JPS648297A - Method for electrolytically coloring aluminum material - Google Patents
Method for electrolytically coloring aluminum materialInfo
- Publication number
- JPS648297A JPS648297A JP16190787A JP16190787A JPS648297A JP S648297 A JPS648297 A JP S648297A JP 16190787 A JP16190787 A JP 16190787A JP 16190787 A JP16190787 A JP 16190787A JP S648297 A JPS648297 A JP S648297A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- positive
- rectangular
- frequency
- peak voltage
- 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
- Other Surface Treatments For Metallic Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Electrochemical Coating By Surface Reaction (AREA)
Abstract
PURPOSE:To prevent spalling and to uniformly color the surface of an Al member in a short time by dipping the anodized Al member in an electrolytic coloring soln., and impressing plural rectangular-wave voltages having specified frequency and peak voltage. CONSTITUTION:When a colored Al member as the building material is produced, the Al member is previously anodized in an aq. sulfuric acid soln. to form an anodic oxide film having many fine pores on the surface. The member is then dipped in an electrolyte dissolving the metallic salts of Ni, Cu, Se, Sn, etc., in accordance with the desired color tone, and a voltage of a rectangular- wave frequency wherein the positive peak voltage Va is equalized with the negative peak voltage Vc and the positive voltage applying time ta is preferably equalized with the negative voltage applying time tc is impressed. In this case, the absolute values of the positive and negative peak voltages and the rectangular frequency are set in the hatched area in the figure surrounded by A (1Hz, 15V), B (5Hz, 17V), C (10Hz, 19V), D (50Hz, 27V), E (60Hz, 29V), F (60Hz, 33V), G (50Hz, 31V), H (10Hz, 23V), I (5Hz, 21V), and J (1Hz, 19V). A colored layer having uniform density can be formed in a short time.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16190787A JPS648297A (en) | 1987-06-29 | 1987-06-29 | Method for electrolytically coloring aluminum material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16190787A JPS648297A (en) | 1987-06-29 | 1987-06-29 | Method for electrolytically coloring aluminum material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS648297A true JPS648297A (en) | 1989-01-12 |
JPH0244915B2 JPH0244915B2 (en) | 1990-10-05 |
Family
ID=15744286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16190787A Granted JPS648297A (en) | 1987-06-29 | 1987-06-29 | Method for electrolytically coloring aluminum material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS648297A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0553408U (en) * | 1991-12-27 | 1993-07-20 | ヤンマー農機株式会社 | Steering device for mobile agricultural machinery |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931614A (en) * | 1972-07-25 | 1974-03-22 |
-
1987
- 1987-06-29 JP JP16190787A patent/JPS648297A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931614A (en) * | 1972-07-25 | 1974-03-22 |
Also Published As
Publication number | Publication date |
---|---|
JPH0244915B2 (en) | 1990-10-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |