GB878673A - Improved alkali baths for metal treatment - Google Patents

Improved alkali baths for metal treatment

Info

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
Application number
GB3258/57A
Inventor
Richard Elliott Shaw
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3258/57A priority Critical patent/GB878673A/en
Priority to US711111A priority patent/US2987426A/en
Publication of GB878673A publication Critical patent/GB878673A/en
Expired legal-status Critical Current

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.
GB3258/57A 1957-01-30 1957-01-30 Improved alkali baths for metal treatment Expired GB878673A (en)

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)

* Cited by examiner, † Cited by third party
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
WO1985001069A1 (en) * 1983-09-08 1985-03-14 Georg Von Bormann Process, plant and/or device for preparing oil-coated scales or similar materials

Family Cites Families (10)

* Cited by examiner, † Cited by third party
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
BE522015A (en) * 1952-08-14
US2796361A (en) * 1953-04-15 1957-06-18 Poor & Co Method of making corrosion protected articles

Also Published As

Publication number Publication date
US2987426A (en) 1961-06-06

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