CN102806516A - Metal casing and manufacturing method thereof - Google Patents
Metal casing and manufacturing method thereof Download PDFInfo
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- CN102806516A CN102806516A CN2011101424407A CN201110142440A CN102806516A CN 102806516 A CN102806516 A CN 102806516A CN 2011101424407 A CN2011101424407 A CN 2011101424407A CN 201110142440 A CN201110142440 A CN 201110142440A CN 102806516 A CN102806516 A CN 102806516A
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- metal shell
- preparation
- rete
- metal
- metal base
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 78
- 239000002184 metal Substances 0.000 title claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000000227 grinding Methods 0.000 claims abstract description 40
- 239000003082 abrasive agent Substances 0.000 claims abstract description 24
- 238000005240 physical vapour deposition Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000003801 milling Methods 0.000 claims description 22
- 238000002360 preparation method Methods 0.000 claims description 21
- 239000004575 stone Substances 0.000 claims description 17
- 239000012459 cleaning agent Substances 0.000 claims description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims description 11
- 239000012752 auxiliary agent Substances 0.000 claims description 11
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- SJKRCWUQJZIWQB-UHFFFAOYSA-N azane;chromium Chemical compound N.[Cr] SJKRCWUQJZIWQB-UHFFFAOYSA-N 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 229910021324 titanium aluminide Inorganic materials 0.000 claims description 3
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 229910003470 tongbaite Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 18
- 239000000463 material Substances 0.000 abstract description 10
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000007733 ion plating Methods 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention provides a manufacturing method of a metal casing. The manufacturing method includes steps of firstly, placing a metal base material in a grinding device, adding abrasives and water into the grinding device, vibrating the grinding device or the metal base material so as to form ground texture on surfaces of the metal base material; and secondly, treating the ground texture by means of physical vapor deposition or anodic oxidation so as to form a film layer on the ground texture. The invention further provides the metal casing which is manufactured by the method and comprises a metal base and a film layer. The ground texture is distributed on the surfaces of the metal base, and the film layer covers the ground texture. Since the surfaces of the metal casing are provided with the ground texture and the ground texture is covered with the film layer, the metal casing has the ground antique metal texture and has good wear resistance and corrosion resistance.
Description
Technical field
The present invention relates to field of surface treatment, relate in particular to a kind of metal shell and preparation method thereof.
Background technology
Along with improving constantly and electronic product of living standard, for example: the sustainable development of mobile phone technique, people are to electronic product, for example: the appearance requirement of mobile phone is also increasingly high.At present, more and more to the process for treating surface of electronic product metal shell, purpose is in order to make electronic product have unique texture and color and luster.In the prior art; Can make electronic product present high light quality sense, wire drawing texture, sandblast texture etc. through technologies such as polishing, wire drawing, sandblasts; And through comprising the colorize method of plating, spraying, anodic oxidation, PVD (physical vapour deposition (PVD)), electrophoresis etc.; Make electronic product when having certain texture, have various color and lusters, to win liking of different consumers.
In above-mentioned colorize method; PVD (physical vapour deposition (PVD)) and anodic oxidation are good film plating process; The metal-like of the rete that on base material, prepares is strong; Good with the adhesion of base material, wearability and fine corrosion resistance can satisfy electronic product and have gorgeous metal coating effect simultaneously in that color is multifarious.Yet; The very thin thickness of the rete that physical vapour deposition (PVD) and anodic oxidation form is merely several microns to tens microns, and the effect of rete receives the influence of base material; After PVD or the anodized; The surface effect of housing largely depends on the texture of housing itself, and is ornamental comparatively single, is difficult to satisfy the harsh day by day esthetic requirement of consumer.
Summary of the invention
The surface effect that the present invention is intended to solve the metal shell that the preparation method of metal shell of the prior art makes largely depends on the texture of housing itself, ornamental comparatively single technical problem.
The invention discloses a kind of preparation method of metal shell, comprise the steps:
Step 1, metal base is positioned in the milling apparatus, in milling apparatus, adds abrasive material and water, on milling apparatus or metal base, apply vibration then, make the surface of metal base form mill decorative pattern reason;
Step 2, on said mill decorative pattern reason, form rete through physical vapour deposition (PVD) or anodized.
