down of ONE, side antenna slot of iphone5/5s etc..The above-mentioned prior art in antenna slot by filling
Plastics carry out the shielding of anti-stop signal, but cause certain destruction to metallic mobile phone fuselage overall structure, and it is whole to affect its appearance
The cleaning and continuity of body.The visible plastic cement of shell destroys the bulk metal texture of fuselage simultaneously.
Summary of the invention
It is an object of the invention to overcome above-mentioned problems of the prior art, a kind of communication apparatus metal shell is provided
And preparation method thereof.Its antenna slot appearance of communication apparatus metal shell provided by the invention is invisible, and metal shell is apparently clean and tidy
It is smooth consistent, and metal-like is obvious.
To achieve the goals above, the present invention provides a kind of communication apparatus metal shell, wherein the communication apparatus metal
Shell includes metal substrate, groove, oxidation film layer and the decorative layer of the covering metal substrate outer surface；The groove is opened
Mouth is located at the metal substrate inner surface；The oxidation film layer is located on the part metals ground of the recess region and in thickness
Degree side extends upward through the metal substrate.
The present invention also provides a kind of preparation methods of communication apparatus metal shell, wherein method includes the following steps:
1) the step of surface other than groove forms the first protective layer is needed to form in metal substrate inner surface；
2) the step of metal substrate inner surface side forms groove；
3) inner surface after removal first protective layer in metal substrate forms the second protective layer, and in the groove
The step of forming the opening for running through second protective layer；
4) the step of hard anodizing processing being carried out to the metal substrate that step 3) obtains；
5) the step of removing second protective layer.
The communication apparatus metal shell obtained by means of the present invention has groove and positioned at the portion of the recess region
Divide the oxidation film layer for running through the metal substrate on metal substrate and in a thickness direction, the groove and oxidation film layer are for logical
News signal passes through, and realizes normal communication function.In turn, by filling groove, communication apparatus metal shell provided by the invention
Its antenna slot appearance is invisible, and oxidation film layer and decorative layer are integrally formed, and metal shell is apparent clean and tidy smooth consistent, and gold
It is obvious to belong to texture.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Figure 1A is the schematic diagram of the part of communication apparatus metal shell preparation process of the invention.
Figure 1B is the schematic diagram of another part of communication apparatus metal shell preparation process of the invention.
Description of symbols
1 metal substrate
2 coverings
3 first protective layers
4 grooves
5 second protective layers (UV ink layer)
6 openings
7 decorative layers (hard anodizing oxidation film layer)
8, filling member
9 oxidation film layers (hard anodizing oxidation film layer)
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
As shown in (i) in Figure 1B, the communication apparatus metal shell include metal substrate 1, groove 4, oxidation film layer 9 with
And the decorative layer 7 of covering 1 outer surface of metal substrate；The opening of the groove 4 is located at 1 inner surface of metal substrate；Institute
Oxidation film layer 9 is stated to be located on the part metals ground of the recess region and in a thickness direction through the metal substrate 1.
Although of the invention in addition, it is necessary to, it is noted that schematically illustrate only two grooves in (i) in 1B
Communication apparatus metal shell obviously can have a plurality of groove.
In the present invention, the communication apparatus for example can be with are as follows: mobile phone, tablet computer, laptop, bluetooth headset
Deng.Preferably, the communication apparatus metal shell is mobile phone metal shell.
In the present invention, when the inner surface of the metal shell is defined as being used in communication apparatus, metal shell court
To the surface inside communication apparatus.It is understood that when the outer surface of metal shell is defined as being used in communication apparatus,
Surface of the metal shell towards the external world.In addition, the surfaces externally and internally for being used to prepare the metal substrate of metal shell be also applied for it is above-mentioned
Definition.
In the present invention, the material of the metal substrate can for commonly used in the art for the various metals of communication apparatus,
It such as can be aluminium alloy, stainless steel, magnesium alloy or titanium alloy etc.；Preferably aluminium alloy.
There is no particular limitation for the thickness of the metal substrate, and those skilled in the art can be according to specific communication apparatus
Suitably selected.Such as the metal substrate with a thickness of 0.3-0.6mm, preferably 0.3-0.5mm, more preferably 0.3-
0.4mm。
In the present invention, the groove and oxidation film layer are used to guarantee that antenna and extraneous signal to transmit, and realize communication (i.e.
Antenna slot).
For above-mentioned groove, the depth of the groove can be 0.22-0.5mm, preferably 0.22-0.4mm, more preferably
0.22-0.3mm。
The width of above-mentioned groove can be 3-5mm, preferably 3-4mm.
The length of above-mentioned groove can be 10-100mm, preferably 10-60mm.
In addition, spacing between adjacent two grooves can be 2-5mm, preferably 2-3mm when groove is a plurality of.Separately
Outside, the numerical example of groove such as can be 1-200 item, preferably 5-50 item.
For above-mentioned oxidation film layer, the depth of the oxidation film can be 0.08-0.15mm, preferably 0.08-0.12mm, more
Preferably 0.08-0.1mm.
