CN106591918A - Aluminum alloy surface electrolytic coloring method - Google Patents
Aluminum alloy surface electrolytic coloring method Download PDFInfo
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- CN106591918A CN106591918A CN201611214432.8A CN201611214432A CN106591918A CN 106591918 A CN106591918 A CN 106591918A CN 201611214432 A CN201611214432 A CN 201611214432A CN 106591918 A CN106591918 A CN 106591918A
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- aluminum alloy
- electrolytic coloring
- aluminium alloy
- coloring
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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
- C25D11/14—Producing integrally coloured layers
-
- 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
- C25D11/16—Pretreatment, e.g. desmutting
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses an aluminum alloy surface electrolytic coloring method. The aluminum alloy surface electrolytic coloring method comprises the following operation steps that (1) aluminum alloy is subjected to polishing treatment, put into a mixed organic solvent to be immersed for 8-10 min and then taken out; (2) the aluminum alloy processed through the step (1) is put into an electrolytic solution to be subjected to electrolytic coloring; and (3) the aluminum alloy subjected to electrolytic coloring is put into a hole sealing solution to be subjected to hole sealing treatment. By means of the electrolytic coloring method, a prepared colored film on the surface of the aluminum alloy is uniform in color, bubbles, cracks and other defects are avoided, the adhesive force of the colored film is high, the abrasion resistance and the corrosion resistance are high, and the quality of the aluminum alloy is greatly improved.
Description
Technical field
The invention belongs to field of aluminium alloy material preparation, and in particular to a kind of aluminum alloy surface electrolysis coloring processes.
Background technology
Content of the aluminum in the earth's crust is only second to oxygen and silicon, occupy the 3rd, is the most abundant metal of content in the earth's crust, takes up an area
The 7-8% of shell gross mass, mainly with aluminum silicate minerals presence, also exists with bauxite and cryolite form.Aluminum is in the whole world
Industrial output is only second to ferrum, becomes the second largest metalloid material that amount used in industry at present is only second to iron and steel.Although adding it
He can change aluminum performance by element so that range of application is wider, but some performances of aluminium are also not ideal, such as hardness, wear-resisting
The characteristic such as property and corrosion resistance.So in order to improve its resistance to corrosion, strengthening its surface decoration effect, extend its service life,
Aluminium alloy is using going to toward need to be through corresponding surface treatment.Surface treatment of the different elements of addition to aluminium alloy has very big shadow
Ring.Typically, on surface treatment characteristics without very affecting, but the impact of copper silicon etc. is very big for the addition of magnesium, so that being difficult to implement good
Surface treatment.Therefore, purposes corresponding to product and the performance required to surface treatment, select appropriate surface treatment species
It is most important with method.At present frequently with the method for coloring surface of electrolytic coloring, the basic process of electrolytic coloring has three to aluminium alloy
Individual step composition：（1）The reactant ion such as metal ion and hydrion is transmitted near barrier layer surface；（2）Metal ion exists
Electronics is obtained between barrier layer and coloring liquid interface, hydrion penetrates barrier layer, between matrix and stop bed boundary electronics is obtained；
（3）Precipitating metal and generation oxygen.Therefore, in order to improve the efficiency and quality that are electrolysed, need during electrolysis to the greatest extent
It is possible to suppress hydrionic electric discharge.
The content of the invention
It is an object of the invention to provide a kind of electrolytic speed is fast, electrolytic efficiency is high, electrolytic coloring film properties are more superior
Aluminum alloy surface electrolysis coloring processes.
The present invention is achieved by the following technical solutions.
A kind of aluminum alloy surface electrolysis coloring processes, including following operating procedure：
（1）After by aluminium alloy grinding process, in being put into mixed organic solvents, take out after immersion 8-10min, wherein mixing organic molten
Agent is made up of the component of following weight portion：Polyacrylic acid 19-26 parts, isopropanol 60-65 parts, lauryl amine 13-16 parts；
（2）Will be through step（1）Aluminium alloy after process is put in electrolyte, carries out electrolytic coloring, and wherein electrolyte is by following
The component of weight portion is made：Nickel sulfate 26-30 parts, dithionic acid 0.1-0.3 parts, potassium pyrosulfate 2-4 parts, cinchonine sulfate 1-2
Part, 1,2- ethohexadiol 5-7 parts, D-ALPHA-Hydroxypropionic acid methyl ester 6-8 parts, uridine monophosphate disodium 10-15 parts, water 100-120 parts；
（3）Aluminium alloy after electrolytic coloring is put in pore-sealing liquid carries out sealing pores, and the temperature of pore-sealing liquid is 85-95
DEG C, wherein pore-sealing liquid is made up of the component of following weight portion：Sodium disilicate 19-22 parts, two molybdic acid hydrate sodium 0.1-0.3 parts, water
150-160 parts.