In the preparation method of metal shell of the present invention, the weight ratio of said abrasive material and auxiliary agent is 10-30:1.
In the preparation method of metal shell of the present invention, said auxiliary agent comprises water and cleaning agent, and the weight ratio of said cleaning agent and water is 1:30-60.
In the preparation method of metal shell of the present invention, in step 1, in milling apparatus, also adding has additive, and said additive comprises brightener and/or abrasive pastes.
In the preparation method of metal shell of the present invention, the frequency of said vibration is 50-150HZ, and the time of vibro-grinding is 0.5-2.5 hour.
In the preparation method of metal shell of the present invention, said abrasive material comprises ceramic-like grinding stone and plastics grinding stone, and said grinding stone is selected from particle diameter different polishing stone.
Simultaneously, the invention also discloses a kind of metal shell, said metal shell adopts aforesaid preparation method to prepare, and comprises metal base and rete, and said metallic substrate surface is distributed with mill decorative pattern reason, and said rete is positioned on the said mill decorative pattern reason.
In metal shell of the present invention, the thickness of said rete is the 0.5-20 micron.
In metal shell of the present invention, said metal base is selected from a kind of in stainless steel, aluminium alloy, titanium alloy, the kirsite.
In metal shell of the present invention, said rete is one or more in chromium nitride, chromium carbide, titanium nitride, titanium carbide, titanium oxide, the nitrogen titanium aluminide.
Preparation method of the present invention forms mill decorative pattern reason through vibro-grinding on the surface of metal shell; And on mill decorative pattern reason, rete is set; Make metal shell have mill and spend metal-like modelled after an antique; Improved the aesthetics of metal shell, antique effect with uniqueness, and wearability and fine corrosion resistance, high comprehensive performance.Simultaneously, said method technology is simple, and yield is high, cost is low, is fit to heavy industrialization and uses.
The specific embodiment
Clearer for technical problem, technical scheme and beneficial effect that the present invention is solved, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention discloses a kind of preparation method of metal shell, comprises the steps:
Step 1, metal base is positioned in the milling apparatus, in milling apparatus, adds abrasive material and water, on milling apparatus or metal base, apply vibration then, make the surface of metal base form mill decorative pattern reason.In the present invention, described mill decorative pattern reason presents the effect that mill is spent texture modelled after an antique, and described mill spends texture modelled after an antique to obtain through metal base being carried out the vibro-grinding processing; Specifically incite somebody to action, promptly adopt milling apparatus, for example: Rosler vibrates abrasion wear test machine; Choose suitable abrasive (comprising the selection of kind and size); Add suitable grinding aid simultaneously, under certain milling time, obtain the metal surface of required certain wear degree.In the present invention; Described vibro-grinding is different with traditional grinding; It is a kind of improved Ginding process that the milling apparatus in traditional attrition process (or workpiece) is applied vibration, for example: can on the surface of the metal shell that passes through pre-treatment (cleaning, roughing etc.), place free abrasive material, then vibrational energy is attached on the milling apparatus (or metal shell); Make milling apparatus (or metal shell) do vibration clocklike with certain frequency and amplitude; Thereby accomplish deburring, surface mill flower processing, make the surface of metal base form mill decorative pattern reason, give the simple and unsophisticated sensation of people.
In this step, described metal base can be selected from stainless steel, aluminium alloy, titanium alloy, kirsite etc.Said abrasive material comprises ceramic-like grinding stone and plastics grinding stone, and according to the material of workpiece, shape and desired surperficial fineness are selected; Mill spends the grinding of lines modelled after an antique to be preferably the plastics grinding stone, and preferably, said grinding stone is selected particle diameter different polishing stone; For example: select spheroidal palm fibre corundum grinding stone; Wherein, it is half that particle diameter is that the grinding stone of 6-8mm and grinding stone that particle diameter is 3-5mm respectively account for, so that the mill decorative pattern of metallic substrate surface reason is more natural.Equally, the grinding aid that is added is a major consideration with the workpiece material then, selects for use according to purposes, and grinding aid mainly comprises water and cleaning agent; Water is as the decentralized medium of abrasive material, and cleaning agent then mainly plays lubricated effect, in the present invention; The weight ratio of said abrasive material and auxiliary agent is 10-30:1, and the weight ratio of said cleaning agent and water is 1:30-60, simultaneously; Needs according to grinding can also add an amount of additive, and said additive comprises brightener, abrasive pastes; Said brightener is selected according to metal base, and for example: metal base is selected from stainless steel, then correspondingly selects the stainless steel brightener.