The width of above-mentioned oxidation film layer can be 80-120 μm, preferably 90-110 μm.
The length of above-mentioned oxidation film layer is can be with 10-100mm, preferably 10-60mm；It is the more preferable groove and described
The length of oxidation film layer is identical.
According to the present invention, the communication apparatus metal shell also has the decorative layer positioned at metal substrate outer surface, described
Decorative layer covers the outer surface of the metal substrate, namely the covering groove and oxidation film layer.
According to the present invention, to the thickness of the decorative layer, there is no particular limitation, can be the general thickness of this field.Example
If the thickness of the decorative layer can be 40-90 μm, preferably 50-80 μm.
Preferably, the decorative layer and the oxidation film layer are integrally formed.
It is highly preferred that the decorative layer and the oxidation film layer are hard anodizing oxidation film layer.
That is, in the present invention, particularly preferably forming the oxidation film layer and decorative layer by hard anodizing.
In the case where, according to the invention it is preferred to, the communication apparatus metal shell further includes filling member, the filling member position
In the groove.More preferably.The filling member in the slit by filling glue and being solidified to form.
Preferably, the glue is UV glue.For example, it is purchased from the UV glue of 3211 models of Le Tai company.
The present invention also provides the preparation methods of above-mentioned communication apparatus metal shell, wherein method includes the following steps:
1) the step of surface other than groove forms the first protective layer is needed to form in metal substrate inner surface；
2) the step of metal substrate inner surface side forms groove；
3) inner surface after removal first protective layer in metal substrate forms the second protective layer, and in the groove
The step of forming the opening for running through second protective layer；
4) the step of hard anodizing processing being carried out to the metal substrate that step 3) obtains；
5) the step of removing second protective layer.
Above-mentioned steps of the invention are described in detail respectively below.
Step 1): the step of surface other than groove forms the first protective layer is needed to form in metal substrate inner surface
It is preferred that the step of surface other than groove forms the first protective layer is needed to form in metal substrate inner surface are as follows: masking
Metal substrate inner surface needs to form the part of groove, and the region other than the shaded portions of metal substrate forms protection
Layer.
The purpose of step 1) is: covering the part for needing to form groove on metal substrate inner surface, prevents at this
Shaded areas forms protective layer, and thus, it is possible to guarantee only to be etched the part of masking in step 2).
In the present invention, the width of the groove can be 3-5mm, preferably 3-4mm.
The depth of the groove can be 0.22-0.5mm, preferably 0.22-0.4mm, more preferably 0.22-0.3mm.Institute
The depth for stating groove can be realized by aftermentioned etching.
It in addition, there is no particular limitation for the item number of groove, such as can be 1-200 item, preferably 5-50 item.When described recessed
When slot is a plurality of, the spacing between adjacent two grooves can be 2-5mm, preferably 2-3mm.
It according to the present invention, can as the method for covering the part for needing to form groove on metal substrate inner surface
To use the conventional method of this field, such as the part insulating cement of groove can will be needed to form on metal substrate inner surface
Region after band is puted up, then other than the shaded portions of metal substrate forms first protective layer.
Above-mentioned insulating tape for example can be the insulating tape for being purchased from Xi Mengte Electronics Co., Ltd., Shenzhen.
As the method for forming above-mentioned first protective layer, it can adopt and form the protection with the conventional methods in the field
Layer.In the present invention, it is preferred to form the protective layer by electrophoresis and/or spraying.
Condition as the electrophoresis may include: that temperature is 29-31 DEG C, electrophoretic voltage 120-140V, pH 7-9,
Time is 1-3min.In addition, the electrophoresis liquid can be clear for the dumb light paint (WNO-1) containing Japanese clear water Co., Ltd. and Japan
The electrophoresis liquid of the polish lacquer (NNO-4) of Water Co., Ltd, wherein the dumb light paint (WNO-1) of Japanese clear water Co., Ltd. and Japan
The weight ratio of the polish lacquer (NNO-4) of clear water Co., Ltd. can be 0-4:1, preferably 7:3.In addition, the solid content of electrophoresis liquid
It can be 8-15 weight %, preferably 13 weight %.
The protective layer is formed by spraying, the method for the spraying can be in method known in the field, such as sprays
Three paintings, including priming paint (16-20 μm), middle paint (16-25 μ n) and finishing coat (18-26 μm) can be divided into.
By protective layer obtained by the above method with a thickness of 35-45 μm, preferably 30-40 μm.
Step 2): in the step of metal substrate inner surface side forms groove
It is preferred in the step of metal substrate inner surface side forms groove are as follows: to expose the shielded area of metal substrate inner surface
Domain, and the region is etched, to form the groove.
Preferably, etching so that the metal substrate in the region with a thickness of 0.08-0.15mm, it is highly preferred that etching so that
The metal substrate in the region with a thickness of 0.08-0.12mm, it is further preferred that etching so that the metal substrate in the region thickness
Degree is 0.08-0.1mm.
