CN107937964A - A kind of bright yellow coloring method of illuminating colour and aluminum alloy die casting - Google Patents
A kind of bright yellow coloring method of illuminating colour and aluminum alloy die casting Download PDFInfo
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- CN107937964A CN107937964A CN201711400167.7A CN201711400167A CN107937964A CN 107937964 A CN107937964 A CN 107937964A CN 201711400167 A CN201711400167 A CN 201711400167A CN 107937964 A CN107937964 A CN 107937964A
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- die casting
- aluminum alloy
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
- C25D11/243—Chemical after-treatment using organic dyestuffs
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/20—Electrolytic after-treatment
- C25D11/22—Electrolytic after-treatment for colouring layers
Abstract
The invention discloses a kind of illuminating colour and the bright yellow coloring method of aluminum alloy die casting, belongs to aluminum alloy die casting coloring field.The illuminating colour is to include：The aqueous solution of alizarin yellow, acid scarlet and glacial acetic acid, wherein, the concentration of the alizarin yellow is 5 10g/L, and the concentration of the acid scarlet is 1 3g/L, and the concentration of the glacial acetic acid is 0.2 4g/L.The described method includes：Aluminum alloy die casting is coloured using illuminating colour, the illuminating colour is to include：The aqueous solution of alizarin yellow, acid scarlet and glacial acetic acid, wherein, the concentration of the alizarin yellow is 5 10g/L, and the bright red concentration is 1 3g/L, and the concentration of the glacial acetic acid is 0.2 4g/L.Aluminum alloy die casting can be colored as bright yellow by illuminating colour provided in an embodiment of the present invention, and aluminum alloy die casting is colored as bright yellow by the bright yellow coloring method of aluminum alloy die casting provided in an embodiment of the present invention, and has metallic luster.
Description
Technical field
The present invention relates to aluminum alloy die casting to colour field, the bright Huang of more particularly to a kind of illuminating colour and aluminum alloy die casting
Chromatic colorant method.
Background technology
Alloy colouring refers to that aluminium alloy passes through table the methods of chemical impregnation, electrochemical process and heat treating process in aluminium alloy
Face forms one layer of film layer for carrying certain color, and the film layer has certain anti-corrosion capability.
Aluminum alloy die casting can only be colored as to bronze color method at present, aluminum alloy die casting can't be coloured to bright Huang
Color, the bronze colour color method include being passivated the surface of aluminium alloy to be colored, at anodic oxidation, coloring and closing
Reason, in coloring treatment, using acid dark-blue, alizarin yellow and glacial acetic acid as illuminating colour.
In the implementation of the present invention, inventor has found that the prior art has at least the following problems：
The coloring color of existing aluminum alloy die casting is single, and aluminum alloy die casting cannot be coloured to bright yellow, this
Define the application range of aluminum alloy die casting.
The content of the invention
In order to solve the problems, such as that aluminum alloy die casting coloring color of the prior art is single, an embodiment of the present invention provides
A kind of bright yellow coloring method of illuminating colour and aluminum alloy die casting.The technical solution is as follows：
On the one hand, it is to include an embodiment of the present invention provides a kind of illuminating colour, the illuminating colour：Alizarin yellow, acidity
The bright red and aqueous solution of glacial acetic acid, wherein, the concentration of the alizarin yellow is 5-10g/L, and the bright red concentration is 1-3g/L, institute
The concentration for stating glacial acetic acid is 0.2-4g/L.
On the other hand, an embodiment of the present invention provides a kind of bright yellow coloring method of aluminum alloy die casting, the method bag
Include：
Aluminum alloy die casting is coloured using illuminating colour, the illuminating colour is to include：Alizarin yellow, acid scarlet
With the aqueous solution of glacial acetic acid, wherein, the concentration of the alizarin yellow is 5-10g/L, and the bright red concentration is 1-3g/L, the ice
The concentration of acetic acid is 0.2-4g/L.