In this step, on milling apparatus or metal base, apply vibration, vibration frequency is 50-150HZ HZ; In process of lapping, owing to water can be discharged, at set intervals; For example: 20-30min adds water in milling apparatus; Feasible grinding can be carried out smoothly, and the time of vibro-grinding was generally 0.5-2.5 hour, and the surface of metal base promptly forms mill decorative pattern reason behind the vibro-grinding.
Step 2, on said mill decorative pattern reason, form rete through physical vapour deposition (PVD) or anodized.Metal shell of the present invention is after handling through vibro-grinding; Obtain through PVD or anodized again; PVD technology or anode oxidation process have been conventionally known to one of skill in the art; Its technological parameter and condition can be adjusted according to specific requirement, on said mill decorative pattern reason, form rete through PVD or anodized, and said rete can be in chromium nitride, titanium nitride, titanium carbide, the nitrogen titanium aluminide one or more.For the thickness of rete, there is not too limitations.But the inventor finds, when the thickness of said rete is 0.5-20um, when being preferably 1-5um, combines with aforesaid mill decorative pattern reason through this rete, and is more favourable to the vision that produces grace.The rete that obtains through said PVD or anodized and the adhesion of base material are good, and have good corrosion-resistant and anti-wear performance.
Under normal conditions, the preparation method of said metal shell is carried out pre-treatment to base material before also being included in PVD or anodized, and the method for this pre-treatment is well known to a person skilled in the art, for example, and oil removing, ultrasonic waves for cleaning etc.
On metal base, form mill decorative pattern reason modelled after an antique and surface protection rete through said method; Obtain metal shell of the present invention; The mill decorative pattern reason on metal shell surface and the color that the PVD rete has; Make the metal shell surface present peculiar antique effect, have good wear-corrosion resistance simultaneously.
The present invention expands the process of surface treatment of existing metal shell, so that metal shell presents metal-like modelled after an antique, for this reason; The present invention carries out unique mechanical treatment to the metal shell surface, promptly adopts milling apparatus, chooses suitable abrasive material (kind and the size that comprise abrasive material); Add suitable grinding aid simultaneously, vibrational energy is attached on the milling apparatus (or metal shell), make milling apparatus (or metal shell) do vibration clocklike with certain frequency and amplitude; Under certain milling time, obtain the metal surface of required certain wear degree, grind the production efficiency height; The mill decorative pattern reason that grinding obtains evenly then, is carried out PVD or anodized on the metal shell with certain wear degree surface; Make the metal shell surface form coloured rete through PVD or anodized; Through combining of this rete and above-mentioned mill decorative pattern reason, can present mill flower effect modelled after an antique, and wear-corrosion resistance is good with color.
Adopt specific embodiment that the present invention is further elaborated below.