In the present invention, it is preferred to which etching solution is to contain 50-60g/L sodium hydroxide, 50-60g/L sodium carbonate and 50-60g/
The solution of L sodium nitrate.In addition, the temperature and time of etching is so that the metal substrate of shaded areas is with a thickness of above range
Standard, but it is 35-45 DEG C that the condition of the usually etching, which includes: temperature, and the time is 30-70 minutes.
Step 3 :) inner surface after removal first protective layer in metal substrate forms the second protective layer, and described
The step of opening for running through second protective layer is formed in groove
In the present invention, second protective layer is preferably UV ink layer.
In the present invention, step 3) is preferred are as follows: removes first protective layer on metal substrate surface, and the table in metal substrate
Face forms UV ink layer, and then exposure development goes out 80-120 μm wide of groove body in the groove.
In this step, the first protective layer that first remove metal substrate surface, as removing the of metal substrate surface
The method of one protective layer can use various methods commonly used in the art, such as can be removed using the method that paint stripper impregnates
First protective layer.The paint stripper for example can be the SH-665 for being purchased from four brightness of Dongguan City surface treatment Science and Technology Ltd.
The paint stripper of model.The time of the immersion is usually 10-20min.
After the first protective layer for removing metal substrate surface, UV ink layer is formed in metal substrate inner surface.In metal
The method that ground inner surface forms UV ink layer can use various method and conditions commonly used in the art, such as can be located at
It is toasted 20-30 minutes at 70-90 DEG C after spraying UV ink on the metal substrate inner surface.
It can be for example UV ink for 5680 as above-mentioned UV ink.
In the present invention, there is no particular limitation for the thickness of the ink layer formed by the above method, can be this field
General thickness, such as the thickness can be 10-30 μm, preferably 10-20 μm.
After forming the UV ink layer, exposure development goes out 80-120 μm wide of groove body in the groove.Preferably, exist
Exposure development goes out 90-110 μm wide of groove body in the groove.The condition of the exposure development can use known in the field
Condition, such as can be time 1-4min, luminous intensity 700-900mJ/cm2, preferably time 2min, luminous intensity 800mJ/
cm2。
Step 4): the step of hard anodizing processing is carried out to the metal substrate that step 3) obtains
According to the present invention, the hard anodizing processing includes that the metal substrate obtained to step 3) carries out hard anode
The step of aoxidizing pre-treatment, the pre-treatment include alkaline etching liquid etching, nitric acid ash disposal and chemical polishing processing.
The method of the pre-treatment preferably uses following steps to carry out:
(1) at 50-70 DEG C, metal substrate is subjected to alkaline etching 1-2min in Alkaline etchant, then cleans 2 with deionized water
It is secondary；
(2) at 10-35 DEG C, light 3-5min is gone out in light-emitting solution, is then cleaned 2 times with deionized water；
(3) at 10-35 DEG C, 10-30s is polished changing to throw in liquid, is then cleaned 2 times with deionized water.
Above-mentioned Alkaline etchant is preferably 15-20g/L sodium hydrate aqueous solution；Above-mentioned light-emitting solution is preferably 200-300ml/L nitre
Aqueous acid；It is preferably the aqueous solution containing 650-750ml/L phosphoric acid and 350-250ml/L sulfuric acid that describedization, which throws liquid,.
In addition, the actual conditions of hard anodizing processing can be well known in the art various conditions.It is preferred that
Ground, the condition of hard anodizing processing include: that oxidation solution is molten containing 170-270g/L sulfuric acid and 8-20g/L oxalic acid
Liquid, temperature are 5-12 DEG C, and pulse wave is positive square-wave pulse, duty ratio 60-80%, frequency 500-1000Hz, and electric current is close
Degree is 3-7A/dm2, oxidization time 30-60min.
In the present invention, UV ink layer 3) is formed on metal substrate inner surface through the above steps, and is had
80-120 μm wide of the groove body that exposure development goes out in the groove.Therefore, when carrying out hard anodizing processing in this step,
Can do not formed at groove body that exposure development in the outer surface for the metal substrate that UV ink layer is protected and the groove goes out it is hard
Matter anode oxidation membrane passes through for communication signal from there through the groove and oxidation film layer, realizes normal communication function.
Step 5): the step of removing second protective layer
In this step, the second protective layer (namely UV of removal hard anodizing treated metal substrate inner surface
Ink layer) method can use various methods commonly used in the art, such as can using paint stripper immersion method come
Remove second sheath.The paint stripper for example can be the SH- for being purchased from four brightness of Dongguan City surface treatment Science and Technology Ltd.
The paint stripper of 665 models.The time of the immersion is usually 10-20min.
In the case where, according to the invention it is preferred to, this method further includes that UV glue and cured step are filled in the groove
Suddenly.
