GB743692A - Process for polishing articles of aluminium and aluminium alloys by anodic treatment in an electrolyte - Google Patents

Process for polishing articles of aluminium and aluminium alloys by anodic treatment in an electrolyte

Info

Publication number
GB743692A
GB743692A GB19484/53A GB1948453A GB743692A GB 743692 A GB743692 A GB 743692A GB 19484/53 A GB19484/53 A GB 19484/53A GB 1948453 A GB1948453 A GB 1948453A GB 743692 A GB743692 A GB 743692A
Authority
GB
United Kingdom
Prior art keywords
aluminium
articles
grams
treatment
electrolyte
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
GB19484/53A
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.)
Langbein Pfanhauser Werke AG
Original Assignee
Langbein Pfanhauser Werke AG
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 Langbein Pfanhauser Werke AG filed Critical Langbein Pfanhauser Werke AG
Publication of GB743692A publication Critical patent/GB743692A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/16—Polishing
    • C25F3/18—Polishing of light metals
    • C25F3/20—Polishing of light metals of aluminium

Abstract

743,692. Electrolytic polishing of aluminium. LANGBEIN-PFANHAUSER WERKE AKT.- GES. July 14, 1953 [May 12, 1953], No. 19484/53. Class 41. A process for polishing aluminium and aluminium alloy articles comprises anodic treatment in an aqueous electrolyte containing only 20 to 30 grams of chromic acid and 1200 to 1750 grams of sulphuric acid per litre. The electrolyte preferably contains 25 grams of chromic acid and 1450 grams of sulphuric acid per litre. The temperature is between 50‹ and 100‹ C., the anodic current density is from 25 to 80 amps. per square decimetre, and the voltage is from 8 to 24 volts. The treatment may last from 5 seconds to 6 minutes. A lead cathode is employed separated from the articles by a liquid-tight, acid-proof diaphragm. The articles may first be cleaned with a solvent, such as trichlorethylene, and electrically degreased. After treatment the articles may be anodically oxidized.
GB19484/53A 1953-05-12 1953-07-14 Process for polishing articles of aluminium and aluminium alloys by anodic treatment in an electrolyte Expired GB743692A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL15511A DE1089237B (en) 1953-05-12 1953-05-12 Galvanic bath and process for anodic glazing of objects made of aluminum and aluminum alloys

Publications (1)

Publication Number Publication Date
GB743692A true GB743692A (en) 1956-01-18

Family

ID=7260136

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19484/53A Expired GB743692A (en) 1953-05-12 1953-07-14 Process for polishing articles of aluminium and aluminium alloys by anodic treatment in an electrolyte

Country Status (3)

Country Link
US (1) US2751342A (en)
DE (1) DE1089237B (en)
GB (1) GB743692A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046214A (en) * 1958-09-08 1962-07-24 Chain Anodizers Inc Apparatus for continuously electrolytically treating flexible articles
US3100170A (en) * 1960-01-04 1963-08-06 Dow Chemical Co Pickling magnesium articles
US3100169A (en) * 1960-01-04 1963-08-06 Dow Chemical Co Pickling of magnesium and magnesium-base alloy articles
US3625841A (en) * 1969-03-10 1971-12-07 Kaiser Aluminium Chem Corp Color anodizing in an inorganic electrolyte
US4078980A (en) * 1976-10-01 1978-03-14 National Semiconductor Corporation Electrolytic chromium etching of chromium-layered semiconductor
CN113186589B (en) * 2021-05-10 2022-12-27 哈尔滨工业大学 Electrochemical surface treatment method for selectively laser melting AlSi10Mg alloy heat treatment product

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE671637C (en) * 1937-07-30 1939-02-10 Langbein Pfanhauser Werke Akt Device for the electrolytic glazing of light metals by anodic treatment
NL50030C (en) * 1937-07-30
GB504026A (en) * 1937-09-17 1939-04-17 Harold Robert Priston Improvements in or relating to the polishing of nickel applicable also to the production of decorative or other designs upon the surface
FR945771A (en) * 1947-04-15 1949-05-13 Electrolytic treatment of metal surfaces
US2550544A (en) * 1947-11-14 1951-04-24 Battelle Development Corp Method of anodically polishing aluminum
DE821898C (en) * 1950-02-21 1951-11-22 Ver Deutsche Metallwerke Ag Process for anodic treatment of objects made of aluminum or aluminum alloys
DE825937C (en) * 1950-06-14 1951-12-27 Ver Deutsche Metallwerke Ag Process for anodic glazing of objects made of aluminum and aluminum alloys

Also Published As

Publication number Publication date
US2751342A (en) 1956-06-19
DE1089237B (en) 1960-09-15

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