Specifically, the coloration temperature is 40-65 DEG C, and the coloration time is 5-20min.
Specifically, before the aluminum alloy die casting is coloured, the aluminum alloy die casting is subjected to coloring pretreatment,
The coloring pretreatment includes：
1) using the aluminum alloy die casting as anode, it is placed in carrying out the in the sulfuric acid solution that concentration is 180-220g/L
One coloring pretreatment, the voltage of the first coloring pretreatment is 8-10V, and the current density of the first coloring pretreatment is
0.3-1A/dm2, the reaction time of the first coloring pretreatment is 10-30s；
2) using the aluminum alloy die casting as cathode, using fine aluminium as anode, it is placed in carrying out in coloring pretreatment fluid
Second coloring pretreatment, the reaction temperature of the second coloring pretreatment is 20-35 DEG C, the voltage of the second coloring pretreatment
For 8-10V, the current density of the second coloring pretreatment is 0.1-0.5A/dm2, it is described to colour the pre- reaction time for the second time
For 20-40s；
3) aluminum alloy die casting is heated into 6-12h at 70-80 DEG C.
Further, the coloring pretreatment fluid is to include aluminum sulfate, magnesium acetate and the water for colouring pretreatment glacial acetic acid
Solution, the concentration of the aluminum sulfate is 0.5-1g/L, and the concentration of the magnesium acetate is 0.3-1g/L, the coloring pretreatment ice
The concentration of acetic acid is 1-3g/L.
Further, aluminum alloy die casting is subjected to anodized, the side of the anodic oxidation before the coloring
Method includes：The aluminum alloy die casting is placed in the sulfuric acid solution that concentration is 180-220g/L, the temperature of the anodic oxidation
For 5-20 DEG C, the voltage of the anodic oxidation is 8-18V, and the current density of the anodic oxidation is 0.8-1.5A/dm2。
Further, surface preparation is carried out to the aluminum alloy die casting before the anodic oxidation, the surface is pre-
The method of processing includes：
The surface of the aluminum alloy die casting is polished；
Remove remaining greasy dirt on the aluminum alloy die casting；
Wash the aluminum alloy die casting；
The aluminum alloy die casting is placed in concentrated nitric acid and soaks 5-10min, obtains surface covered with described in passivating film
Aluminum alloy die casting；Wherein, the concentration of concentrated nitric acid is 70%.
It is used for the anodic oxidation after the aluminum alloy die casting is cleaned.
Specifically, by the aluminum alloy die casting after coloring by washing and carrying out Seal treatment, the Seal treatment
Method include：The aluminum alloy die casting is placed in lock solution, the temperature of the Seal treatment is 80-85 DEG C, described
The time of Seal treatment is 15-20min.
Specifically, the lock solution is to include：The aqueous solution of nickel sulfate, cobaltous sulfate and sodium acetate, wherein, the sulfuric acid
The concentration of nickel is 4.2g/L, and the concentration of the cobaltous sulfate is 0.7g/L, and the concentration of sodium acetate is 4.8g/L, the lock solution
PH value is 4.5-5.5.
Further, will be processed by shot blasting by the aluminum alloy die casting of Seal treatment.
The beneficial effect that technical solution provided in an embodiment of the present invention is brought is：Illuminating colour provided in an embodiment of the present invention
Aluminum alloy die casting can be colored as to bright yellow, and there is metallic luster, meanwhile, the granular size of the illuminating colour is respectively less than
1nm so that the illuminating colour is easy to be adsorbed to the hole depths of anode oxide film, and has the aluminum alloy die casting after coloring
There is higher color fastness, the bright yellow coloring method of aluminum alloy die casting provided in an embodiment of the present invention, passes through alizarin yellow and acidity
It is bright red that aluminum alloy die casting is dyed into bright yellow, and the compacting aluminium alloy after dyeing has metallic luster.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the flow chart of the bright yellow coloring method of aluminum alloy die casting provided by Embodiment 2 of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
The present embodiment agents useful for same is purchased from Chemical market.
