GB916454A - Composition and method for cleaning aluminium - Google Patents

Composition and method for cleaning aluminium

Info

Publication number
GB916454A
GB916454A GB28746/61A GB2874661A GB916454A GB 916454 A GB916454 A GB 916454A GB 28746/61 A GB28746/61 A GB 28746/61A GB 2874661 A GB2874661 A GB 2874661A GB 916454 A GB916454 A GB 916454A
Authority
GB
United Kingdom
Prior art keywords
weight
added
hexavalent chromium
aluminium
hno3
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
GB28746/61A
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.)
Conversion Chemical Corp
Original Assignee
Conversion Chemical Corp
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 Conversion Chemical Corp filed Critical Conversion Chemical Corp
Publication of GB916454A publication Critical patent/GB916454A/en
Expired legal-status Critical Current

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
    • C23G1/12—Light metals
    • C23G1/125—Light metals aluminium

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)
  • Detergent Compositions (AREA)

Abstract

A pickling bath for aluminium or aluminium base alloys comprises 1-45% by weight HF, 30-99% by weight HNO3, 0.05-10% by weight hexavalent chromium and not more than 50% by weight water. The HF may be added as such or as ammonium acid fluoride NH4HF2 and the hexavalent chromium is added as chromic acid, chromic acid anhydride, or chromates and bichromates of sodium and potassium. Sulphuric acid, up to 10% by volume of the HNO3 content may be added and the solution is maintained at 60-130 DEG F. during the pickling process. The bath may be regenerated by adding fluoride and hexavalent chromium in an amount equal to 25% of the original concentration.
GB28746/61A 1960-10-05 1961-08-09 Composition and method for cleaning aluminium Expired GB916454A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60568A US3197340A (en) 1960-10-05 1960-10-05 Composition and method for cleaning aluminum castings

Publications (1)

Publication Number Publication Date
GB916454A true GB916454A (en) 1963-01-23

Family

ID=22030328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28746/61A Expired GB916454A (en) 1960-10-05 1961-08-09 Composition and method for cleaning aluminium

Country Status (3)

Country Link
US (1) US3197340A (en)
DE (1) DE1291169C2 (en)
GB (1) GB916454A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367799A (en) * 1963-10-08 1968-02-06 Army Usa Process for cleaning aluminum
FR2043646A1 (en) * 1969-05-24 1971-02-19 Parker Ste Continentale
US4281420A (en) * 1979-02-15 1981-08-04 Raab S Bone connective prostheses adapted to maximize strength and durability of prostheses-bone cement interface; and methods of forming same
US4365359A (en) * 1979-02-15 1982-12-28 Raab S PMMA Coated bone connective prostheses and method of forming same
US5276998A (en) * 1992-06-08 1994-01-11 Joen Anton P Method and apparatus for washing and cleaning a workpiece
WO2003034937A2 (en) * 2001-10-24 2003-05-01 Raab S Bone connective prosthesis and method of forming same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2593447A (en) * 1949-06-27 1952-04-22 Permanente Metals Corp Method and composition for treating aluminum and aluminum alloys
US2593448A (en) * 1949-07-25 1952-04-22 Kaiser Aluminium Chem Corp Method and composition for treating aluminum and aluminum alloys
US2904413A (en) * 1954-06-23 1959-09-15 Jervis Corp Process of bright dipping zinc base alloys
US2828193A (en) * 1954-08-09 1958-03-25 Turco Products Inc Method for rejuvenation of aluminum treating solutions
US2883311A (en) * 1956-10-01 1959-04-21 Vertol Aircraft Corp Method and composition for treating aluminum and aluminum alloys

Also Published As

Publication number Publication date
US3197340A (en) 1965-07-27
DE1291169B (en) 1969-03-20
DE1291169C2 (en) 1977-06-08

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