JPS5518542A - Manufacture of tin free steel excellent in painting property, weldability, workability - Google Patents
Manufacture of tin free steel excellent in painting property, weldability, workabilityInfo
- Publication number
- JPS5518542A JPS5518542A JP8993078A JP8993078A JPS5518542A JP S5518542 A JPS5518542 A JP S5518542A JP 8993078 A JP8993078 A JP 8993078A JP 8993078 A JP8993078 A JP 8993078A JP S5518542 A JPS5518542 A JP S5518542A
- Authority
- JP
- Japan
- Prior art keywords
- electrolyte
- hoop
- weldability
- workability
- acid radical
- 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 improve TFS (tin free steel) in painting property, weldability, and workability, by keeping an electrolyte at small contents of sulfuric acid radical, nitric acid radical, and hydrochloric acid radical, the electrolyte which comprises principally chromic acid and dichromic acid, to form metallic chromium layer, hydrated chromium oxide layer of good quality.
CONSTITUTION: A steel hoop 1, the surface of which has been cleaned by electrolysis or pickling, is passed through an electrolyte 9 in a tank 7 by means of an energized roll 5, a sink roll 8. An electrolytic current is applied to the hoop 1 as a cathode and to anodes 6 which face to both sides of the hoop 1. The electrolyte is an aq. soln. of chromic acid, dichromic acid, and their salts, and the quantities of impurities contained in the electrolyte, e.g., sulfuric acid radical, nitric acid radical, chlorine ion, are kept small. On the surface of the steel hoop 1 are formed 0.5 mg/m2 metallic chromium layer, and 2W50 mg/m2 hydrated chromium oxide layer per one side of the hoop. The steel sheet fabricated by this method is remarkably excellent in plating property, weldability, and workability.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8993078A JPS5518542A (en) | 1978-07-25 | 1978-07-25 | Manufacture of tin free steel excellent in painting property, weldability, workability |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8993078A JPS5518542A (en) | 1978-07-25 | 1978-07-25 | Manufacture of tin free steel excellent in painting property, weldability, workability |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5518542A true JPS5518542A (en) | 1980-02-08 |
JPS5736986B2 JPS5736986B2 (en) | 1982-08-06 |
Family
ID=13984407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8993078A Granted JPS5518542A (en) | 1978-07-25 | 1978-07-25 | Manufacture of tin free steel excellent in painting property, weldability, workability |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5518542A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5735697A (en) * | 1980-08-14 | 1982-02-26 | Nippon Steel Corp | Production of chromate film steel plate for vessel of superior weldability and corrosion resistance after painting |
JPS5735698A (en) * | 1980-08-14 | 1982-02-26 | Nippon Steel Corp | Production of chromate film steel plate for vessel of superior weldability and corrosion resistance after painting |
US4511631A (en) * | 1984-04-13 | 1985-04-16 | Toyo Kohan Co., Ltd. | Metallic chromium-nickel-hydrated chromium oxide-coated tin free steel and process for the production thereof |
DE3418884A1 (en) * | 1984-05-18 | 1985-11-21 | Toyo Kohan Co., Ltd., Tokio/Tokyo | SURFACE TREATED STEEL SHEET WITH TRIPLE COATING AND METHOD FOR THE PRODUCTION THEREOF |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4928543A (en) * | 1972-07-14 | 1974-03-14 |
-
1978
- 1978-07-25 JP JP8993078A patent/JPS5518542A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4928543A (en) * | 1972-07-14 | 1974-03-14 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5735697A (en) * | 1980-08-14 | 1982-02-26 | Nippon Steel Corp | Production of chromate film steel plate for vessel of superior weldability and corrosion resistance after painting |
JPS5735698A (en) * | 1980-08-14 | 1982-02-26 | Nippon Steel Corp | Production of chromate film steel plate for vessel of superior weldability and corrosion resistance after painting |
JPS5932557B2 (en) * | 1980-08-14 | 1984-08-09 | 新日本製鐵株式会社 | Manufacturing method of chromate-coated steel sheet for containers with excellent weldability and corrosion resistance after painting |
JPS5932556B2 (en) * | 1980-08-14 | 1984-08-09 | 新日本製鐵株式会社 | Manufacturing method of chromate-coated steel sheet for containers with excellent weldability and corrosion resistance after painting |
US4511631A (en) * | 1984-04-13 | 1985-04-16 | Toyo Kohan Co., Ltd. | Metallic chromium-nickel-hydrated chromium oxide-coated tin free steel and process for the production thereof |
DE3418884A1 (en) * | 1984-05-18 | 1985-11-21 | Toyo Kohan Co., Ltd., Tokio/Tokyo | SURFACE TREATED STEEL SHEET WITH TRIPLE COATING AND METHOD FOR THE PRODUCTION THEREOF |
Also Published As
Publication number | Publication date |
---|---|
JPS5736986B2 (en) | 1982-08-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3989604A (en) | Method of producing metal strip having a galvanized coating on one side | |
JPH0759759B2 (en) | Method and apparatus for descaling annealed stainless steel strip | |
DE1300414B (en) | Object, preferably made of ferrous metal, with a dense, firmly adhering, shiny anti-corrosion coating made of an aluminum-manganese alloy and a method for its production | |
WO2000042241A1 (en) | Electrowinning anodes which rapidly produce a protective oxide coating | |
US3933605A (en) | Non-polluting pickling method | |
US4427499A (en) | Process for surface treatment of stainless steel sheet | |
JPS5518542A (en) | Manufacture of tin free steel excellent in painting property, weldability, workability | |
JPS56146886A (en) | Production of coated type electrode of lead dioxide | |
US4875984A (en) | Method for manufacturing electrolytically chromated steel sheet | |
DE2646697A1 (en) | METHOD FOR TREATMENT OF GALVANIZED METAL STRIP | |
US3054737A (en) | Process and bath for electrosmoothing ferrous metals | |
US3824160A (en) | Manufacture of copper dichromate and related materials | |
JPS5767133A (en) | Continuous annealing installation having adjusting device for strip surface | |
EP0330921B1 (en) | Method for manufacturing electrolytically chromated steel sheet | |
JPS6028918B2 (en) | Post-treatment method for non-plated side of single-sided zinc-based electroplated steel sheet | |
DE2940741C2 (en) | ||
US6837973B1 (en) | Apparatus for electrically coating a hot-rolled steel substrate | |
JPS57192295A (en) | Surface treated steel sheet of excellent painting property | |
AT394398B (en) | METHOD FOR PROCESSING METAL CHLORIDE SOLUTIONS | |
CA1256357A (en) | Method of pickling iron or steel objects | |
JPS57192293A (en) | Manufacture of surface treated steel sheet of excellent paint adherence | |
JP3439588B2 (en) | Highly efficient cathodic protection method | |
JP3410594B2 (en) | Highly efficient cathodic protection method | |
JP3061544B2 (en) | Insoluble electrode | |
JPS55107798A (en) | Preparation of electrolytic chromate treated steel sheet |