Embodiment one
An embodiment of the present invention provides a kind of illuminating colour, which is suitable for aluminium alloy compression casting of the coloring containing Mn
Part, wherein, the content of Mn can be 0.3-5% in aluminum alloy die casting.The illuminating colour is to include：Alizarin yellow, acid scarlet
With the aqueous solution of glacial acetic acid, wherein, the concentration of alizarin yellow is 5-10g/L, and the concentration of acid scarlet is 1-3g/L, glacial acetic acid it is dense
Spend for 0.2-4g/L.
The molecular weight of alizarin yellow, acid scarlet and glacial acetic acid in the illuminating colour of the present invention is respectively less than 1000, according to road
That empirical table, molecular weight 1000, then corresponding aperture is 0.001 μm, meanwhile, the mistake by the illuminating colour using 1nm
Filter membrane is filtered, which can pass through filter membrane, it was demonstrated that the illuminating colour is less than 1nm.
Illuminating colour provided in an embodiment of the present invention can colour aluminum alloy die casting, the aluminium alloy pressure after coloring
Casting is bright yellow, and has metallic luster, which increase the color of colored aluminum alloy die casting, meanwhile, the illuminating colour is molten
The granular size of solution in water is respectively less than 1nm, due to capillary absorption effect so that the illuminating colour is easy to be adsorbed to anodic oxygen
Change the hole depths of film, and make the aluminum alloy die casting after coloring that there is higher color fastness.
Embodiment two
An embodiment of the present invention provides a kind of bright yellow coloring method of aluminum alloy die casting, this method is suitable for containing Mn's
Aluminum alloy die casting, and the content of Mn is 0.3-5%, with reference to Fig. 1, this method includes：
Step 1：Surface preparation, including：
Remove remaining greasy dirt on aluminum alloy die casting；Specifically, chemical method can be used, such as acid solution or caustic dip
Remaining greasy dirt on aluminum alloy die casting is removed etc. mode.
The surface of aluminum alloy die casting is polished；Specifically, the method that mechanical polishing or chemical polishing can be used
The surface of aluminum alloy die casting is polished.
Wash aluminum alloy die casting；
Aluminum alloy die casting is placed in concentrated nitric acid and soaks 5-10min, obtains aluminium alloy pressure of the surface covered with passivating film
Casting；
After washing aluminum alloy die casting of the surface covered with passivating film and dried.
Step 2：Anodized, the method for anodic oxidation include：It is 180- that aluminum alloy die casting is placed in concentration
In the sulfuric acid solution of 220g/L, the temperature of anodic oxidation is 5-20 DEG C, and the voltage of anodic oxidation is 8-18V, the electricity of anodic oxidation
Current density is 0.8-1.5A/dm2.The oxide film of high quality of water white transparency is obtained after anodic oxidation.Wash the aluminium after anodic oxidation
Alloy pressuring casting is simultaneously dried.Meanwhile pass through the hole of the anode oxide film on scanning electron microscope subsidiary aluminum alloy die casting
Gap size, the aperture of the hole of anode oxide film is 15-19nm, and the depth of the hole of anodic oxidation is surveyed by stripping method, is measured
The depth of the hole of the anode oxide film is 10-30 μm.
Step 3：Coloring pretreatment, 1) using aluminum alloy die casting as anode, noble metal plate as cathode (such as platinum or titanium),
It is placed in carrying out the first coloring pretreatment in the sulfuric acid solution that concentration is 180-220g/L, the voltage of the first coloring pretreatment is 8-
10V, the current density of the first coloring pretreatment is 0.3-1A/dm2, the reaction time of the first coloring pretreatment is 10-30s.The
One coloring pretreatment is used to remove the metal cation in anode oxide film, which includes Mn ions.
