GB604379A - Process for the treatment of sheet iron - Google Patents
Process for the treatment of sheet ironInfo
- Publication number
- GB604379A GB604379A GB25562/45A GB2556245A GB604379A GB 604379 A GB604379 A GB 604379A GB 25562/45 A GB25562/45 A GB 25562/45A GB 2556245 A GB2556245 A GB 2556245A GB 604379 A GB604379 A GB 604379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- parts
- acid
- metal
- per cent
- washing
- 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
- C23G1/085—Iron or steel solutions containing HNO3
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
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)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Detergent Compositions (AREA)
Abstract
In a process of treating sheet iron to obtain a clean metallic surface, the metal is immersed for 5 to 30 minutes in an acid bath composed of 3 to 9 parts by weight of nitric acid, 31 to 33 parts of hydrochloric acid, 10 to 20 parts of sulphuric acid, 8 to 12 parts of hydrogen sulphide, 1 to 7 parts of acetic acid, and 2 to 9 parts of bitriphosphate of potassium in 100 parts by weight of water. The surface may then be neutralized in an alkaline bath consisting of an aqueous solution containing 3 to 10 per cent caustic soda, 2-8 per cent caustic potash and 3-15 per cent of ammonium hydrate and immersion may be for 2 to 6 minutes followed by washing. The metal is then suitable for varnishing, tinning or galvanising but if this operation is not being carried out within a short time the metal may be given a further treatment in a silicate solution of pH value 8-12 at 75 DEG to 100 DEG C. The silicate protection may be removed by washing in warm water.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH604379X | 1945-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB604379A true GB604379A (en) | 1948-07-02 |
Family
ID=4522941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25562/45A Expired GB604379A (en) | 1945-02-23 | 1945-10-02 | Process for the treatment of sheet iron |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2455411A (en) |
| BE (1) | BE460366A (en) |
| FR (1) | FR911200A (en) |
| GB (1) | GB604379A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2207442A (en) * | 1987-07-09 | 1989-02-01 | Inco Alloys Int | Method for surface activation of water atomized powders by pickling prior to compacting |
| US4960459A (en) * | 1987-07-09 | 1990-10-02 | Inco Alloys International, Inc. | Method for surface activation of water atomized powders by pickling |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2873256A (en) * | 1955-05-05 | 1959-02-10 | Aris P Saris | Rust eradicator and method of using same |
| US3033710A (en) * | 1957-03-12 | 1962-05-08 | Branson Instr | Method of surface cleaning using ultrasonic energy |
| FR2560893B1 (en) * | 1984-03-09 | 1986-09-12 | Snecma | CHEMICAL STRIPPING BATH FOR HOT-RESISTANT ALLOY PARTS |
-
0
- BE BE460366D patent/BE460366A/xx unknown
-
1945
- 1945-06-01 FR FR911200D patent/FR911200A/en not_active Expired
- 1945-09-19 US US617439A patent/US2455411A/en not_active Expired - Lifetime
- 1945-10-02 GB GB25562/45A patent/GB604379A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2207442A (en) * | 1987-07-09 | 1989-02-01 | Inco Alloys Int | Method for surface activation of water atomized powders by pickling prior to compacting |
| US4960459A (en) * | 1987-07-09 | 1990-10-02 | Inco Alloys International, Inc. | Method for surface activation of water atomized powders by pickling |
| GB2207442B (en) * | 1987-07-09 | 1991-06-19 | Inco Alloys Int | Method for surface activation of water atomized powders |
Also Published As
| Publication number | Publication date |
|---|---|
| FR911200A (en) | 1946-07-01 |
| BE460366A (en) | |
| US2455411A (en) | 1948-12-07 |
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