GB613228A - Improvements in acid pickling tanks more particularly for steel strip mills - Google Patents
Improvements in acid pickling tanks more particularly for steel strip millsInfo
- Publication number
- GB613228A GB613228A GB1744546A GB1744546A GB613228A GB 613228 A GB613228 A GB 613228A GB 1744546 A GB1744546 A GB 1744546A GB 1744546 A GB1744546 A GB 1744546A GB 613228 A GB613228 A GB 613228A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- bath
- passes
- acid
- steel strip
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
- C25F1/02—Pickling; Descaling
- C25F1/04—Pickling; Descaling in solution
- C25F1/06—Iron or steel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
613,228. Electrolytic pickling. SWINDIN, N. June 11, 1946, No. 17445. [Class 41] Steel strip is pickled by passage through an acid bath between electrodes connected to a source of alternating current. In the apparatus shown, the strip enters through a gas trap 9 in the domed roof 3, passes under rollers 11 and leaves by a gas-trap 9a. The roof 3 encloses the tank, minimizing heat loss but permitting escape of gases. The electrodes 6, 6a are supported above and below the strip by vertical insulated members at each end, one of which passes through an insulated opening 4 in the dome for connection to a bus-bar. Current density of about 100 amps./sq. ft. at 12-50 volts and frequency 80-100 cycles is employed. The bath may be dilute sulphuric acid of 12-15 per cent with or without hydrochloric acid up to 3 per cent and may be heated. When the strip is heavily scaled it may be first treated in the sulphuric acid bath and then in a hydrochloric acid bath. The baths may be arranged in a series. The strip passes from the acid treatment tanks to neutralizing and cleaning tanks. It is stated in the Provisional Specification that ferrous sulphate may be recovered from the first bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1744546A GB613228A (en) | 1946-06-11 | 1946-06-11 | Improvements in acid pickling tanks more particularly for steel strip mills |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1744546A GB613228A (en) | 1946-06-11 | 1946-06-11 | Improvements in acid pickling tanks more particularly for steel strip mills |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB613228A true GB613228A (en) | 1948-11-24 |
Family
ID=10095306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1744546A Expired GB613228A (en) | 1946-06-11 | 1946-06-11 | Improvements in acid pickling tanks more particularly for steel strip mills |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB613228A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0209168A1 (en) * | 1985-07-12 | 1987-01-21 | N.V. Bekaert S.A. | Process and apparatus for cleaning by electrochemical pickling with alternating current of specified frequency |
| CN115506002A (en) * | 2022-09-19 | 2022-12-23 | 张家港红东设备制造有限公司 | Acid pickling electrode pair, electrode group, electrode device, and acid pickling electrode position adjustment method |
-
1946
- 1946-06-11 GB GB1744546A patent/GB613228A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0209168A1 (en) * | 1985-07-12 | 1987-01-21 | N.V. Bekaert S.A. | Process and apparatus for cleaning by electrochemical pickling with alternating current of specified frequency |
| US4713153A (en) * | 1985-07-12 | 1987-12-15 | N. V. Bekaert S. A. | Process and apparatus for cleaning by electrochemical pickling with alternating current of specified frequency |
| CN115506002A (en) * | 2022-09-19 | 2022-12-23 | 张家港红东设备制造有限公司 | Acid pickling electrode pair, electrode group, electrode device, and acid pickling electrode position adjustment method |
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