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GB602056A - Improvements in and relating to sulfuric anodizing - Google Patents

Improvements in and relating to sulfuric anodizing

Info

Publication number
GB602056A
GB602056A GB27505/45A GB2750545A GB602056A GB 602056 A GB602056 A GB 602056A GB 27505/45 A GB27505/45 A GB 27505/45A GB 2750545 A GB2750545 A GB 2750545A GB 602056 A GB602056 A GB 602056A
Authority
GB
United Kingdom
Prior art keywords
articles
ozs
electrodes
minutes
alternating current
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
GB27505/45A
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.)
Jack and Heintz Inc
Original Assignee
Jack and Heintz Inc
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 Jack and Heintz Inc filed Critical Jack and Heintz Inc
Publication of GB602056A publication Critical patent/GB602056A/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)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

602,056. Electrolytic surface treatment of aluminium articles. JACK & HEINTZ, Inc. Oct. 19, 1945, No. 27505. Convention date, Nov. 9, 1944. [Class 41] A method of forming a protective film on aluminium articles comprises immersing the articles in a circulating solution consisting of 13.4 ozs. sulphuric acid and 13.4 ozs. manganous sulphate per U.S.A. gallon of water at a temperature of from 85‹ to 95‹ F., connecting the articles in an alternating current circuit on the solution, subsequently rinsing the articles in an ammonia rinse followed by a cold water rinse, and sealing the articles in a sodium bichromate solution. The current density is from 25 to 50 amperes per square foot. Preferably the articles are suspended between electrodes in a three-wire alternating current circuit, the voltage between electrodes being from 22 to 30 volts. The articles remain in the electrolyte from 12 to 20 minutes, and in the sealing tank from 15 to 20 minutes, the temperature in the sealing tank being from 208‹ to 212‹ F.
GB27505/45A 1944-11-09 1945-10-19 Improvements in and relating to sulfuric anodizing Expired GB602056A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US602056XA 1944-11-09 1944-11-09

Publications (1)

Publication Number Publication Date
GB602056A true GB602056A (en) 1948-05-19

Family

ID=22028018

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27505/45A Expired GB602056A (en) 1944-11-09 1945-10-19 Improvements in and relating to sulfuric anodizing

Country Status (1)

Country Link
GB (1) GB602056A (en)

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