CN1005068B - Method for forming oxide film in aluminum electrolysis coloring process - Google Patents
Method for forming oxide film in aluminum electrolysis coloring process Download PDFInfo
- Publication number
- CN1005068B CN1005068B CN87103213.9A CN87103213A CN1005068B CN 1005068 B CN1005068 B CN 1005068B CN 87103213 A CN87103213 A CN 87103213A CN 1005068 B CN1005068 B CN 1005068B
- Authority
- CN
- China
- Prior art keywords
- aluminum
- oxide film
- oxidation
- current
- electrolytic solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004040 coloring Methods 0.000 title abstract description 7
- 238000005868 electrolysis reaction Methods 0.000 title description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 19
- 230000003647 oxidation Effects 0.000 claims abstract description 17
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 6
- 239000008151 electrolyte solution Substances 0.000 claims description 11
- 239000004411 aluminium Substances 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000010301 surface-oxidation reaction Methods 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 6
- 230000001590 oxidative effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 abstract description 2
- 239000011259 mixed solution Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
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- Laminated Bodies (AREA)
Abstract
The present invention relates to a method for forming an oxide film in an electrolytic coloring process of aluminum or an aluminum alloy. The porous oxide film is formed by using a mixed solution of sulfuric acid and aluminum sulfate as an electrolyte and oxidizing aluminum and aluminum alloy by adopting a 50 Hz alternating current power supply. During oxidation, the two ends of the AC electrode are hung with the oxide to be oxidized, so that the production efficiency is doubled compared with that of DC oxidation, and simultaneously, bulky rectifying equipment is saved. In addition, the oxide film formed by the invention has the advantages of higher glossiness, better color reproducibility, higher coloring speed, stronger corrosion resistance of the film and the like compared with a direct-current oxide film. The invention is suitable for all hard aluminum, industrial pure aluminum, antirust aluminum and various aluminum profiles.
Description
The present invention relates to form in the aluminum or aluminum alloy electrolytic colouring technology method of oxide film.
At present, in aluminium electrolyticing coloring technology, for the formation of porous oxide film mainly with sulfuric acid as electrolytic solution, most dc electrolyzings that adopt are as the J82-037676 patent.The research of carrying out alternating current-direct current stack oxidation is also arranged, and as the J79-001253 patent, but these two kinds of methods all need to be provided with bulky rectifier cabinet.And all be the one pole oxidation during oxidation, promptly in oxidation trough, have only the positive terminal of power supply to hang and treat oxidizing materials, and the negative pole end of power supply is hung to forming the metal pair utmost point that current circuit is provided with, as shown in Figure 2.Thereby production efficiency is low.
It is simple to the objective of the invention is to propose a kind of equipment, the ac oxide method that production efficiency is high.
The present invention be mixed solution with sulfuric acid and Tai-Ace S 150 as electrolytic solution, with the 50Hz AC power as power supply.Electrolytic solution and electrode all are contained in the oxidation trough, are to deoil during oxidation, and aluminium that polished and alloy thereof hang on two electrodes of oxidation trough, are immersed in the electrolytic solution, as shown in Figure 1.Oxidation for some time of switching on then forms porous oxide film.
The processing condition of oxidation and electrolyte prescription are:
Oxidation voltage: 10～25 volts of alternating-current, current density: 0.5～1A/dm
2
Oxidization time: 10～40 minutes, temperature was a room temperature.
Electrolytic solution composition: the H that contains d=1.84
2SO
480-120g/l, Tai-Ace S 150 1-12g/l.
With the porous rete of this processing condition gained can be in multiple solution of metal sulfates re-electrolysis to obtain solidity to corrosion good, the painted rete that tone is abundant.This technology except adapting to duralumin also applicable to commercial-purity aluminium, corrosion-resisting aluminium and various aluminium section bar.
The present invention treats that oxidizing materials are hung on two electrodes of alternating-current, thereby has saved huge rectifying installation, and production efficiency is doubled owing to adopt AC Anodizing.In addition, to adopt this be formed porous oxide film layer reaches advantages such as erosion resistance is strong well than have colouring speed fast and rete glossiness, color reproducibility with the formed porous oxide film of other method.
Below be to adopt the present invention to form the drawings and Examples of porous oxide film.
Fig. 1 is for implementing application drawing of the present invention.
(1) is oxidation trough among the figure, and (2) are electrolytic solution, and (3) are AC power, and (4) are to treat oxide compound.
Example 1: through electrochemical deoiling, the LY11 sheet material (4) after the chemical rightenning hangs on the two poles of the earth (3) of ac oxide groove (1).The prescription and the oxidizing process condition of electrolytic solution (2) are:
Electrolytic solution: the H that contains d=1.84
2SO
4120g/l
Tai-Ace S 150 1g/l
10 volts of alternating-current of voltage
10 minutes time
10～15 ℃ of temperature
Can obtain various tones after the oxide film re-electrolysis.
Example 2: through electrochemical deoiling, the LY11 sheet material (4) after the chemical rightenning hangs on two electrodes (3) of oxidation trough (1), and the prescription and the oxidizing process condition of oxidation liquid (2) are:
Electrolytic solution: the H that contains d=1.84
2SO
480g/l
Tai-Ace S 150 12g/l
25 volts of alternating-current of voltage
30 minutes time
10～15 ℃ of temperature
Can obtain various tones after the oxide film re-electrolysis.
Claims (5)
1, a kind of method that forms porous oxide film, aluminium and the alloy thereof that polished that wherein will deoil hangs over electrode tip, is immersed in the electrolytic solution, and the oxidation through after a while of switching on again forms the aluminium surface oxidation film, it is characterized in that,
A. electrolytic solution contains the H of d=1.84
2SO
480-120g/l and Tai-Ace S 150 1-12g/l;
B. oxidation voltage is the alternating-current of 10～25V, and its current density is 0.5～1A/dm
2;
C. oxidization time is 10～40 minutes, and temperature is a room temperature;
E. power supply natures: 50Hz alternating-current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87103213.9A CN1005068B (en) | 1987-04-30 | 1987-04-30 | Method for forming oxide film in aluminum electrolysis coloring process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87103213.9A CN1005068B (en) | 1987-04-30 | 1987-04-30 | Method for forming oxide film in aluminum electrolysis coloring process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87103213A CN87103213A (en) | 1987-12-30 |
| CN1005068B true CN1005068B (en) | 1989-08-30 |
Family
ID=4814332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87103213.9A Expired CN1005068B (en) | 1987-04-30 | 1987-04-30 | Method for forming oxide film in aluminum electrolysis coloring process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1005068B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206845A (en) * | 2011-05-30 | 2011-10-05 | 上海瑞尔实业有限公司 | Method for oxidizing brake master cylinder |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409381B (en) * | 2011-11-22 | 2014-05-28 | 沈阳理工大学 | Method for producing aluminum alloy oxide-film layer under strong magnetic field |
| CN109265043B (en) * | 2018-11-26 | 2021-05-28 | 中国建材检验认证集团厦门宏业有限公司 | Alkali-free liquid accelerator adopting electrolytic method and preparation method thereof |
-
1987
- 1987-04-30 CN CN87103213.9A patent/CN1005068B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206845A (en) * | 2011-05-30 | 2011-10-05 | 上海瑞尔实业有限公司 | Method for oxidizing brake master cylinder |
| CN102206845B (en) * | 2011-05-30 | 2015-03-25 | 上海瑞尔实业有限公司 | Method for oxidizing brake master cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN87103213A (en) | 1987-12-30 |
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