The UV glue can be various UV glue commonly used in the art, and the UV glue is, for example, the Le Tai company that is purchased from
The UV glue of 3211 models.In addition, the curing method of the UV glue can be carried out using conventional method in that art, such as solidify
Time can be 3-8min, luminous intensity 700-900mJ/cm2Gu preferably, changing the time can be 5min, luminous intensity is
800mJ/cm2。
A kind of particularly preferred embodiment according to the present invention, as shown in FIG. 1A and 1B, communication apparatus of the invention
The preparation method of metal shell the following steps are included:
(1) as shown in (a) in Figure 1A, 1 inner surface of metal substrate is covered with covering (preferably insulating tape) 2 and is needed
Form the part of groove 4；
(2) as shown in (b) in Figure 1A, 1 inner surface of metal substrate is covered in covering 2 and needs to form 4 region of groove
Under the conditions of, the region other than the shaded portions of metal substrate 1 forms the first protective layer (preferably electrophoretic paint layer) 3；
(3) as shown in (c) and (d) in Figure 1A, the shaded areas of 1 inner surface of metal substrate is exposed, and to the region
It is etched to form the groove 4；
(4) as shown in (f) in (e) and Figure 1B in Figure 1A, first protective layer 3 on 1 surface of metal substrate is removed, and in gold
Belong to ground inner surface and forms the second protective layer (UV ink layer) 5；
(5) as shown in (g) in Figure 1B, exposure development goes out 80-120 μm wide of opening 6 in the groove 4；
(6) as shown in (h) in Figure 1B, hard anodizing processing is carried out to the metal substrate that step 3) obtains, forms oxygen
Change film layer 9 and decorative layer 7, and the hard anodizing oxidation film layer that oxidation film layer 9 and decorative layer 7 are formed as one；
(7) as shown in (i) in Figure 1B and (j), the UV oil of removal hard anodizing treated 1 inner surface of metal substrate
Layer of ink 5, and fill UV glue in groove 4 and solidify, form filling member 8.
The present invention will be described in detail by way of examples below.But the present invention is not limited in following embodiments.
Embodiment 1
1) aluminium alloy (is purchased from Dongguan City port ancient sacrificial bronze ware and belongs to company, Materials Co., Ltd, the trade mark 6063, with a thickness of 0.4mm)
The size of 15mmx80mm is cut into as metal substrate.Insulation is puted up in the part that metal substrate inner surface needs to form groove
Adhesive tape (is purchased from Xi Mengte Electronics Co., Ltd., Shenzhen, same as below), wherein pastes insulating tape 2, the width of insulating tape
Degree is 3mm, length 75mm, and the spacing between adjacent insulating tape is 3mm.
Protective layer is formed by the method for electrophoresis, wherein the condition of electrophoresis are as follows: temperature is 30 DEG C, voltage 160V, the time
For 2min, PH 7.8；Electrophoresis liquid are as follows: the dumb light paint (WNO-1) of Japanese clear water Co., Ltd.: Japanese clear water Co., Ltd. it is bright
Lac varnish (NNO-4)=7:3 (weight ratio, the solid content of electrophoresis liquid are 13 weight %), obtains 35 μm of protective layer.
2) insulating tape is removed, and the insulating tape shaded areas is etched, obtains groove, the gold of the recess region
Belong to ground with a thickness of 0.08mm or so.Wherein, the etching solution used for containing 50g/L sodium hydroxide, 50g/L sodium carbonate and
The solution of 50g/L sodium nitrate, the condition of etching are as follows: temperature is 40 DEG C, and the time is 54 minutes.
3) protective layer on metal substrate surface is removed by the method impregnated with paint stripper (paint stripper is Dongguan City four
Brightness is surface-treated the paint stripper of the SH-665 model of Science and Technology Ltd., and soaking time is 15 minutes), then, in metal substrate
Inner surface spraying 5680 be after UV ink (being purchased from Shenzhen Wan Jiayuan to refine Science and Technology Co., Ltd., same as below) at 80 DEG C
Baking 25 minutes (the UV ink layer of formation with a thickness of 15 μm), then, carry out uv-exposure (conditions of exposure is time 2min,
Ultraviolet ray intensity is 800mJ/cm2), exposure development goes out 80 μm of wide groove bodies in above-mentioned groove.
4) at 50 DEG C, the metal substrate that step 3) is obtained carries out in Alkaline etchant (55g/L sodium hydrate aqueous solution)
Alkaline etching 2min, then deionized water is cleaned 2 times；Then, at 25 DEG C, light is gone out in light-emitting solution (25ml/L aqueous solution of nitric acid)
Then 4min is cleaned 2 times with deionized water；Then, at 25 DEG C, liquid is thrown (to contain 750ml/L phosphoric acid and 250ml/L changing
The aqueous solution of sulfuric acid) in polish 20s, then cleaned 2 times with deionized water；Later in 80 DEG C of drying 20min, cleaning, drying is obtained
Metal substrate afterwards.
Metal substrate after drying is subjected to hard anodizing processing.Hard anodizing electrolyte is to contain sulfuric acid
The solution of 190g/L and oxalic acid 10g/L, condition are as follows: pulse wave is positive square-wave pulse, duty ratio 80%, and frequency is
800Hz, current density 5A/dm2, temperature is 8 DEG C, time 50min.
