GB388634A - Improvements in and relating to methods of making metal to be used in electric discharge or vacuum devices - Google Patents

Improvements in and relating to methods of making metal to be used in electric discharge or vacuum devices

Info

Publication number
GB388634A
GB388634A GB17082/32A GB1708232A GB388634A GB 388634 A GB388634 A GB 388634A GB 17082/32 A GB17082/32 A GB 17082/32A GB 1708232 A GB1708232 A GB 1708232A GB 388634 A GB388634 A GB 388634A
Authority
GB
United Kingdom
Prior art keywords
relating
methods
electric discharge
making metal
vacuum devices
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
GB17082/32A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB388634A publication Critical patent/GB388634A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/006—Pyrometallurgy working up of molten copper, e.g. refining

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

In a method of preparing copper, particularly for use as a portion of an evacuated electric appliance such as a vacuum switch or a water-cooled vacuum tube, silicon and calcium boride are added to the molten copper in such quantity as to leave an excess in the copper. About 0,03 per cent of silicon and 0,55 per cent of calcium boride may be used.
GB17082/32A 1931-07-25 1932-06-16 Improvements in and relating to methods of making metal to be used in electric discharge or vacuum devices Expired GB388634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US388634XA 1931-07-25 1931-07-25

Publications (1)

Publication Number Publication Date
GB388634A true GB388634A (en) 1933-03-02

Family

ID=21902334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17082/32A Expired GB388634A (en) 1931-07-25 1932-06-16 Improvements in and relating to methods of making metal to be used in electric discharge or vacuum devices

Country Status (1)

Country Link
GB (1) GB388634A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3656500A1 (en) * 2018-11-21 2020-05-27 Siemens Aktiengesellschaft Laser welding and laser-additive processing of pure copper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3656500A1 (en) * 2018-11-21 2020-05-27 Siemens Aktiengesellschaft Laser welding and laser-additive processing of pure copper

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