Embodiment 1
Present embodiment is used for making the silver color Stainless Steel Shell with mill decorative pattern reason modelled after an antique;
Step 1: vibro-grinding; Concrete technology is: 1, in the vibra shoot of Rosler vibration abrasion wear test machine, add abrasive material and auxiliary agent: wherein; Abrasive material is selected from yellow circular cone thing abrasive material RKF 10K 60kg, green pyramid thing abrasive material RKK 15P 20Kg, and auxiliary agent is selected from the mixture 5Kg of cleaning agent FC120 and water; The mixed proportion of cleaning agent and water is 1:50, adds an amount of stainless steel brightener or abrasive pastes simultaneously.2, Stainless Steel Shell is put into vibra shoot and grind, vibration frequency is 50HZ, and in process of lapping, per half an hour adds 0.5 premium on currency, grinds and after 2 hours Stainless Steel Shell is taken out;
Step 2: magnetron sputtering ion plating, concrete technology is: the Stainless Steel Shell after 1, will grinding is cleaned, and places after the oven dry on the pivoted frame in the vacuum chamber, starts vavuum pump and vacuumizes, and making vacuum chamber pressure is 6.0 * 10
-3Handkerchief.2, charging into argon gas adjusting vacuum pressure to vacuum chamber is 1.0 handkerchiefs, start grid bias power supply and carry out the ion cleaning, wherein, and 1100 volts of bias voltages, dutycycle 75%, the time is 20 minutes.3, after ion cleans and finishes, import the plated film program, the beginning plated film; Working gas argon gas and reacting gas nitrogen add the setting according to program automatically, and the vacuum chamber operating pressure is about 0.4 handkerchief, starts the chromium target then; Phase I: power is 9 kilowatts of steady state values; The bias voltage of grid bias power supply is 200 volts, and dutycycle is 75%, and the time is 10 minutes; Second stage: power is 9 kilowatts of steady state values, and the bias voltage of grid bias power supply is 200 volts, dutycycle 50%, and the time is 30 minutes; Phase III: power is 8 kilowatts of steady state values, and the bias voltage of grid bias power supply is 150 volts, dutycycle 30%, and the time is 20 minutes.After plated film finishes, program will finish operation automatically, close chromium target, grid bias power supply then, take out Stainless Steel Shell when naturally cooling to 80 ℃, be formed with the CrN rete on the surface of Stainless Steel Shell, and thicknesses of layers is about 3 microns;
Make silver color Stainless Steel Shell A1 with mill decorative pattern reason modelled after an antique through above-mentioned steps.
Embodiment 2
Present embodiment is used for making the orange Al-alloy casing with mill decorative pattern reason modelled after an antique;
Step 1: vibro-grinding; Concrete technology is: 1, in the vibra shoot of Rosler vibration abrasion wear test machine, add abrasive material and auxiliary agent: wherein; Abrasive material is selected from yellow circular cone thing abrasive material RKF 10K 50kg, green pyramid thing abrasive material RKK 15P 15Kg, and auxiliary agent is selected from the mixture 4Kg of FC120 and water; The mixed proportion of cleaning agent and water is 1:40, adds an amount of aluminium alloy brightener or abrasive pastes simultaneously.2, Al-alloy casing is put into groove and grind, vibration frequency is 50HZ, and in process of lapping, per half an hour will add 0.4 premium on currency, grinds and after 1.5 hours Al-alloy casing is taken out;
Step 2: anodized, concrete technology is: 1, change throwing: in putting into throwing groove after the extension washing on the Al-alloy casing after the milled processed, solution is the H of 600 ~ 800ml/L
3PO
4H with 150 ~ 250ml/L
2SO
4According to the ratio preparation of 3:1, temperature is 95 ~ 105 ℃, takes out behind 8 ~ 12s and washing.2, oxidation: the Al-alloy casing after will washing is put into oxidation trough oxidation 30 ~ 40min, and solution concentration is H
2SO
4180 ~ 200g/L, temperature is 18 ~ 20 ℃, voltage is 14.5 ~ 15.5V.3, preliminary treatment: it is 48 ~ 52 g/L that interpolation TAC Sormal 121 makes tank liquor concentration, and temperature is 38 ~ 42 ℃, and the time is 2.5 ~ 3.5 min, and pH value is 1.0 ~ 3.0, and pH value is regulated with NaOH and TAC Sormal 121 and regulated.4, dyeing: it is 2.5 ~ 3.5g/L that interpolation dyestuff U602 makes tank liquor concentration, and simultaneous temperature is 34 ~ 36 ℃, and time 5 ~ 7min, pH value are 5.0 ~ 6.0, and pH value is regulated with ammoniacal liquor and acetic acid and regulated.5, sealing of hole: it is 3 ~ 5 ml/L that interpolation hole sealing agent E-600 makes tank liquor concentration, and temperature is 93 ~ 97 ℃, and the time is 20 ~ 25 min, and pH value is 6.3 ~ 6.7, and pH value is regulated with ammoniacal liquor and acetic acid and regulated, and then Al-alloy casing is hung down;
Make orange Al-alloy casing A2 with mill decorative pattern reason modelled after an antique through above-mentioned steps.