5) hard anodizing is removed treated the UV oil of metal substrate inner surface by the method impregnated with paint stripper
(paint stripper is the paint stripper for the SH-665 model that four brightness of Dongguan City is surface-treated Science and Technology Ltd., soaking time 15 to layer of ink
Minute), then, ultraviolet after filling glue (the UV glue for being purchased from 3211 models of Le Tai company) in the groove of metal substrate
Luminous intensity is 800mJ/cm2Under conditions of solidified, thus obtain communication apparatus metal shell.
As shown in (j) in Figure 1B, the above-mentioned communication apparatus metal shell being prepared include metal substrate 1, groove 4,
The decorative layer (horniness anode oxide film layer) 7 of oxidation film layer 9, filling member 8 and covering 1 outer surface of metal substrate；It is described recessed
The opening of slot 4 is located at 1 inner surface of metal substrate；The oxidation film layer (horniness anode oxide film layer) 9 is located at the groove
Run through the metal substrate 1 on the part metals ground in region and in a thickness direction, and with the decorative layer (hard anode
Oxidation film layer) it is 7 integrally formed, the filling member 8 fills the groove 4.The communication apparatus metal shell its antenna slot appearance is not
As it can be seen that the oxidation film layer and surface decoration layer are integrally formed, metal shell is apparent clean and tidy smooth consistent, and metal-like
Obviously.
Embodiment 2
1) aluminium alloy (is purchased from Dongguan City port ancient sacrificial bronze ware and belongs to company, Materials Co., Ltd, the trade mark 6063, with a thickness of 0.4mm)
The size of 15mmx80mm is cut into as metal substrate.Insulation is puted up in the part that metal substrate inner surface needs to form groove
Adhesive tape, wherein paste insulating tape 2, the width of insulating tape is 4mm, length 75mm, between adjacent insulating tape
Spacing is 3mm.
Protective layer is formed by the method for electrophoresis, wherein the condition of electrophoresis are as follows: temperature is 30 DEG C, voltage 160V, the time
For 2min, PH 7.8；Electrophoresis liquid are as follows: the dumb light paint (WNO-1) of Japanese clear water Co., Ltd.: Japanese clear water Co., Ltd. it is bright
Lac varnish (NNO-4)=7:3 (weight ratio, the solid content of electrophoresis liquid are 13 weight %), obtains 35 μm of protective layer.
2) insulating tape is removed, and the insulating tape shaded areas is etched, obtains groove, the gold of the recess region
Belong to ground with a thickness of 0.1mm or so.Wherein, the etching solution used for containing 50g/L sodium hydroxide, 50g/L sodium carbonate and
The solution of 50g/L sodium nitrate, the condition of etching are as follows: temperature is 40 DEG C, and the time is 51 minutes.
3) protective layer on metal substrate surface is removed by the method impregnated with paint stripper (paint stripper is Dongguan City four
Brightness is surface-treated the paint stripper of the SH-665 model of Science and Technology Ltd., and soaking time is 15 minutes) then, in metal substrate
Surface spraying 5680 is to toast 25 minutes (the UV ink layer of formation with a thickness of 15 μm) after UV ink at 80 DEG C, then, into
(conditions of exposure is time 2min, ultraviolet ray intensity 800mJ/cm to row uv-exposure2), exposure development goes out in above-mentioned groove
100 μm of wide groove bodies.
4) at 50 DEG C, the metal substrate that step 3) is obtained carries out in Alkaline etchant (55g/L sodium hydrate aqueous solution)
Alkaline etching 2min, then deionized water is cleaned 2 times；Then, at 25 DEG C, light is gone out in light-emitting solution (25ml/L aqueous solution of nitric acid)
Then 4min is cleaned 2 times with deionized water；Then, at 25 DEG C, liquid is thrown (to contain 750ml/L phosphoric acid and 250ml/L changing
The aqueous solution of sulfuric acid) in polish 20s, then cleaned 2 times with deionized water；Later in 80 DEG C of drying 20min, cleaning, drying is obtained
Metal substrate afterwards.
Metal substrate after drying is subjected to hard anodizing processing.Hard anodizing electrolyte is to contain sulfuric acid
The solution of 190g/L and oxalic acid 10g/L, condition are as follows: pulse wave is positive square-wave pulse, duty ratio 80%, and frequency is
800Hz, current density 5.5A/dm2, temperature is 8 DEG C, time 50min.
5) hard anodizing is removed treated the UV oil of metal substrate inner surface by the method impregnated with paint stripper
(paint stripper is the paint stripper for the SH-665 model that four brightness of Dongguan City is surface-treated Science and Technology Ltd., soaking time 15 to layer of ink
Minute), then, ultraviolet after filling glue (the UV glue for being purchased from 3211 models of Le Tai company) in the groove of metal substrate
Luminous intensity is 800mJ/cm2Under conditions of solidified, thus obtain communication apparatus metal shell.
