GB878673A - Improved alkali baths for metal treatment - Google Patents
Improved alkali baths for metal treatmentInfo
- Publication number
- GB878673A GB878673A GB3258/57A GB325857A GB878673A GB 878673 A GB878673 A GB 878673A GB 3258/57 A GB3258/57 A GB 3258/57A GB 325857 A GB325857 A GB 325857A GB 878673 A GB878673 A GB 878673A
- Authority
- GB
- United Kingdom
- Prior art keywords
- baths
- alkali
- hydrocarbon
- hot
- alkalis
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/16—Preventing evaporation or oxidation of non-metallic liquids by applying a floating layer, e.g. of microballoons
-
- 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
- C23C22/73—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 characterised by the process
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/32—Alkaline compositions
-
- 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
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Treatment Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
Abstract
Metals, such as steel, aluminium and zinc and their alloys, are cleaned or etched by immersion in aqueous alkali having a layer of liquid saturated hydrocarbon floating on its surface. The alkali and hydrocarbon may contain a surface-active agent, e.g. an ethylene oxide/fatty alcohol condensation product or a secondary alkyl sulphate. Specified alkalis are sodium hydroxide, orthosilicate, carbonate and chromate. Since the hydrocarbon reduces fuming of hot alkali baths, it is advantageously dyed to give warning that the baths are hot. Concentrates suitable, on dilution with water, for making up the baths are disclosed.ALSO:Metals, such as steel, aluminium and zinc and their alloys, are cleaned or etched by immersion in aqueous alkali having a layer of liquid saturated hydrocarbon floating on its surface. The alkali and hydrocarbon may contain a surface-active agent, and since the hydrocarbon reduces fuming of hot alkali baths, it is advantageously dyed to give warning that the baths are hot. Specified alkalis are sodium hydroxide, orthosilicate, carbonate and chromate. Concentrates suitable, on dilution with water, for making up the baths are disclosed.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3258/57A GB878673A (en) | 1957-01-30 | 1957-01-30 | Improved alkali baths for metal treatment |
US711111A US2987426A (en) | 1957-01-30 | 1958-01-27 | Alkali baths for metal treatment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3258/57A GB878673A (en) | 1957-01-30 | 1957-01-30 | Improved alkali baths for metal treatment |
Publications (1)
Publication Number | Publication Date |
---|---|
GB878673A true GB878673A (en) | 1961-10-04 |
Family
ID=9754939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3258/57A Expired GB878673A (en) | 1957-01-30 | 1957-01-30 | Improved alkali baths for metal treatment |
Country Status (2)
Country | Link |
---|---|
US (1) | US2987426A (en) |
GB (1) | GB878673A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3287179A (en) * | 1963-01-04 | 1966-11-22 | Frank Theodore | Process for preparing aluminum surfaces prior to plating |
US3402075A (en) * | 1963-04-08 | 1968-09-17 | Lever Brothers Ltd | Ultrasonic washing |
US3281341A (en) * | 1963-04-18 | 1966-10-25 | United States Steel Corp | Method of improving solderability of tin plate |
US3293148A (en) * | 1964-02-27 | 1966-12-20 | Hooker Chemical Corp | Method of cleaning steel surfaces |
US3511707A (en) * | 1967-05-08 | 1970-05-12 | North American Detergent Corp | Method of cleaning a stone surface and composition therefor |
US3617039A (en) * | 1968-04-26 | 1971-11-02 | Mitsubishi Heavy Ind Ltd | Descaling apparatus for steel |
US4028205A (en) * | 1975-09-29 | 1977-06-07 | Kaiser Aluminum & Chemical Corporation | Surface treatment of aluminum |
US4113520A (en) * | 1976-08-13 | 1978-09-12 | Kaiser Aluminum & Chemical Corporation | Method of forming an aluminum oxide coating |
EP0157805B1 (en) * | 1983-09-08 | 1989-08-02 | von Bormann, Georg | Process, plant and/or device for preparing oil-coated scales or similar materials |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US585355A (en) * | 1897-06-29 | Charles anthony burghardt and gilbert rigg | ||
GB270514A (en) * | 1926-06-22 | 1927-05-12 | Felix Warlimont | Method of preventing the evaporation and oxidation of heated electrolytes |
US1838633A (en) * | 1929-08-10 | 1931-12-29 | Pacz Aladar | Coloring aluminum alloys |
FR856526A (en) * | 1939-03-03 | 1940-06-17 | Improvements in metal phosphating processes | |
DE712877C (en) * | 1939-03-11 | 1941-10-27 | Bosch Gmbh Robert | Process for the production of black-colored, corrosion-resistant protective layers on the surface of objects made of aluminum or aluminum alloys |
US2227945A (en) * | 1939-05-08 | 1941-01-07 | Howard R Neilson | Material and method for coating metals |
US2250473A (en) * | 1940-05-24 | 1941-07-29 | Dow Chemical Co | Coating magnesium articles |
US2493327A (en) * | 1946-09-27 | 1950-01-03 | Kelite Products Inc | Aqueous composition for treating iron and steel |
NL87627C (en) * | 1952-08-14 | |||
US2796361A (en) * | 1953-04-15 | 1957-06-18 | Poor & Co | Method of making corrosion protected articles |
-
1957
- 1957-01-30 GB GB3258/57A patent/GB878673A/en not_active Expired
-
1958
- 1958-01-27 US US711111A patent/US2987426A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2987426A (en) | 1961-06-06 |
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