Specifically, above-mentioned steps（2）The temperature of middle electrolyte is 40-45 DEG C, and alternating voltage is 14-18V, during electrolytic coloring
Between be 3-4min.
Technical scheme from more than, the invention has the beneficial effects as follows：
Using the electrolysis coloring processes of the present invention, obtained aluminum alloy surface coloring film color even, lack without bubbling, slight crack etc.
Fall into, coloring film adhesive force is strong, and wearability, rotproofness are stronger, greatly improve the quality of aluminium alloy.It is organic mixed in the present invention
Bonding solvent can effectively remove aluminum alloy surface oils and fatss, less to the corrosivity of aluminium alloy, the stability of organic mixed solvent compared with
It is good, can continuously repeat and be used for multiple times；Dithionic acid, potassium pyrosulfate, cinchonine sulfate synergism in electrolyte, can be effective
Suppression electrolyte in hydrionic discharge process, can greatly lift the consistency of coloring film again, and the uniformity of electrolysis,
So that the aluminum alloy surface color after electrolytic coloring is homogeneous；1,2- ethohexadiol, D-ALPHA-Hydroxypropionic acid methyl ester and uridine monophosphate disodium synergism,
Wearability, the decay resistance of Electrolytically coloured film can be greatly lifted, the service life of aluminium alloy is lifted；The envelope that the present invention is provided
Oral fluid, good stability can effectively seal a large amount of micropores on anode oxide film, further lift the consistency of paint film, and
Various weatherabilities.
Specific embodiment
Following examples are used to illustrate the present invention, but can not be used for limiting the scope of the present invention.The reality adopted in embodiment
The condition of applying can be for further adjustments according to the condition of producer, and unaccounted implementation condition is usually conventional laboratory conditions.
Embodiment 1
A kind of aluminum alloy surface electrolysis coloring processes, including following operating procedure：
（1）After by aluminium alloy grinding process, in being put into mixed organic solvents, take out after immersion 8min, wherein mixed organic solvents
It is made up of the component of following weight portion：19 parts of polyacrylic acid, 60 parts of isopropanol, 13 parts of lauryl amine；
（2）Will be through step（1）Aluminium alloy after process is put in electrolyte, carries out electrolytic coloring, and wherein electrolyte is by following
The component of weight portion is made：26 parts of nickel sulfate, 0.1 part of dithionic acid, 2 parts of potassium pyrosulfate, 1 part of cinchonine sulfate, 1,2- pungent two
5 parts of alcohol, 6 parts of D-ALPHA-Hydroxypropionic acid methyl ester, 10 parts of uridine monophosphate disodium, 100 parts of water；
（3）Aluminium alloy after electrolytic coloring is put in pore-sealing liquid carries out sealing pores, and the temperature of pore-sealing liquid is 85 DEG C, its
Middle pore-sealing liquid is made up of the component of following weight portion：19 parts of sodium disilicate, 0.1 part of two molybdic acid hydrate sodium, 150 parts of water.