As shown in (j) in Figure 1B, the above-mentioned communication apparatus metal shell being prepared include metal substrate 1, groove 4,
The decorative layer (horniness anode oxide film layer) 7 of oxidation film layer 9, filling member 8 and covering 1 outer surface of metal substrate；It is described recessed
The opening of slot 4 is located at 1 inner surface of metal substrate；The oxidation film layer (horniness anode oxide film layer) 9 is located at the groove
Run through the metal substrate 1 on the part metals ground in region and in a thickness direction, and with the decorative layer (hard anode
Oxidation film layer) it is 7 integrally formed, the filling member 8 fills the groove 4.The communication apparatus metal shell its antenna slot appearance is not
As it can be seen that the oxidation film layer and surface decoration layer are integrally formed, metal shell is apparent clean and tidy smooth consistent, and metal-like
Obviously.
Embodiment 3
1) aluminium alloy (is purchased from Dongguan City port ancient sacrificial bronze ware and belongs to company, Materials Co., Ltd, the trade mark 6063, with a thickness of 0.4mm)
The size of 15mmx80mm is cut into as metal substrate.Insulation is puted up in the part that metal substrate inner surface needs to form groove
Adhesive tape (is purchased from Xi Mengte company), wherein pastes insulating tape 2, the width of insulating tape is 5mm, length 75mm, adjacent
Insulating tape between spacing be 3mm.
Protective layer is formed by the method for electrophoresis, wherein the condition of electrophoresis are as follows: temperature is 30 DEG C, voltage 160V, the time
For 2min, PH 7.8；Electrophoresis liquid are as follows: the dumb light paint (WNO-1) of Japanese clear water Co., Ltd.: Japanese clear water Co., Ltd. it is bright
Lac varnish (NNO-4)=7:3 (weight ratio, the solid content of electrophoresis liquid are 13 weight %), obtains 35 μm of protective layer.
2) insulating tape is removed, and the insulating tape shaded areas is etched, obtains groove, the gold of the recess region
Belong to ground with a thickness of 0.12um or so.Wherein, the etching solution used for containing 50g/L sodium hydroxide, 50g/L sodium carbonate and
The solution of 50g/L sodium nitrate, the condition of etching are as follows: temperature is 40 DEG C, and the time is 51 minutes.
3) protective layer on metal substrate surface is removed by the method impregnated with paint stripper (paint stripper is four brightness table of Dongguan City
The paint stripper of the SH-665 model of surface treatment Science and Technology Ltd., soaking time are 15 minutes), then, the table in metal substrate
Face spraying 5680 is to toast 25 minutes (the UV ink layer of formation with a thickness of 0.015mm) after UV ink at 80 DEG C, then, into
(conditions of exposure is time 2min, ultraviolet ray intensity 800mJ/cm to row uv-exposure2), exposure development goes out in above-mentioned groove
120 μm of wide groove bodies.
4) at 50 DEG C, the metal substrate that step 3) is obtained carries out in Alkaline etchant (55g/L sodium hydrate aqueous solution)
Alkaline etching 2min, then deionized water is cleaned 2 times；Then, at 25 DEG C, light is gone out in light-emitting solution (25ml/L aqueous solution of nitric acid)
Then 4min is cleaned 2 times with deionized water；Then, at 25 DEG C, liquid is thrown (for 750ml/L phosphoric acid and 250ml/L sulfuric acid changing
Aqueous solution) in polish 20s, then cleaned 2 times with deionized water；Later in 80 DEG C of drying 20min, after obtaining cleaning, drying
Metal substrate.
Metal substrate after drying is subjected to hard anodizing processing.Hard anodizing electrolyte is to contain sulfuric acid
The solution of 190g/L and oxalic acid 10g/L, condition are as follows: pulse wave is positive square-wave pulse, duty ratio 80%, and frequency is
800Hz, current density 6A/dm2, temperature is 8 DEG C, time 50min.
5) hard anodizing is removed treated the UV oil of metal substrate inner surface by the method impregnated with paint stripper
Layer of ink (paint stripper is the SH-665 paint stripper that four brightness of Dongguan City is surface-treated Science and Technology Ltd., and soaking time is 15 minutes),
Then, in the groove of metal substrate fill glue (the UV glue for being purchased from 3211 models of Le Tai company) after in ultraviolet ray intensity
For 800mJ/cm2Under conditions of solidified, thus obtain communication apparatus metal shell.
As shown in (j) in Figure 1B, the above-mentioned communication apparatus metal shell being prepared include metal substrate 1, groove 4,
The decorative layer (horniness anode oxide film layer) 7 of oxidation film layer 9, filling member 8 and covering 1 outer surface of metal substrate；It is described recessed
The opening of slot 4 is located at 1 inner surface of metal substrate；The oxidation film layer (horniness anode oxide film layer) 9 is located at the groove
Run through the metal substrate 1 on the part metals ground in region and in a thickness direction, and with the decorative layer (hard anode
Oxidation film layer) it is 7 integrally formed, the filling member 8 fills the groove 4.The communication apparatus metal shell its antenna slot appearance is not
As it can be seen that the oxidation film layer and surface decoration layer are integrally formed, metal shell is apparent clean and tidy smooth consistent, and metal-like
Obviously.
