GB1079646A - Improvements in or relating to chromium plating - Google Patents
Improvements in or relating to chromium platingInfo
- Publication number
- GB1079646A GB1079646A GB31366/64A GB3136664A GB1079646A GB 1079646 A GB1079646 A GB 1079646A GB 31366/64 A GB31366/64 A GB 31366/64A GB 3136664 A GB3136664 A GB 3136664A GB 1079646 A GB1079646 A GB 1079646A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cro3
- sif6
- sulphate
- proportion
- ratio
- 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
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
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)
- Electroplating Methods And Accessories (AREA)
Abstract
Bright chromium plate is electrodeposited on a cathode, e.g nickel-plated brass panels, at a rate of at least 1.25 microns per minute from a plating bath containing chromic acid and sulphate with optional complex fluorides such as silicofluorides, fluo-aluminates, -zirconates and -titanates, wherein the CrO3 concentration is 100-400 g/1, the ratio CrO3 to (SO4-+SiF6-) is 25-100, the proportion SiF6-: SO4- is 0-4, and the temperature is 27-94 DEG C., at least two of these four variables being within the more specific limits CrO3 150-250 g/1, ratio 25-70, proportion 0-2 and temperature 60-82 DEG C., and the cathode current density being at least 150 amps/sq. dm. The anode may be of lead and the sulphate may be added as sulphuric acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US300107A US3337430A (en) | 1963-08-05 | 1963-08-05 | Ultrahigh-speed chromium electrodeposition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1079646A true GB1079646A (en) | 1967-08-16 |
Family
ID=23157741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31366/64A Expired GB1079646A (en) | 1963-08-05 | 1964-08-04 | Improvements in or relating to chromium plating |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3337430A (en) |
| JP (1) | JPS4927017B1 (en) |
| DE (1) | DE1496903B2 (en) |
| GB (1) | GB1079646A (en) |
| NL (1) | NL6408934A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1521040B2 (en) * | 1964-10-28 | 1971-11-11 | Alfred Teves Gmbh, 6000 Frankfurt | PROCESS FOR GALVANIC SOFT CHROMING OF METAL OBJECTS, IN PARTICULAR CAST IRON |
| US3498892A (en) * | 1966-05-04 | 1970-03-03 | M & T Chemicals Inc | Electrodeposition of chromium upon a continuous metal strip |
| JPS5339822U (en) * | 1976-09-10 | 1978-04-06 | ||
| CN103122470B (en) * | 2011-11-17 | 2015-12-09 | 符士正 | Automobile cast iron die plating solution |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1942469A (en) * | 1931-10-03 | 1934-01-09 | Timken Axle Co Detroit | Chromium plating |
| US2950234A (en) * | 1958-02-26 | 1960-08-23 | Metal & Thermit Corp | Chromium plating process and bath |
| US2952590A (en) * | 1959-08-14 | 1960-09-13 | Metal & Thermit Corp | Process for chromium plating |
| US3108933A (en) * | 1961-02-28 | 1963-10-29 | M & T Chemicals Inc | Process and composition for chromium plating |
-
1963
- 1963-08-05 US US300107A patent/US3337430A/en not_active Expired - Lifetime
-
1964
- 1964-08-04 NL NL6408934A patent/NL6408934A/xx unknown
- 1964-08-04 GB GB31366/64A patent/GB1079646A/en not_active Expired
- 1964-08-05 DE DE1964M0062006 patent/DE1496903B2/en active Granted
- 1964-08-05 JP JP39044781A patent/JPS4927017B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3337430A (en) | 1967-08-22 |
| DE1496903A1 (en) | 1969-08-14 |
| JPS4927017B1 (en) | 1974-07-13 |
| DE1496903B2 (en) | 1976-10-21 |
| NL6408934A (en) | 1965-02-08 |
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