2) it is cathode by the processed aluminum alloy die casting of step 1), using pure aluminum plate as anode, is placed in colouring pre- place
Manage and the second coloring pretreatment is carried out in liquid, coloring pretreatment fluid is to include aluminum sulfate, magnesium acetate and coloring pretreatment glacial acetic acid
Aqueous solution, the concentration of aluminum sulfate is 0.5-1g/L, and the concentration of magnesium acetate is 0.3-1g/L, coloring pretreatment glacial acetic acid it is dense
To spend for 1-3g/L, the reaction temperature of the second coloring pretreatment is 20-35 DEG C, and the voltage of the second coloring pretreatment is 8-10V, second
The current density of coloring pretreatment is 0.1-0.5A/dm2, the second coloring pre- reaction time is 20-40s.The pre- place of second coloring
Reason further repairs anode oxide film with aluminium ion and magnesium ion, fills up the room of cation-deficient.Second step coloring pretreatment
After wash and aluminum alloy die casting and dry.
3) anode oxidation membrane of the aluminum alloy die casting obtained by step 2) is subjected to stabilization processes, processing method is will
Aluminum alloy die casting is placed in 70-80 DEG C of insulating box, and time 6-12h, aluminum alloy die casting is with insulating box one after heating
With cooling.
Step 4：Coloring, colours aluminum alloy die casting using illuminating colour, illuminating colour is to include：Alizarin yellow,
The aqueous solution of acid scarlet and glacial acetic acid, wherein, the concentration of alizarin yellow is 5-10g/L, and the concentration of acid scarlet is 1-3g/L, ice
The concentration of acetic acid is 0.2-4g/L.
Specifically, coloration temperature is 40-65 DEG C, coloration time 5-20min, and the aluminum alloy die casting after coloring is passed through
Wash and dried.
Step 5：Seal treatment, the method for Seal treatment include：Aluminum alloy die casting is placed in lock solution, at closing
The temperature of reason is 80-85 DEG C, and the time of Seal treatment is 15-20min, and lock solution includes：Nickel sulfate, cobaltous sulfate and acetic acid
Sodium, wherein, the concentration of nickel sulfate is 4.2g/L, and the concentration of cobaltous sulfate is 0.7g/L, and the concentration of sodium acetate is 4.8g/L, and closing is molten
The pH value of liquid is 4.5-5.5.It will be dried by the aluminum alloy die casting of Seal treatment after washing.After Seal treatment
Its thickness of anode oxide film scanning electron microscopic observation is 19 μm, its density is measured as 2.55 × 10 with stripping method3kg/m3, by hard
Degree measure microhardness is HV505.
Step 6：Polishing, the aluminum alloy die casting after coloring is processed by shot blasting.In the present embodiment, machinery can be used
Polishing processes are processed by shot blasting.The thickness for measuring the anode oxide film after polishing at the same time is 18 μm.By the aluminium alloy pressure after coloring
For casting when 48 is small after neutral salt spray test, the lustrous surface of aluminum alloy die casting is unchanged.
Meanwhile the aluminum alloy die casting sample after colored polish is subjected to acetes chinensis, the results show with spectrophotometer
Aberration △ E are respectively less than 1, this illustrates that the color of the aluminum alloy die casting sample does not have the phenomenon of aberration or layering.In addition, will coloring
Aluminum alloy die casting sample after polishing carries out metallic reflection rate measurement with spectrophotometer, in visible-range, measures this
The metallic reflection rate of aluminum alloy die casting sample can be more than 80%, it can be seen that, which has good
Reflecting properties, good reflecting properties are obtained by the metallic luster of the aluminum alloy die casting after coloring.Meanwhile multi-angle
The aluminum alloy die casting after colored polish is observed, the aluminum alloy die casting color after the colored polish is full uniformly, and range estimation has no
Any aberration or layering.