Embodiment 3
Present embodiment is used for making the black titanium alloy housing with mill decorative pattern reason modelled after an antique;
Step 1: vibro-grinding, concrete technology is: 1, add abrasive material and lubricant in the vibra shoot of Rosler vibration abrasion wear test machine: abrasive material is selected spheroidal palm fibre corundum grinding stone, wherein; The 50kg of particle diameter 8mm; The 30kg of particle diameter 5mm, the 20Kg of particle diameter 4mm, auxiliary agent are selected from the mixture 5Kg of cleaning agent FC120 and water; The mixed proportion of cleaning agent and water is 1:50, adds an amount of abrasive pastes simultaneously.2, the titanium alloy housing is put into vibra shoot and grind, vibration frequency is 50HZ, and in process of lapping, per half an hour will add 0.5 premium on currency, grinds and after 2.5 hours the titanium alloy housing is taken out;
Step 2: magnetron sputtering ion plating, concrete technology is: the titanium alloy housing after 1, will grinding cleans, and places after the oven dry on the pivoted frame in the vacuum chamber, starts vavuum pump and vacuumizes, and making vacuum chamber pressure is 6.0 * 10
-3Handkerchief.2, charging into argon gas adjusting vacuum pressure to vacuum chamber is 1.0 handkerchiefs, starts grid bias power supply and carries out the ion cleaning, and wherein bias voltage is 1100 volts, dutycycle 75%, 20 minutes time.3, after ion cleans and finishes, import the plated film program, the beginning plated film; Working gas argon gas and reacting gas acetylene add the setting according to program automatically, and the vacuum chamber operating pressure is about 0.5 handkerchief, starts the chromium target then; Phase I: power is 9 kilowatts of steady state values; The bias voltage of grid bias power supply is 200 volts, and dutycycle is 75%, and the time is 10 minutes; Second stage: power is 9 kilowatts of steady state values, and the bias voltage of grid bias power supply is 200 volts, dutycycle 30%, and the time is 30 minutes.Phase III: power is 8 kilowatts of steady state values, and the bias voltage of grid bias power supply is 150 volts, dutycycle 15%, and the time is 30 minutes; After the plated film time arrives, program will be closed the end plated film automatically, close chromium target, grid bias power supply then, take out the titanium alloy housing when naturally cooling to 80 ℃, be formed with the CrC rete at the titanium alloy surface of shell, and thicknesses of layers is about 3.5 microns;
Make black titanium alloy housing A3 with mill decorative pattern reason modelled after an antique through above-mentioned steps.
Performance test
The above-mentioned metal shell A1-A3 for preparing is carried out following performance test:
1, adhesive force: test according to ASTM D 3359-2002;
2, anti-wear performance: test according to following method: under 24 ℃/54%RH condition, product loaded onto the 100g tool after, put into Rosler and vibrate wear-resisting machine vibro-grinding, analog equipment abrasion condition during normal use.The use friction media is: yellow circular cone: Rosler friction particles RKF 10K (3 parts), green pyramid: Rosler friction particles RKK 15P (1 part), cleaning agent: Rosler cleaning agent FC120.Testing time is 2 hours;
3, decay resistance: test according to GBT 10125.
Through above-mentioned test, the test result that obtains is seen table 1:
Table 1
| Sample | S1 | S2 | S3 |
| Adhesive force | 5B | 5B | 5B |
| Anti-wear performance | No noticeable wear in 2 hours | No noticeable wear in 2 hours | No noticeable wear in 2 hours |
| Decay resistance | There is not corrosion | There is not corrosion | There is not corrosion |
Can find out that from table 1 when the surface of metal shell disclosed by the invention had unique mill decorative pattern reason, the adhesive force of its superficial film, wearability and decay resistance were also very excellent.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the preparation method of a metal shell is characterized in that, comprises the steps:
Step 1, metal base is positioned in the milling apparatus, in milling apparatus, adds abrasive material and auxiliary agent, on milling apparatus or metal base, apply vibration then, make the surface of metal base form mill decorative pattern reason;
Step 2, on said mill decorative pattern reason, form rete through physical vapour deposition (PVD) or anodized.
2. preparation method according to claim 1 is characterized in that, the weight ratio of said abrasive material and auxiliary agent is 10-30:1.
