JPS56158893A - High speed anodic oxidation method for aluminum or aluminum alloy - Google Patents
High speed anodic oxidation method for aluminum or aluminum alloyInfo
- Publication number
- JPS56158893A JPS56158893A JP6287780A JP6287780A JPS56158893A JP S56158893 A JPS56158893 A JP S56158893A JP 6287780 A JP6287780 A JP 6287780A JP 6287780 A JP6287780 A JP 6287780A JP S56158893 A JPS56158893 A JP S56158893A
- Authority
- JP
- Japan
- Prior art keywords
- time
- current
- electrolysis
- anodic oxidation
- aluminum
- 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.)
- Granted
Links
Abstract
PURPOSE: To form a thick anodic oxidation film at higher speeds as compared to the conventional art by starting constant current electrolysis of an Al material at high current density in electrolyte, and decreasing the electrolytic current along a specific burnt deposit occurrence curve at the time when the current time approaches the burnt deposit occurrence curve.
CONSTITUTION: Al or Al alloy 3 is set in sulfuric acid or electrolyte 2 consisting essentially of sulfuric acid, and is connected to the + electrode of an automatic current control device. Next, constant current electrolysis is first started at high current density i0, and at the time when electrolysis time t0 approaches to a burnt deposit occurrence curve Z, a function generator 7 which has beforehand been stored or set with total electrolysis time (t) and β value or the like is operated. Said electrolytic current is decreased in accordance with the equations I, II, and upon elapsing of the time (t), the electrolytic current is stopped to end the anodic oxidation of the Al or Al alloy. It is equally well to decrease the electrolytic current stepwise as shown by a dotted line in the figure.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6287780A JPS6023196B2 (en) | 1980-05-14 | 1980-05-14 | Method and apparatus for high-speed anodization of aluminum or aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6287780A JPS6023196B2 (en) | 1980-05-14 | 1980-05-14 | Method and apparatus for high-speed anodization of aluminum or aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56158893A true JPS56158893A (en) | 1981-12-07 |
| JPS6023196B2 JPS6023196B2 (en) | 1985-06-06 |
Family
ID=13212930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6287780A Expired JPS6023196B2 (en) | 1980-05-14 | 1980-05-14 | Method and apparatus for high-speed anodization of aluminum or aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6023196B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6089215A (en) * | 1983-10-20 | 1985-05-20 | Mitsubishi Electric Corp | Plating current control circuit |
| CN101942691A (en) * | 2010-09-29 | 2011-01-12 | 成都飞机工业（集团）有限责任公司 | Method and device for controlling electrolysis current density |
-
1980
- 1980-05-14 JP JP6287780A patent/JPS6023196B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6089215A (en) * | 1983-10-20 | 1985-05-20 | Mitsubishi Electric Corp | Plating current control circuit |
| CN101942691A (en) * | 2010-09-29 | 2011-01-12 | 成都飞机工业（集团）有限责任公司 | Method and device for controlling electrolysis current density |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6023196B2 (en) | 1985-06-06 |
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