GB906780A - Porcelain enamelling of ferrous metals - Google Patents
Porcelain enamelling of ferrous metalsInfo
- Publication number
- GB906780A GB906780A GB4386860A GB4386860A GB906780A GB 906780 A GB906780 A GB 906780A GB 4386860 A GB4386860 A GB 4386860A GB 4386860 A GB4386860 A GB 4386860A GB 906780 A GB906780 A GB 906780A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nickel
- porcelain
- acid
- gallon
- moles
- 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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D3/00—Chemical treatment of the metal surfaces prior to coating
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemically Coating (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
In a process for the porcelain enamelling of ferrous metal objects, the objects are (1) pickled for 3-15 minutes at 160-212 DEG F. in an aqueous solution containing 5-20% by weight of citric acid or 1-20% by weight of glycollic acid, together with 0.0012-0.0030 moles/gallon of alkali metal thiosulphate or 0.0018-0.0042 moles/gallon of alkali metal sulphite, (2) coated with nickel, (3) coated with a porcelain enamel slip, (4) dried at 250-400 DEG F., and (5) baked at 1300-1500 DEG F. for 2-6 minutes. The nickel coating is deposited from a nickel sulphate bath preferably maintained at a pH of 2.8-3.6 by the addition of acid. Following the nickel deposition, the object may be neutralized in a solution containing borax and soda-ash. Specification 886,361 is referred to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US51491A US3011907A (en) | 1960-08-24 | 1960-08-24 | Process for treating ferrous metals |
| US51546A US3011906A (en) | 1960-08-24 | 1960-08-24 | Process for treating ferrous metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB906780A true GB906780A (en) | 1962-09-26 |
Family
ID=26729474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4386860A Expired GB906780A (en) | 1960-08-24 | 1960-12-21 | Porcelain enamelling of ferrous metals |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE606215A (en) |
| ES (1) | ES268936A1 (en) |
| GB (1) | GB906780A (en) |
-
1960
- 1960-12-21 GB GB4386860A patent/GB906780A/en not_active Expired
-
1961
- 1961-07-08 ES ES0268936A patent/ES268936A1/en not_active Expired
- 1961-07-17 BE BE606215A patent/BE606215A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES268936A1 (en) | 1961-12-01 |
| BE606215A (en) | 1962-01-17 |
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