3. preparation method according to claim 1 and 2 is characterized in that said auxiliary agent comprises water and cleaning agent, and the weight ratio of said cleaning agent and water is 1:30-60.
4. preparation method according to claim 1 is characterized in that, in step 1, in milling apparatus, also adding has additive, and said additive comprises brightener and/or abrasive pastes.
5. preparation method according to claim 1 is characterized in that, the frequency of said vibration is 50-150HZ, and the time of vibro-grinding is 0.5-2.5 hour.
6. preparation method according to claim 1 is characterized in that, said abrasive material comprises ceramic-like grinding stone and plastics grinding stone, and said grinding stone is selected from particle diameter different polishing stone.
7. metal shell; It is characterized in that said metal shell adopts and prepares like any described preparation method of claim 1-6, comprises metal base and rete; Said metallic substrate surface is distributed with mill decorative pattern reason, and said rete is positioned on the said mill decorative pattern reason.
8. metal shell according to claim 7 is characterized in that, the thickness of said rete is the 0.5-20 micron.
9. metal shell according to claim 7 is characterized in that, said metal base is selected from a kind of in stainless steel, aluminium alloy, titanium alloy, the kirsite.
10. metal shell according to claim 7 is characterized in that, said rete is one or more in chromium nitride, chromium carbide, titanium nitride, titanium carbide, titanium oxide, the nitrogen titanium aluminide.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110142440.7A CN102806516B (en) | 2011-05-30 | 2011-05-30 | A kind of metal shell and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110142440.7A CN102806516B (en) | 2011-05-30 | 2011-05-30 | A kind of metal shell and preparation method thereof |
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| Publication Number | Publication Date |
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| CN102806516A true CN102806516A (en) | 2012-12-05 |
| CN102806516B CN102806516B (en) | 2016-09-07 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104972283A (en) * | 2015-07-16 | 2015-10-14 | 广东欧珀移动通信有限公司 | Method for improving appearance expressive force of metal frame of mobile terminal |
| CN105644062A (en) * | 2014-12-03 | 2016-06-08 | 比亚迪股份有限公司 | Composite material and housing for mobile terminal, preparation method thereof and mobile terminal |
| CN107127530A (en) * | 2017-06-14 | 2017-09-05 | 宇龙计算机通信科技(深圳)有限公司 | A kind of method for metal working, metal shell and mobile terminal |
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| CN108312048A (en) * | 2018-01-31 | 2018-07-24 | 苏州领裕电子科技有限公司 | A kind of high light technology of 3C Product charging interface shell |
| CN113549869A (en) * | 2021-07-21 | 2021-10-26 | 深圳市智创谷技术有限公司 | Vacuum coating method with antique grain effect |
| WO2022067887A1 (en) * | 2020-09-29 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Loudspeaker box |
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| CN105644062A (en) * | 2014-12-03 | 2016-06-08 | 比亚迪股份有限公司 | Composite material and housing for mobile terminal, preparation method thereof and mobile terminal |
| CN105644062B (en) * | 2014-12-03 | 2018-09-07 | 比亚迪股份有限公司 | Composite material and shell for mobile terminal and preparation method thereof and mobile terminal |
| CN104972283A (en) * | 2015-07-16 | 2015-10-14 | 广东欧珀移动通信有限公司 | Method for improving appearance expressive force of metal frame of mobile terminal |
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| CN107438338B (en) * | 2016-05-27 | 2020-12-29 | 三星电子株式会社 | Housing, method of manufacturing the housing, and electronic device including the housing |
| CN107127530A (en) * | 2017-06-14 | 2017-09-05 | 宇龙计算机通信科技(深圳)有限公司 | A kind of method for metal working, metal shell and mobile terminal |
| CN108312048A (en) * | 2018-01-31 | 2018-07-24 | 苏州领裕电子科技有限公司 | A kind of high light technology of 3C Product charging interface shell |
| CN108312048B (en) * | 2018-01-31 | 2020-07-21 | 苏州领裕电子科技有限公司 | Highlight process for charging interface shell of 3C product |
| WO2022067887A1 (en) * | 2020-09-29 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Loudspeaker box |
| CN113549869A (en) * | 2021-07-21 | 2021-10-26 | 深圳市智创谷技术有限公司 | Vacuum coating method with antique grain effect |
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