Specifically, above-mentioned steps（2）The temperature of middle electrolyte is 40 DEG C, and alternating voltage is 14V, and the electrolytic coloring time is
3min。
Embodiment 2
A kind of aluminum alloy surface electrolysis coloring processes, including following operating procedure：
（1）After by aluminium alloy grinding process, in being put into mixed organic solvents, take out after immersion 9min, wherein mixed organic solvents
It is made up of the component of following weight portion：23 parts of polyacrylic acid, 63 parts of isopropanol, 15 parts of lauryl amine；
（2）Will be through step（1）Aluminium alloy after process is put in electrolyte, carries out electrolytic coloring, and wherein electrolyte is by following
The component of weight portion is made：28 parts of nickel sulfate, 0.2 part of dithionic acid, 3 parts of potassium pyrosulfate, 1 part of cinchonine sulfate, 1,2- pungent two
6 parts of alcohol, 7 parts of D-ALPHA-Hydroxypropionic acid methyl ester, 13 parts of uridine monophosphate disodium, 110 parts of water；
（3）Aluminium alloy after electrolytic coloring is put in pore-sealing liquid carries out sealing pores, and the temperature of pore-sealing liquid is 90 DEG C, its
Middle pore-sealing liquid is made up of the component of following weight portion：21 parts of sodium disilicate, 0.2 part of two molybdic acid hydrate sodium, 155 parts of water.
Specifically, above-mentioned steps（2）The temperature of middle electrolyte is 43 DEG C, and alternating voltage is 16V, and the electrolytic coloring time is
3min。
Embodiment 3
A kind of aluminum alloy surface electrolysis coloring processes, including following operating procedure：
（1）After by aluminium alloy grinding process, in being put into mixed organic solvents, take out after immersion 10min, wherein mixed organic solvents
It is made up of the component of following weight portion：26 parts of polyacrylic acid, 65 parts of isopropanol, 16 parts of lauryl amine；
（2）Will be through step（1）Aluminium alloy after process is put in electrolyte, carries out electrolytic coloring, and wherein electrolyte is by following
The component of weight portion is made：30 parts of nickel sulfate, 0.3 part of dithionic acid, 4 parts of potassium pyrosulfate, 2 parts of cinchonine sulfate, 1,2- pungent two
7 parts of alcohol, 8 parts of D-ALPHA-Hydroxypropionic acid methyl ester, 15 parts of uridine monophosphate disodium, 120 parts of water；
（3）Aluminium alloy after electrolytic coloring is put in pore-sealing liquid carries out sealing pores, and the temperature of pore-sealing liquid is 95 DEG C, its
Middle pore-sealing liquid is made up of the component of following weight portion：22 parts of sodium disilicate, 0.3 part of two molybdic acid hydrate sodium, 160 parts of water.
Specifically, above-mentioned steps（2）The temperature of middle electrolyte is 45 DEG C, and alternating voltage is 18V, and the electrolytic coloring time is
4min。
Test 1：The adhesive force test of film
Commercially available common aluminium alloy in aluminium alloy and comparative example in embodiment 1,2,3 is bent into 180 °, embodiment 1,2,3 is made
Without coming off, the alloy colouring film in comparative example has slight coming off to the alloy colouring film for obtaining.
Test 2：Wearability is detected
Commercially available common aluminium alloy in aluminium alloy comparative example in embodiment 1,2,3 is undergone the erasing rubber friction for loading 500g
200 times, alloy colouring film obtained in embodiment 1,2,3 is unchanged, and the aluminium alloy color film in comparative example has part whiting existing
As.
Test 3：Corrosion resistance is detected
Testing result is as shown in table 1：
The corrosion resistance of aluminum alloy of table 1 is detected
| Project | 12% sodium chloride solution soaks 70 hours | 5% hydrochloric acid solution soaks 45 hours | 5% sodium hydroxide solution soaks 45 hours | 3% potassium permanganate solution soaks 30 hours |
| Embodiment 1 | Color film is unchanged | Color film is unchanged | Color film is unchanged | Color film is unchanged |
| Embodiment 2 | Color film is unchanged | Color film is unchanged | Color film is unchanged | Color film is unchanged |
| Embodiment 3 | Color film is unchanged | Color film is unchanged | Color film is unchanged | Color film is unchanged |
| Comparative example | Surface blistering is serious | Surface blistering is serious | Slightly bubble on surface | Surface blistering is serious |
Test from more than, the aluminium alloy after the obtained coloring of the present invention, coloring film adhesive force by force, wearability, rotproofness compared with
By force, the quality of aluminium alloy is greatly improved.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, the art
Those of ordinary skill, in the essential scope of the present invention, the change made, changes, addition or replace, should all belong to of the invention
Protection domain.
