GB1054875A - - Google Patents

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Publication number
GB1054875A
GB1054875A GB1054875DA GB1054875A GB 1054875 A GB1054875 A GB 1054875A GB 1054875D A GB1054875D A GB 1054875DA GB 1054875 A GB1054875 A GB 1054875A
Authority
GB
United Kingdom
Prior art keywords
electrodes
silver
april
oxygen
quenched
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.)
Active
Application number
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.)
Publication of GB1054875A publication Critical patent/GB1054875A/en
Active 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
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/10—Electrodes, e.g. composition, counter electrode
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon

Abstract

1,054,875. Making electrodes. JOHNSON, MATTHEY & CO. Ltd. April 5, 1965 [April 9, 1964], No. 14702/64. Heading B3A. [Also in Division C7] In the manufacture of silver electrolytic anodes, silver of about 99À98% purity is melted under a carbon cover and stirred with a graphite rod to remove as far as possible any oxygen. The molten silver, at 1090‹ C., is poured into a continuous casting machine forming billets which are rapidly water quenched, cut to size and formed into electrodes. The electrodes are annealed in an inert atmosphere to effect homogenization of the crystals at temperature within the range of 400-950‹ C. for a period of 2-16 hours and cooled below 200‹ C., before being exposed in air and quenched in water. The electrodes are thus formed substantially free from oxygen and with homogeneous crystals thereby substantially reducing the tendency for coarse or fine powdered silver from falling away from the anode during plating operations &c. The electrodes may alternatively be formed by extrusion.
GB1054875D 1964-04-09 Active GB1054875A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1470264 1964-04-09

Publications (1)

Publication Number Publication Date
GB1054875A true GB1054875A (en)

Family

ID=10046032

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1054875D Active GB1054875A (en) 1964-04-09

Country Status (4)

Country Link
US (1) US3331709A (en)
BE (1) BE662304A (en)
DE (1) DE1285826B (en)
GB (1) GB1054875A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5578177A (en) * 1994-02-01 1996-11-26 Rfe Industries, Inc. Method of manufacturing fully annealed metal anodes
CN108085630A (en) * 2018-01-11 2018-05-29 广州优妮凯珠宝有限公司 A kind of preparation method of silver jeweleries

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB769193A (en) * 1951-09-21 1957-02-27 Standard Telephones Cables Ltd Method of treating silver alloy electrode surfaces
US2802782A (en) * 1956-08-08 1957-08-13 American Platinum Works Anode

Also Published As

Publication number Publication date
BE662304A (en) 1965-08-02
DE1285826B (en) 1968-12-19
US3331709A (en) 1967-07-18

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