The bright yellow coloring method of aluminum alloy die casting provided in an embodiment of the present invention, by alizarin yellow and acid scarlet by aluminium
Alloy pressuring casting dyes bright yellow, and the compacting aluminium alloy after dyeing has metallic luster, meanwhile, it is pre- the present embodiment provides coloring
In processing, first step coloring pretreatment is used to the metal cation Mn in anode oxide film being transferred in sulfuric acid solution, if not
Mn ions are removed, then Mn ions can form the MnO of the MnO, even black of grey in anode oxide film2, eliminate Mn from
After son, anode oxide film can avoid MnO and MnO2Interference, so as to show carry bright yellow metal gloss aluminium close
The degree bright in luster and coloring effect of golden die casting；The principle of electric charge " homopolar-repulsion " is utilized in second step coloring pretreatment
Eliminate the sulfate ion and nitrate ion in anode oxide film, on the one hand, remove sulfate ion and nitrate ion
Afterwards, the hole of anode oxide film is cleaned up so that illuminating colour provided in an embodiment of the present invention can enter anode oxide film
In hole, so as to improve the ability of anode oxide film absorption acid dyes, tinctorial yield is improved, on the other hand, goes sulfuric acid
The anode oxide film of radical ion and nitrate ion, and make the aluminium ion of the more trivalents of anode oxide film absorption, aluminium ion
Absorption and interionic transition reaction occurs into the hole depths of anode oxide film, and with anode oxide film, has filled up anodic oxygen
Change the vacancy of lattice lattice point in film, so that anode oxide film is fine and close and stablizes.In the 3rd step of coloring pretreatment, by anode
Oxidation film layer carries out stabilization processes so that the aluminium ion adsorbed on anode oxide film is fully oxidized, so as to improve anodic oxygen
Change α-Al in film2O3Shared ratio so that the component of anode oxide film is evenly, it is easier to ensure coloring in coloring process
Uniformly, while aluminium ion is fully oxidized and increases the volume of anode oxide film, and makes anode oxide film finer and close, more firmly,
On the one hand, this enables the aluminum alloy die casting after coloring to be processed by shot blasting anode oxide film, and makes anode oxide film
With more preferable metallic luster, on the other hand, fine and close anode oxide film can cause anode oxide film to have higher corrosion resistant
Erosion ability.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of illuminating colour, it is characterised in that the illuminating colour is to include：The water of alizarin yellow, acid scarlet and glacial acetic acid
Solution, wherein, the concentration of the alizarin yellow is 5-10g/L, and the concentration of the acid scarlet is 1-3g/L, the glacial acetic acid it is dense
Spend for 0.2-4g/L.
A kind of 2. bright yellow coloring method of aluminum alloy die casting, it is characterised in that the described method includes：
Aluminum alloy die casting is coloured using illuminating colour, the illuminating colour is to include：Alizarin yellow, acid scarlet and ice
The aqueous solution of acetic acid, wherein, the concentration of the alizarin yellow is 5-10g/L, and the concentration of the acid scarlet is 1-3g/L, the ice
The concentration of acetic acid is 0.2-4g/L.
3. according to the method described in claim 2, it is characterized in that, the coloration temperature is 40-65 DEG C, the coloration time is
5-20min。
4. according to the method described in claim 2, it is characterized in that, before the aluminum alloy die casting is coloured, will described in
Aluminum alloy die casting carries out coloring pretreatment, and the coloring pretreatment includes：
1) using the aluminum alloy die casting as anode, it is placed in carrying out first in the sulfuric acid solution that concentration is 180-220g/L
Color pre-processes, and the voltage of the first coloring pretreatment is 8-10V, and the current density of the first coloring pretreatment is 0.3-
1A/dm2, the reaction time of the first coloring pretreatment is 10-30s；
2) using the aluminum alloy die casting as cathode, using fine aluminium as anode, it is placed in carrying out second in coloring pretreatment fluid
Coloring pretreatment, the reaction temperature of the second coloring pretreatment is 20-35 DEG C, and the voltage of the second coloring pretreatment is 8-
10V, the current density of the second coloring pretreatment is 0.1-0.5A/dm2, it is described second coloring pretreatment reaction time be
20-40s；
3) aluminum alloy die casting is heated into 6-12h at 70-80 DEG C.
