GB886361A - Metal treatment - Google Patents
Metal treatmentInfo
- Publication number
- GB886361A GB886361A GB32850/59A GB3285059A GB886361A GB 886361 A GB886361 A GB 886361A GB 32850/59 A GB32850/59 A GB 32850/59A GB 3285059 A GB3285059 A GB 3285059A GB 886361 A GB886361 A GB 886361A
- Authority
- GB
- United Kingdom
- Prior art keywords
- citric
- nickel
- glycolic acid
- minutes
- per square
- 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
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D3/00—Chemical treatment of the metal surfaces prior to coating
-
- 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
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)
Abstract
Ferrous metal surfaces are cleaned with an aqueous solution containing 1-20% citric or glycolic acid at 160-212 DEG F. for 5-30 minutes. Nickel is deposited and then a coating of porcelain enamel which is dried at 250-400 DEG F. and fired for 3-6 minutes at 1300-1550 DEG F. Citric acid pickled surfaces are given a nickel deposit of 0,03-0,1 grams per square foot while those pickled in glycolic acid receive a deposit of 0,12-0,36 grams per square foot, the deposition being performed in a solution of nickel sulphate at a pH of 3,2-3,6. The citric of glycolic acid solution may contain 1-4% of phosphoric acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US886361XA | 1958-10-20 | 1958-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB886361A true GB886361A (en) | 1962-01-03 |
Family
ID=22212517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32850/59A Expired GB886361A (en) | 1958-10-20 | 1959-09-28 | Metal treatment |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1237493A (en) |
| GB (1) | GB886361A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2739396B1 (en) * | 1995-09-28 | 1997-10-24 | Lorraine Laminage | PROCESS FOR PREPARING THE METAL SURFACE OF AN OBJECT, IN PARTICULAR IN STEEL SHEET, FOR ENAMELING IN DIRECT MODE |
| FR2761082B1 (en) | 1997-03-21 | 1999-04-30 | Lorraine Laminage | METHOD FOR PREPARING AN ENAMELLED STEEL SHEET OBJECT IN DIRECT MODE |
-
1959
- 1959-09-28 GB GB32850/59A patent/GB886361A/en not_active Expired
- 1959-10-09 FR FR807153A patent/FR1237493A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1237493A (en) | 1960-07-29 |
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