JPS5739195A - Method and apparatus for carrying out anodic oxidation treatment of aluminum - Google Patents
Method and apparatus for carrying out anodic oxidation treatment of aluminumInfo
- Publication number
- JPS5739195A JPS5739195A JP11268480A JP11268480A JPS5739195A JP S5739195 A JPS5739195 A JP S5739195A JP 11268480 A JP11268480 A JP 11268480A JP 11268480 A JP11268480 A JP 11268480A JP S5739195 A JPS5739195 A JP S5739195A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- anodic oxidation
- anode
- product
- current
- 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
Landscapes
- Electrochemical Coating By Surface Reaction (AREA)
Abstract
PURPOSE: To improve film quality of an obtained anodic oxidation film and contrive to make the quality uniform by a method wherein Al to be treated is connected to an anode side and, thereafter, a distance between both anode and cathode wherein a distance therebetween is made variable is adjusted to subject the aforementioned Al to anodic oxidation treatment at a constant voltage and a constant current density.
CONSTITUTION: Corresponding to a treating area of an Al product to be subjected to anodic oxidation connected to a side of an anode 4, a variable resistor of a current setting instrument 10 and a voltage setting instrument 11 is mainpulated to set current and voltage suitable for said product. Then, D.C. voltage rectified by a rectifier elememt 7 is applied to both cathode and anode 2, 3, 4 as well as the applied current and voltage values are applied to a control part 9. During this time, when difference is generated between the electrolytic voltage applied between both electrodes 2, 3, 4 and the voltage value set by the setting instrument 11, the control part 9 detects the variation thereof to increase or decrease a distance between the cathodes 2, 3 and the anode 4. As the result, an anodic oxidation film having constant quality is formed on a surface of the Al product at all times.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11268480A JPS5915998B2 (en) | 1980-08-18 | 1980-08-18 | Aluminum anodizing treatment method and device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11268480A JPS5915998B2 (en) | 1980-08-18 | 1980-08-18 | Aluminum anodizing treatment method and device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5739195A true JPS5739195A (en) | 1982-03-04 |
JPS5915998B2 JPS5915998B2 (en) | 1984-04-12 |
Family
ID=14592880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11268480A Expired JPS5915998B2 (en) | 1980-08-18 | 1980-08-18 | Aluminum anodizing treatment method and device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5915998B2 (en) |
-
1980
- 1980-08-18 JP JP11268480A patent/JPS5915998B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5915998B2 (en) | 1984-04-12 |
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