Embodiment 4
It is carried out in the way of embodiment 1, the difference is that pasting insulating tape 2, the width of insulating tape is 5mm, length
Degree is 80mm, and the spacing between adjacent insulating tape is 3mm, gets similarly communication apparatus metal shell.
As shown in (j) in Figure 1B, the above-mentioned communication apparatus metal shell being prepared include metal substrate 1, groove 4,
The decorative layer (horniness anode oxide film layer) 7 of oxidation film layer 9, filling member 8 and covering 1 outer surface of metal substrate；It is described recessed
The opening of slot 4 is located at 1 inner surface of metal substrate；The oxidation film layer (horniness anode oxide film layer) 9 is located at the groove
Run through the metal substrate 1 on the part metals ground in region and in a thickness direction, and with the decorative layer (hard anode
Oxidation film layer) it is 7 integrally formed, the filling member 8 fills the groove 4.The communication apparatus metal shell its antenna slot appearance is not
As it can be seen that the oxidation film layer and surface decoration layer are integrally formed, metal shell is apparent clean and tidy smooth consistent, and metal-like
Obviously.
Embodiment 5
It is carried out in the way of embodiment 1, the difference is that pasting insulating tape 2, the width of insulating tape is 3mm, length
Degree is 60mm, and the spacing between adjacent insulating tape is 2mm, gets similarly communication apparatus metal shell.
As shown in (j) in Figure 1B, the above-mentioned communication apparatus metal shell being prepared include metal substrate 1, groove 4,
The decorative layer (horniness anode oxide film layer) 7 of oxidation film layer 9, filling member 8 and covering 1 outer surface of metal substrate；It is described recessed
The opening of slot 4 is located at 1 inner surface of metal substrate；The oxidation film layer (horniness anode oxide film layer) 9 is located at the groove
Run through the metal substrate 1 on the part metals ground in region and in a thickness direction, and with the decorative layer (hard anode
Oxidation film layer) it is 7 integrally formed, the filling member 8 fills the groove 4.The communication apparatus metal shell its antenna slot appearance is not
As it can be seen that the oxidation film layer and surface decoration layer are integrally formed, metal shell is apparent clean and tidy smooth consistent, and metal-like
Obviously.
Embodiment 6
It is carried out in the way of embodiment 1, the difference is that pasting insulating tape 2, the width of insulating tape is 3mm, length
Degree is 40mm, and the spacing between adjacent insulating tape is 2mm, gets similarly communication apparatus metal shell.
As shown in (j) in Figure 1B, the above-mentioned communication apparatus metal shell being prepared include metal substrate 1, groove 4,
The decorative layer (horniness anode oxide film layer) 7 of oxidation film layer 9, filling member 8 and covering 1 outer surface of metal substrate；It is described recessed
The opening of slot 4 is located at 1 inner surface of metal substrate；The oxidation film layer (horniness anode oxide film layer) 9 is located at the groove
Run through the metal substrate 1 on the part metals ground in region and in a thickness direction, and with the decorative layer (hard anode
Oxidation film layer) it is 7 integrally formed, the filling member 8 fills the groove 4.The communication apparatus metal shell its antenna slot appearance is not
As it can be seen that the oxidation film layer and surface decoration layer are integrally formed, metal shell is apparent clean and tidy smooth consistent, and metal-like
Obviously.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (18)
1. a kind of preparation method of communication apparatus metal shell, which is characterized in that method includes the following steps:
1) the step of surface other than groove forms the first protective layer is needed to form in metal substrate inner surface；
2) the step of metal substrate inner surface side forms groove；
3) inner surface after removal first protective layer in metal substrate forms the second protective layer, and is formed in the groove
The step of through the opening of second protective layer；
4) the step of hard anodizing processing being carried out to the metal substrate that step 3) obtains；
5) the step of removing second protective layer.
2. according to the method described in claim 1, wherein, in step 1), being needed to form by masking metal substrate inner surface recessed
The part of slot, and the region other than the shaded portions of metal substrate forms the first protective layer.
3. according to the method described in claim 1, wherein, the width of the groove is 3-5mm.
4. according to the method described in claim 1, wherein, the length of the groove is 10-100mm.
5. the spacing according to the method described in claim 4, wherein, when the groove is a plurality of, between adjacent two grooves
2-5mm。
6. method according to claim 1 or 2, wherein form first protective layer by electrophoresis and/or spraying.
7. according to the method described in claim 6, wherein, first protective layer with a thickness of 25-45 μm.
8. according to the method described in claim 1, wherein, in step 2), by the shielded area for exposing metal substrate inner surface
Domain, and the region is etched to form the groove.
