GB474704A - Improvements in and relating to the electrolytic coating of aluminium or aluminium alloys - Google Patents

Improvements in and relating to the electrolytic coating of aluminium or aluminium alloys

Info

Publication number
GB474704A
GB474704A GB30930/36A GB3093036A GB474704A GB 474704 A GB474704 A GB 474704A GB 30930/36 A GB30930/36 A GB 30930/36A GB 3093036 A GB3093036 A GB 3093036A GB 474704 A GB474704 A GB 474704A
Authority
GB
United Kingdom
Prior art keywords
aluminium
nov
electrolyte
bars
bus
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
GB30930/36A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB474704A publication Critical patent/GB474704A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/024—Anodisation under pulsed or modulated current or potential
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

474,704. Electrolysis. WALES, F. A. Nov. 12, 1936, Nos. 30930 and 30931. Convention dates, Nov. 14, 1935 and Nov. 29, 1935. [Class 41] A protective coating is formed on aluminium or its alloys by utilizing the aluminium as an electrode in a bath containing about 13 per cent by weight of sulphuric acid, alternating current being supplied, first at 9-12À5 volts and then at higher voltages up to 24 at the end of the treatment. The coating formed, e.g. on pistons, may be impregnated with a lubricant, such as graphite dispersed in oil. The process may be effected by suspending the aluminium articles 33 from the bus-bars 32, the electrolyte being contained in a leadlined tank 14. The electrolyte is agitated by air supplied to pipes 21, and its temperature is controlled by supplying a suitable medium to the duct 25. The apparatus includes also a hood and fan for drawing off fumes, a transformer for supplying current at the desired voltage to the bus-bars, and a washing tank.
GB30930/36A 1935-11-14 1936-11-12 Improvements in and relating to the electrolytic coating of aluminium or aluminium alloys Expired GB474704A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49647A US2111377A (en) 1935-11-14 1935-11-14 Art of coating aluminum

Publications (1)

Publication Number Publication Date
GB474704A true GB474704A (en) 1937-11-05

Family

ID=21960926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30930/36A Expired GB474704A (en) 1935-11-14 1936-11-12 Improvements in and relating to the electrolytic coating of aluminium or aluminium alloys

Country Status (2)

Country Link
US (1) US2111377A (en)
GB (1) GB474704A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967919C (en) * 1953-11-19 1957-12-27 Nikolai Budiloff Dr Ing Process for coloring oxidized aluminum and its alloys with inorganic compounds

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439491A (en) * 1942-06-02 1948-04-13 Schiffl Charles Enclosed electroplating tank
US2860018A (en) * 1957-01-10 1958-11-11 Joy Mfg Co Piston assembly
US2918416A (en) * 1958-07-07 1959-12-22 Taylor Paul Hunt Electrolytic process for hard surfacing aluminum
US3020219A (en) * 1959-01-12 1962-02-06 Electralab Printed Electronics Process for producing oxide coatings on high silicon aluminum alloy
JPS5334107B2 (en) * 1974-04-23 1978-09-19
US3983014A (en) * 1974-12-16 1976-09-28 The Scionics Corporation Anodizing means and techniques

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967919C (en) * 1953-11-19 1957-12-27 Nikolai Budiloff Dr Ing Process for coloring oxidized aluminum and its alloys with inorganic compounds

Also Published As

Publication number Publication date
US2111377A (en) 1938-03-15

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