JPS57194295A - Production of electrolytically chromated steel plate - Google Patents
Production of electrolytically chromated steel plateInfo
- Publication number
- JPS57194295A JPS57194295A JP7799081A JP7799081A JPS57194295A JP S57194295 A JPS57194295 A JP S57194295A JP 7799081 A JP7799081 A JP 7799081A JP 7799081 A JP7799081 A JP 7799081A JP S57194295 A JPS57194295 A JP S57194295A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- chromium
- contg
- electrolyte
- oxide hydrate
- 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 provide outstanding secondary paint adhesiveness by forming metallic chromium on a steel plate through cathodic electrolysis, activating the entire part thereof by anodization and sticking uniform chromium oxide hydrate thereon.
CONSTITUTION: A metallic chromium layer and a chromium oxide hydrate layer are formed on the surface of a steel plate by electrolyzing the steel plate cathodically by an electrolyte for electrolytic chromating, etc. It is anodized in an electrolyte contg. 1 or ≥2 kinds of alkali salt and ammonium salt of chromic anhydride and alkali salt and ammonium salt of dichromatic acid and contg. these at about ≥2g/l in terms of chromium at 0.5W8.0Coulomb/dm2 and about 80°C, whereby the chromium oxide hydrate layer is prepd. Further, it is electrolyzed cathodically in an electrolyte of 1W4wt% (based on the weight of CrO3) fluorine concn. contg. 5W250g/l chromic anhydride at about 30W80°C liquid temps.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7799081A JPS57194295A (en) | 1981-05-25 | 1981-05-25 | Production of electrolytically chromated steel plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7799081A JPS57194295A (en) | 1981-05-25 | 1981-05-25 | Production of electrolytically chromated steel plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57194295A true JPS57194295A (en) | 1982-11-29 |
JPS613878B2 JPS613878B2 (en) | 1986-02-05 |
Family
ID=13649262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7799081A Granted JPS57194295A (en) | 1981-05-25 | 1981-05-25 | Production of electrolytically chromated steel plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57194295A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59100291A (en) * | 1982-11-30 | 1984-06-09 | Nippon Kokan Kk <Nkk> | Production of electrolytically chromate treated steel sheet having excellent adhesion to secondary painting |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5189843A (en) * | 1975-02-04 | 1976-08-06 | ||
JPS5235618A (en) * | 1975-09-16 | 1977-03-18 | Yogo Ito | Method and device for tuning five-holed bamboo |
JPS5358442A (en) * | 1976-11-06 | 1978-05-26 | Nippon Steel Corp | Process for preparing tinnfree steel |
JPS564157A (en) * | 1979-06-26 | 1981-01-17 | Ricoh Co Ltd | Switch constituting system in copying machine control system |
JPS5629691A (en) * | 1979-08-13 | 1981-03-25 | Nippon Kokan Kk <Nkk> | Preparation of electrolyzed chromate treated steel plate with excellent wet adhesiveness |
-
1981
- 1981-05-25 JP JP7799081A patent/JPS57194295A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5189843A (en) * | 1975-02-04 | 1976-08-06 | ||
JPS5235618A (en) * | 1975-09-16 | 1977-03-18 | Yogo Ito | Method and device for tuning five-holed bamboo |
JPS5358442A (en) * | 1976-11-06 | 1978-05-26 | Nippon Steel Corp | Process for preparing tinnfree steel |
JPS564157A (en) * | 1979-06-26 | 1981-01-17 | Ricoh Co Ltd | Switch constituting system in copying machine control system |
JPS5629691A (en) * | 1979-08-13 | 1981-03-25 | Nippon Kokan Kk <Nkk> | Preparation of electrolyzed chromate treated steel plate with excellent wet adhesiveness |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59100291A (en) * | 1982-11-30 | 1984-06-09 | Nippon Kokan Kk <Nkk> | Production of electrolytically chromate treated steel sheet having excellent adhesion to secondary painting |
JPH0246678B2 (en) * | 1982-11-30 | 1990-10-16 | Nippon Kokan Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS613878B2 (en) | 1986-02-05 |
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