Claims (2)
1. a kind of aluminum alloy surface electrolysis coloring processes, it is characterised in that including following operating procedure：
（1）After by aluminium alloy grinding process, in being put into mixed organic solvents, take out after immersion 8-10min, wherein mixing organic molten
Agent is made up of the component of following weight portion：Polyacrylic acid 19-26 parts, isopropanol 60-65 parts, lauryl amine 13-16 parts；
（2）Will be through step（1）Aluminium alloy after process is put in electrolyte, carries out electrolytic coloring, and wherein electrolyte is by following
The component of weight portion is made：Nickel sulfate 26-30 parts, dithionic acid 0.1-0.3 parts, potassium pyrosulfate 2-4 parts, cinchonine sulfate 1-2
Part, 1,2- ethohexadiol 5-7 parts, D-ALPHA-Hydroxypropionic acid methyl ester 6-8 parts, uridine monophosphate disodium 10-15 parts, water 100-120 parts；
（3）Aluminium alloy after electrolytic coloring is put in pore-sealing liquid carries out sealing pores, and the temperature of pore-sealing liquid is 85-95
DEG C, wherein pore-sealing liquid is made up of the component of following weight portion：Sodium disilicate 19-22 parts, two molybdic acid hydrate sodium 0.1-0.3 parts, water
150-160 parts.
2. according to a kind of aluminum alloy surface electrolysis coloring processes described in claim 1, it is characterised in that step（2）Middle electricity
The temperature of solution liquid is 40-45 DEG C, and alternating voltage is 14-18V, and the electrolytic coloring time is 3-4min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611214432.8A CN106591918A (en) | 2016-12-26 | 2016-12-26 | Aluminum alloy surface electrolytic coloring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611214432.8A CN106591918A (en) | 2016-12-26 | 2016-12-26 | Aluminum alloy surface electrolytic coloring method |
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| CN106591918A true CN106591918A (en) | 2017-04-26 |
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| CN201611214432.8A Pending CN106591918A (en) | 2016-12-26 | 2016-12-26 | Aluminum alloy surface electrolytic coloring method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86101215A (en) * | 1986-02-28 | 1986-07-16 | 北京有色金属研究总院 | The coloring process of aluminum or aluminum alloy |
| JP2010248545A (en) * | 2009-04-13 | 2010-11-04 | Okuno Chem Ind Co Ltd | Sealing method for anodized film of aluminum alloy |
| CN103276428A (en) * | 2013-05-08 | 2013-09-04 | 江苏和兴汽车科技有限公司 | Oxidation process of aluminum alloy titanium-color-imitated anode |
| CN103361700A (en) * | 2013-07-24 | 2013-10-23 | 佛山市三水凤铝铝业有限公司 | Electrolytic coloring method for aluminum sections |
| CN104342736A (en) * | 2014-10-31 | 2015-02-11 | 湖州织里天荣铝材添加剂厂 | Aluminum alloy oxide film nickel-free normal-temperature sealing process and sealing agent |
-
2016
- 2016-12-26 CN CN201611214432.8A patent/CN106591918A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86101215A (en) * | 1986-02-28 | 1986-07-16 | 北京有色金属研究总院 | The coloring process of aluminum or aluminum alloy |
| JP2010248545A (en) * | 2009-04-13 | 2010-11-04 | Okuno Chem Ind Co Ltd | Sealing method for anodized film of aluminum alloy |
| CN103276428A (en) * | 2013-05-08 | 2013-09-04 | 江苏和兴汽车科技有限公司 | Oxidation process of aluminum alloy titanium-color-imitated anode |
| CN103361700A (en) * | 2013-07-24 | 2013-10-23 | 佛山市三水凤铝铝业有限公司 | Electrolytic coloring method for aluminum sections |
| CN104342736A (en) * | 2014-10-31 | 2015-02-11 | 湖州织里天荣铝材添加剂厂 | Aluminum alloy oxide film nickel-free normal-temperature sealing process and sealing agent |
Non-Patent Citations (3)
| Title |
|---|
| 张允诚 等: "《电镀手册》", 31 January 2007, 国防工业出版社 * |
| 王国良: "铝交流电解着色法", 《电镀与涂饰》 * |
| 许家浒 等: "铝及铝合金的电解着黑色", 《轻金属》 * |
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