GB398825A - Improvements in the electrolytic production of insulating layers on metals - Google Patents

Improvements in the electrolytic production of insulating layers on metals

Info

Publication number
GB398825A
GB398825A GB131132A GB131132A GB398825A GB 398825 A GB398825 A GB 398825A GB 131132 A GB131132 A GB 131132A GB 131132 A GB131132 A GB 131132A GB 398825 A GB398825 A GB 398825A
Authority
GB
United Kingdom
Prior art keywords
strips
voltage
vessel
electrolytic
stages
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
GB131132A
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.)
Dubilier Condenser Co 1925 Ltd
Original Assignee
Dubilier Condenser Co 1925 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 Dubilier Condenser Co 1925 Ltd filed Critical Dubilier Condenser Co 1925 Ltd
Priority to GB131132A priority Critical patent/GB398825A/en
Publication of GB398825A publication Critical patent/GB398825A/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
    • C25D11/12—Anodising more than once, e.g. in different baths
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D9/00—Electrolytic coating other than with metals
    • C25D9/04—Electrolytic coating other than with metals with inorganic materials
    • C25D9/08—Electrolytic coating other than with metals with inorganic materials by cathodic processes

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 Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Inverter Devices (AREA)

Abstract

398,825. Electrolytic treatment of metallic surfaces. COURSEY, P. R., 67, Queen's Road, Richmond, Surrey, MARCUS, C. H., 15, Stanley Street, Wilkes-BarrÚ, Pennsylvania, U.S.A., and DUBILIER CONDENSER CO. (1925), Ltd., Victoria Road, North Acton, London. Jan. 16, 1932, No. 1311. [Class 41.] Insulating-coatings are produced on aluminium and other metals by electrolytic treatment 'in two stages, the first being conducted at low voltage, for example 20-30 volts, and the second in a different electrolyte at a relatively high voltage, for example, 750-1000 volts. Dilute sulphuric acid may be employed as electrolyte in the first stage and a solution of ammonium borate in the second. In the apparatus shown strips A, B are guided by rollers through a vessel 11 in which they are subjected to alternating current drawn from one secondary winding of a transformer. Strips C, D are passed through a vessel 12 and connected to a similar winding. The midpoints 3, 6 of the two windings are connected through a high-voltage winding 7. By passage of the strips A, C through vessel 13, and of the strips B, D through a vessel 14 all of the strips are subjected to high-voltage treatment. The low-voltage and high-voltage treatments may each be performed in two or more stages employing different voltages and electrolytes by suitably increasing the number of strips treated. In one or other of the stages direct current, may be employed, chokes and condensers being connected to separate the two circuits. Washing or other treating baths may be provided before, between and after the electrolytic baths. The coated articles may be used in the production of electrolytic or other electric condensers and insulated coils.
GB131132A 1932-01-16 1932-01-16 Improvements in the electrolytic production of insulating layers on metals Expired GB398825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB131132A GB398825A (en) 1932-01-16 1932-01-16 Improvements in the electrolytic production of insulating layers on metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB131132A GB398825A (en) 1932-01-16 1932-01-16 Improvements in the electrolytic production of insulating layers on metals

Publications (1)

Publication Number Publication Date
GB398825A true GB398825A (en) 1933-09-18

Family

ID=9719778

Family Applications (1)

Application Number Title Priority Date Filing Date
GB131132A Expired GB398825A (en) 1932-01-16 1932-01-16 Improvements in the electrolytic production of insulating layers on metals

Country Status (1)

Country Link
GB (1) GB398825A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4582574A (en) * 1985-08-15 1986-04-15 Sprague Electric Company Preparation of capacitor electrodes
US20140008236A1 (en) * 2012-07-04 2014-01-09 Universite De Lorraine Anodization treatment method for aluminum alloys containing cooper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4582574A (en) * 1985-08-15 1986-04-15 Sprague Electric Company Preparation of capacitor electrodes
US20140008236A1 (en) * 2012-07-04 2014-01-09 Universite De Lorraine Anodization treatment method for aluminum alloys containing cooper

Similar Documents

Publication Publication Date Title
KR840000101A (en) Cross-flow conversion system with AC line high frequency attenuation
US2541275A (en) Apparatus for the electrolytic oxidation of metallic elements
US1877569A (en) Electromagnetic apparatus
GB398825A (en) Improvements in the electrolytic production of insulating layers on metals
GB236350A (en) Means for introducing capacity effects in alternating electric current systems and apparatus
GB387437A (en) Process of manufacture of thin solid films, insulating and having a high dielectric strength
GB495921A (en) Improvements in or relating to electric transformers
GB237593A (en)
US1963049A (en) Electrolytic cell and part thereof and method of making the same
GB452396A (en) Improvements in and relating to electric condensers of the wound type
US1915984A (en) Manufacture of copper oxide rectifiers
US1068413A (en) Method of and apparatus for coating wires and cables.
GB376869A (en) Improvements in or relating to methods of and apparatus for deriving power from high-voltage lines
US1896468A (en) Alternating current rectifying system
DE484464C (en) Electrical transformer, especially for electron tube amplifiers
AT138854B (en) Device for the remote transmission of measured quantities on electrical lines.
AT125203B (en) Process for the production of transformer sheets from electrolyte iron with insulating cover layers.
DE509283C (en) Rotating rectifier, the fixed electrode of which is arranged within an electrolyte through which the rotating electrode moves
GB385582A (en) Improvements in and relating to methods of coating metal with insulating varnishes
DE3917427A1 (en) Aluminium electrolytic capacitor prodn. - involving low temp. pulsed voltage treatment to improve overvoltage resistance
DE469700C (en) Device for converting direct current into other voltage
GB215897A (en) Means for introducing capacity effects in alternating electric current systems and apparatus
DE406112C (en) Device for unipolar high frequency treatment
GB202641A (en) Improvements in or relating to electric leading-in terminals
GB263150A (en)