9. according to the method described in claim 8, wherein, by the etching so that the metal substrate in the region with a thickness of
0.08-0.15mm。
10. according to the method described in claim 9, wherein, etching solution is to contain 50-60g/L sodium hydroxide, 50-60g/L carbonic acid
The solution of sodium and 50-60g/L sodium nitrate.
11. the condition of the etching includes: that temperature is 35-45 DEG C according to the method described in claim 10, wherein, the time is
30-70 minutes.
12. according to the method described in claim 1, wherein, the inner surface shape after first protective layer in metal substrate is removed
At the second protective layer, and the step of forming the opening for running through second protective layer in the groove are as follows: remove metal substrate
First protective layer on surface, and UV ink layer is formed in metal substrate inner surface, then exposure development goes out 80- in the groove
120 μm of wide groove bodies.
13. according to the method described in claim 1, wherein, in step 4), the hard anodizing processing includes to step 3)
Obtained metal substrate carries out the step of hard anodizing pre-treatment, and the pre-treatment includes alkaline etching liquid etching, nitre
Sour ash disposal and chemical polishing processing.
14. according to claim 1 or method described in 13, wherein in step 4), the condition packet of the hard anodizing processing
Include: oxidation solution is the solution containing 170-270g/L sulfuric acid and 8-20g/L oxalic acid, and temperature is 5-12 DEG C, and pulse wave is forward direction
Square-wave pulse, duty ratio 60-80%, frequency 500-1000Hz, current density 3-7A/dm2, oxidization time 30-
60min。
15. according to the method described in claim 1, wherein, this method further includes filling UV glue in the groove and solidifying
The step of.
16. according to the method described in claim 1, wherein, the metal substrate is that aluminium alloy, stainless steel, magnesium alloy or titanium close
Gold.
17. according to the method for claim 16, wherein the metal substrate with a thickness of 0.3-0.6mm.
18. according to the method described in claim 1, wherein, the communication apparatus metal shell is mobile phone metal shell.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510416025.4A CN106358408B (en) | 2015-07-15 | 2015-07-15 | A kind of communication apparatus metal shell and preparation method thereof |
| PCT/CN2015/098293 WO2017008444A1 (en) | 2015-07-15 | 2015-12-22 | Communication device metal housing and manufacturing method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510416025.4A CN106358408B (en) | 2015-07-15 | 2015-07-15 | A kind of communication apparatus metal shell and preparation method thereof |
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| CN106358408B true CN106358408B (en) | 2019-06-21 |
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| WO (1) | WO2017008444A1 (en) |
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| CN110519950A (en) * | 2019-08-30 | 2019-11-29 | Oppo广东移动通信有限公司 | Sheet metal and preparation method, shell and electronic equipment |
| CN110708926B (en) * | 2019-09-06 | 2021-05-18 | 华为技术有限公司 | Preparation method of shell, shell and electronic equipment |
| CN113132887B (en) * | 2021-04-20 | 2022-07-22 | 东莞舒铂迈特精工实业有限公司 | Metal ring processing technology of vibrating diaphragm assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873775A (en) * | 2009-04-27 | 2010-10-27 | 深圳富泰宏精密工业有限公司 | Shell having knitted patterns and manufacturing method thereof |
| CN103096650A (en) * | 2011-10-31 | 2013-05-08 | 深圳富泰宏精密工业有限公司 | Electronic device shell and manufacture method thereof |
| CN104735942A (en) * | 2013-12-20 | 2015-06-24 | 惠州比亚迪电子有限公司 | Communication equipment metal shell and manufacturing method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006003783U1 (en) * | 2006-03-08 | 2006-06-22 | Interflex Datensysteme Gmbh & Co. Kg | Vandalism protected terminal for use at e.g. stadium entrance, has shatter-proof panel arranged in metal housing and made of electrically non conductive, impact resistant, hardly inflammable and chemical resistant plastic |
| TWM323183U (en) * | 2006-12-28 | 2007-12-01 | Hocheng Corp | Notebook computer housing with enamelled metal structure |
| CN102227036A (en) * | 2011-03-18 | 2011-10-26 | 深圳桑菲消费通信有限公司 | Antenna system of mobile phone with metal shell |
| CN202178799U (en) * | 2011-07-22 | 2012-03-28 | 惠州Tcl移动通信有限公司 | Housing of mobile terminal having metal effect |
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2015
- 2015-07-15 CN CN201510416025.4A patent/CN106358408B/en active Active
- 2015-12-22 WO PCT/CN2015/098293 patent/WO2017008444A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873775A (en) * | 2009-04-27 | 2010-10-27 | 深圳富泰宏精密工业有限公司 | Shell having knitted patterns and manufacturing method thereof |
| CN103096650A (en) * | 2011-10-31 | 2013-05-08 | 深圳富泰宏精密工业有限公司 | Electronic device shell and manufacture method thereof |
| CN104735942A (en) * | 2013-12-20 | 2015-06-24 | 惠州比亚迪电子有限公司 | Communication equipment metal shell and manufacturing method thereof |
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| WO2017008444A1 (en) | 2017-01-19 |
| CN106358408A (en) | 2017-01-25 |
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