5. according to the method described in claim 4, it is characterized in that, the coloring pretreatment fluid is to include aluminum sulfate, magnesium acetate
With the aqueous solution of coloring pretreatment glacial acetic acid, the concentration of the aluminum sulfate is 0.5-1g/L, and the concentration of the magnesium acetate is
0.3-1g/L, the coloring pretreatment are 1-3g/L with the concentration of glacial acetic acid.
6. according to the method described in claim 4, it is characterized in that, aluminum alloy die casting is carried out before the coloring pretreatment
Anodized, the method for the anodic oxidation include：It is 180-220g/L's that the aluminum alloy die casting is placed in concentration
In sulfuric acid solution, the temperature of the anodic oxidation is 5-20 DEG C, and the voltage of the anodic oxidation is 8-18V, the anodic oxidation
Current density be 0.8-1.5A/dm2。
7. according to the method described in claim 6, it is characterized in that, before the anodic oxidation to the aluminum alloy die casting into
Row surface preparation, the method for the surface preparation include：
Remove remaining greasy dirt on the aluminum alloy die casting；
The surface of the aluminum alloy die casting is polished；
Wash the aluminum alloy die casting；
The aluminum alloy die casting is placed in concentrated nitric acid and soaks 5-10min, the aluminium of the surface covered with passivating film is obtained and closes
Golden die casting；
It is used for the anodic oxidation after the aluminum alloy die casting is cleaned.
8. according to the method described in claim 2, it is characterized in that, by the aluminum alloy die casting after coloring by washing simultaneously
Seal treatment is carried out, the method for the Seal treatment includes：The aluminum alloy die casting is placed in lock solution, the closing
The temperature of processing is 80-85 DEG C, and the time of the Seal treatment is 15-20min.
9. according to the method described in claim 8, it is characterized in that, the lock solution is to include：Nickel sulfate, cobaltous sulfate and vinegar
The aqueous solution of sour sodium, wherein, the concentration of the nickel sulfate is 4.2g/L, and the concentration of the cobaltous sulfate is 0.7g/L, the acetic acid
The concentration of sodium is 4.8g/L, and the pH value of the lock solution is 4.5-5.5.
10. according to the method described in claim 8, it is characterized in that, by by Seal treatment the aluminum alloy die casting into
Row polishing treatment.
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|---|---|---|---|---|
| CN1712575A (en) * | 2005-05-12 | 2005-12-28 | 江汉大学 | Bronze coloring process of pack alloy |
| CN103334140A (en) * | 2013-06-19 | 2013-10-02 | 佛山耀银山铝业有限公司 | Anodic oxidation and normal-temperature golden dyeing technology for aluminum alloy |
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| CN106867275A (en) * | 2017-01-09 | 2017-06-20 | 广东长盈精密技术有限公司 | The preparation method of aluminium alloy dyeing black dyes, the colouring method of aluminium alloy |
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2017
- 2017-12-22 CN CN201711400167.7A patent/CN107937964A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1712575A (en) * | 2005-05-12 | 2005-12-28 | 江汉大学 | Bronze coloring process of pack alloy |
| CN103334140A (en) * | 2013-06-19 | 2013-10-02 | 佛山耀银山铝业有限公司 | Anodic oxidation and normal-temperature golden dyeing technology for aluminum alloy |
| CN105506706A (en) * | 2016-01-04 | 2016-04-20 | 沈阳建筑大学 | Aluminum alloy anodizing coloring treatment method |
| CN106867275A (en) * | 2017-01-09 | 2017-06-20 | 广东长盈精密技术有限公司 | The preparation method of aluminium alloy dyeing black dyes, the colouring method of aluminium alloy |
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Application publication date: 20180420 |