CN102312264B - Decorative oxidation method for aluminum and aluminum alloy - Google Patents
Decorative oxidation method for aluminum and aluminum alloy Download PDFInfo
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- CN102312264B CN102312264B CN 201110240298 CN201110240298A CN102312264B CN 102312264 B CN102312264 B CN 102312264B CN 201110240298 CN201110240298 CN 201110240298 CN 201110240298 A CN201110240298 A CN 201110240298A CN 102312264 B CN102312264 B CN 102312264B
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- cleaning
- oxidation
- aluminum
- current density
- hard anodizing
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 25
- 230000003647 oxidation Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 14
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 13
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 21
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 6
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 6
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 claims abstract description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004327 boric acid Substances 0.000 claims abstract description 6
- 239000010406 cathode material Substances 0.000 claims abstract description 6
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000007743 anodising Methods 0.000 claims description 15
- 239000004411 aluminium Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 238000005238 degreasing Methods 0.000 abstract 1
- 238000011282 treatment Methods 0.000 abstract 1
- 239000008151 electrolyte solution Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to a decorative oxidation method for aluminum and aluminum alloy. According to the method, an aluminum product is subjected to treatments of chemical degreasing, cleaning, neutralization, cleaning, hard anodic oxidation, cleaning and sealing to obtain a coating. The decorative oxidation method is characterized in that: 1 L of the oxidation solution used in the hard anodic oxidation step comprises: 20-50 g of oxalic acid, 30-50 g of ethylene glycol, 1-10 g of boric acid, 0.1-1 g of ammonium sulfate and 0.1-1 g of ammonium sulphonate; the process parameters of the hard anodic oxidation step are as follows: the temperature is 10-25 DEG C, the starting voltage is 0-50 V, the final voltage is more than 100 V, the anode current density is 2.5-3.0 A/dm<2>, the time is 50-70minutes, the cathode material is the lead plate, and the anode moving is 25-30 times/min. The prepared coating provided by the present invention is yellow, fine and compact, has the hardness of HV450-700 and the thickness of 40-50 micrometer, and can be continuously produced.
Description
Technical field
The present invention relates to the ornamental oxidation style of a kind of aluminium and aluminium alloy, relate to the anonizing of aluminium and aluminium alloy specifically.The process of surface treatment that belongs to aluminium alloy.
Background technology
The ornamental oxidation style kind of aluminium and aluminium alloy is a lot, generally can be divided into chemical oxidization method and electrochemical oxidation process is anonizing two big classes, wherein latter's application is more extensive, because the oxide film that anonizing obtains is better than the properties of oxide-film that all chemical oxidization methods obtain.Generally speaking the oxide film that obtains of anonizing is bright and clean, bright, transparency is higher, again through dyeing, can obtain the surface of various color glows.
Summary of the invention
Technical problem to be solved by this invention provides the ornamental oxidation style of a kind of aluminium and aluminium alloy, can obtain rete fine and smooth, fine and close, high rigidity.
For solving the problems of the technologies described above, the present invention realizes like this
The ornamental oxidation style of a kind of aluminium and aluminium alloy, alumiaum article obtains rete after electrochemical deoiling, cleaning, neutralization, cleaning, hard anodizing, cleaning, sealing, it is characterized in that: the oxidation liquid of hard anodizing step is: oxalic acid 20-50g/L, ethylene glycol 30-50 g/L, boric acid 1-10 g/L, ammonium sulfate 0.1-1g/L, ammonium sulphonate 0.1-1g/L; Hard anodizing process parameter is: temperature 10-25 ℃, the initial 0-50V of voltage, and finally greater than 100V, anodic current density 2.5-3.0A/dm
2, time 50-70min, cathode material are stereotypes, anode moves 25-30 time/min.
Concentration of oxalic acid is too low, and then oxide film is thin, and concentration is too high, and then rete is loose, can be dissolved falls.
The temperature of electrolytic solution is very big to hardness and the wear resistance influence of rete, and usually, temperature decline hardness and wear resisting property strengthen.
Anodic current density is relevant with film forming speed, improve current density then film forming speed accelerate, oxidization time shortens, but when overstepping the extreme limit current density, heating strengthens during oxidation, then film hardness reduces.
The present invention has following positive effect: the rete that the present invention obtains is yellow, and fine and smooth, fine and close, hardness reaches HV450-700, and thickness reaches the 40-50 micron, can produce continuously.
Embodiment
The present invention is described in further detail below in conjunction with embodiment.
The test specimen of following examples is that surface-area is 0.25dm
2The technical pure aluminium sheet.
Embodiment 1
The ornamental oxidation style of a kind of aluminium and aluminium alloy, alumiaum article obtains rete after electrochemical deoiling, cleaning, neutralization, cleaning, hard anodizing, cleaning, sealing.
The oxidation liquid of hard anodizing step is: oxalic acid 20g/L, ethylene glycol 30 g/L, boric acid 1 g/L, ammonium sulfate 0.1g/L, ammonium sulphonate 0.1g/L;
Hard anodizing process parameter is: 10 ℃ of temperature, the initial 0-50V of voltage, and finally greater than 100V, anodic current density 2.5A/dm
2, current density risen to predetermined initial current in the 30s after, allow electric current and voltage along with the carrying out of oxidising process changes automatically, time 70min, cathode material are stereotypes, anode moves 30 times/min.Electrolytic solution is cooled with circulating water.
It is yellow that the rete that obtains is, and fine and smooth, fine and close, hardness reaches HV470, and thickness reaches 40 microns, can produce continuously.
Embodiment 2
The ornamental oxidation style of a kind of aluminium and aluminium alloy, alumiaum article obtains rete after electrochemical deoiling, cleaning, neutralization, cleaning, hard anodizing, cleaning, sealing.
