GB509577A - Electro galvanising process for depositing zinc coatings - Google Patents
Electro galvanising process for depositing zinc coatingsInfo
- Publication number
- GB509577A GB509577A GB35037/38A GB3503738A GB509577A GB 509577 A GB509577 A GB 509577A GB 35037/38 A GB35037/38 A GB 35037/38A GB 3503738 A GB3503738 A GB 3503738A GB 509577 A GB509577 A GB 509577A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrolyte
- zinc
- per
- dec
- ammonia
- 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
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/22—Electroplating: Baths therefor from solutions of zinc
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
509,577. Electrodeposition of zinc. HUBBELL, J. P., and WEISBERG, L. Dec. 1, 1938, No. 35037. Convention date, Dec. 1, 1937. [Class 41] Zinc is deposited by electrolysis from a concentrated ammoniacal zinc solution containing free ammonia at a current density of 500- 1,000 amps. per sq. ft. The electrolyte is prepared from low grade ores, raw zinc ash, or sal skimmings by leaching with ammonia and ammonium salts. Chlorides and small quantities of cadmium and copper may be present. Iron is oxidised by hydrogen peroxide and is then filtered off. The electrolyte contains 80-150 g. per litre of zinc and at least 8g. per litre of free ammonia. Insoluble anodes of gas carbon, graphite, or stainless steel are used and the temperature maintained at about 30C. either by cooling means within the cell or by circulating the electrolyte through cooling pipes. Agitation is effected, either by mechanical means, or by drawing wire to be coated through the bath at a speed of at least 120 ft. per minute, sufficient to cause turbulent flow of the electrolyte. Exhausted electrolyte is regenerated by using it to leach fresh zincbearing material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US177464A US2200987A (en) | 1937-12-01 | 1937-12-01 | Electrogalvanizing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB509577A true GB509577A (en) | 1939-07-18 |
Family
ID=22648700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35037/38A Expired GB509577A (en) | 1937-12-01 | 1938-12-01 | Electro galvanising process for depositing zinc coatings |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2200987A (en) |
| GB (1) | GB509577A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2449422A (en) * | 1944-04-15 | 1948-09-14 | Harshaw Chem Corp | Electrodeposition of nickel |
| DE4018649A1 (en) * | 1990-06-11 | 1991-12-12 | Hermann Dipl Chem Dr Clasen | METHOD AND DEVICES FOR ELECTROLYTIC ZINCING |
| AU677963B2 (en) * | 1992-08-26 | 1997-05-15 | Spunboa Pty Ltd | Electrolytic oxidizer |
| DE19506297A1 (en) * | 1995-02-23 | 1996-08-29 | Schloemann Siemag Ag | Process and plant for the regeneration of sulfate electrolyte in steel strip galvanizing |
| IT201900019418A1 (en) * | 2019-10-21 | 2021-04-21 | Engitec Tech S P A | PROCESS TO PRODUCE A ZINC COATED STEEL SUBSTRATE. |
-
1937
- 1937-12-01 US US177464A patent/US2200987A/en not_active Expired - Lifetime
-
1938
- 1938-12-01 GB GB35037/38A patent/GB509577A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2200987A (en) | 1940-05-14 |
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