The oxidation liquid of hard anodizing step is: oxalic acid 30g/L, ethylene glycol 40 g/L, boric acid 3 g/L, ammonium sulfate 0.5g/L, ammonium sulphonate 0.4g/L;
Hard anodizing process parameter is: 15 ℃ of temperature, the initial 20V of voltage, and finally greater than 100V, anodic current density 3.0A/dm
2, current density risen to predetermined initial current in the 30s after, allow electric current and voltage along with the carrying out of oxidising process changes automatically, time 60min, cathode material are stereotypes, anode moves 26 times/min.Electrolytic solution is cooled with circulating water.
It is yellow that the rete that obtains is, and fine and smooth, fine and close, hardness reaches HV540, and thickness reaches 42 microns, can produce continuously.
Embodiment 3
The ornamental oxidation style of a kind of aluminium and aluminium alloy, alumiaum article obtains rete after electrochemical deoiling, cleaning, neutralization, cleaning, hard anodizing, cleaning, sealing.
The oxidation liquid of hard anodizing step is: oxalic acid 50g/L, ethylene glycol 50 g/L, boric acid 10 g/L, ammonium sulfate 1g/L, ammonium sulphonate 1g/L;
Hard anodizing process parameter is: 25 ℃ of temperature, the initial 50V of voltage, and finally greater than 100V, anodic current density 3.0A/dm
2, current density risen to predetermined initial current in the 30s after, allow electric current and voltage along with the carrying out of oxidising process changes automatically, time 50min, cathode material are stereotypes, anode moves 28 times/min.Electrolytic solution is cooled with circulating water.
It is yellow that the rete that obtains is, and fine and smooth, fine and close, hardness reaches HV680, and thickness reaches 45 microns, can produce continuously.
Above-mentioned embodiment does not limit technical scheme of the present invention in any form, and every employing is equal to replaces or technical scheme that the mode of equivalent transformation obtains all drops on protection scope of the present invention.
Claims (1)
1. the ornamental oxidation style of an aluminium and aluminium alloy, alumiaum article obtains rete after electrochemical deoiling, cleaning, neutralization, cleaning, hard anodizing, cleaning, sealing, it is characterized in that: the oxidation liquid of hard anodizing step is: oxalic acid 20-50g/L, ethylene glycol 30-50 g/L, boric acid 1-10 g/L, ammonium sulfate 0.1-1g/L, ammonium sulphonate 0.1-1g/L; Hard anodizing process parameter is: temperature 10-25 ℃, the initial 0-50V of voltage, and finally greater than 100V, anodic current density 2.5-3.0A/dm
2, current density risen to predetermined initial current in the 30s after, allow electric current and voltage along with the carrying out of oxidising process changes automatically, time 50-70min, cathode material are stereotypes, anode moves 25-30 time/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110240298 CN102312264B (en) | 2011-08-22 | 2011-08-22 | Decorative oxidation method for aluminum and aluminum alloy |
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| CN 201110240298 CN102312264B (en) | 2011-08-22 | 2011-08-22 | Decorative oxidation method for aluminum and aluminum alloy |
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| CN102312264A CN102312264A (en) | 2012-01-11 |
| CN102312264B true CN102312264B (en) | 2013-10-09 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966639A (en) * | 2013-01-29 | 2014-08-06 | 佛山市广成铝业有限公司 | Method for preparing anodised aluminium section bar |
| CN103484913B (en) * | 2013-09-16 | 2016-08-17 | 李淑兰 | Hard Anodic Oxidation of Aluminum Alloy processes technique |
| CN106906511A (en) * | 2017-02-23 | 2017-06-30 | 西华大学 | Method for replacing stirring of anodic oxidation tank liquor |
| JP2020033591A (en) * | 2018-08-29 | 2020-03-05 | いすゞ自動車株式会社 | Production method of metal compact having anodic oxide film, metal compact having anodic oxide film, piston, and internal combustion engine |
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|---|---|---|---|---|
| US4221640A (en) * | 1975-11-13 | 1980-09-09 | Hokusei Aluminum Company Ltd. | Method of treating a surface of an aluminum or aluminum alloy |
| US4526660A (en) * | 1984-02-06 | 1985-07-02 | Garriga Eliseo B | Anodizing method |
| CN1441858A (en) * | 2000-07-10 | 2003-09-10 | 巴斯福股份公司 | Method for producing gold-coloured surfaces pertaining to aluminium or aluminium alloys by means of formulations containing silver salt |
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| CN101392397A (en) * | 2008-10-21 | 2009-03-25 | 湖南大学 | Electrochemistry processing method for generating oxide film on surface of aluminium or aluminium alloy material |
| CN101498025A (en) * | 2009-01-16 | 2009-08-05 | 北京航空航天大学 | Titanium alloy anodic oxidation method based on sodium oxalate system |
| CN101619479A (en) * | 2009-07-29 | 2010-01-06 | 李其真 | Production technique for carrying out golden and anodization on surface of aluminium alloy |
| RU2390588C1 (en) * | 2008-12-25 | 2010-05-27 | Открытое акционерное общество "Всероссийский институт легких сплавов" (ОАО "ВИЛС") | Procedure for hard anodising items out of aluminium alloys |
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| JPS5542000A (en) * | 1979-09-17 | 1980-03-25 | Hokusei Alum Kk | Surface treating method for aluminum or aluminum alloy material |
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| US4221640A (en) * | 1975-11-13 | 1980-09-09 | Hokusei Aluminum Company Ltd. | Method of treating a surface of an aluminum or aluminum alloy |
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| CN101840939A (en) * | 2009-03-11 | 2010-09-22 | 富士胶片株式会社 | Aluminium alloy base plate and solar cell substrate |
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