GB427745A - Improvements in electro-magnetic devices for use in weak magnetic fields - Google Patents

Improvements in electro-magnetic devices for use in weak magnetic fields

Info

Publication number
GB427745A
GB427745A GB29627/33A GB2962733A GB427745A GB 427745 A GB427745 A GB 427745A GB 29627/33 A GB29627/33 A GB 29627/33A GB 2962733 A GB2962733 A GB 2962733A GB 427745 A GB427745 A GB 427745A
Authority
GB
United Kingdom
Prior art keywords
titanium
cold
electro
stretching
magnetic
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
GB29627/33A
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.)
AEG AG
Original Assignee
Allgemeine Elektricitaets Gesellschaft
AEG 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 Allgemeine Elektricitaets Gesellschaft, AEG AG filed Critical Allgemeine Elektricitaets Gesellschaft
Publication of GB427745A publication Critical patent/GB427745A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

Sheet-metal, wire, or ribbon cores of ferromagnetic material made according to the parent Specification are formed of an iron-nickel alloy to which titanium is added, the material being cold-stretched to produce a reduction in thickness up to 90 per cent or more. Before cold-stretching, the material is cooled in the open or is quenched in water depending upon the percentage of titanium employed, and is then annealed at 350 to 650 DEG C. After cold-stretching, the material is subjected to a further heat treatment at 50 to 300 DEG C. to reduce the hysteresis constant without affecting the instability factor. The titanium may be replaced wholly or in part by beryllium and vanadium.
GB29627/33A 1933-01-13 1933-10-25 Improvements in electro-magnetic devices for use in weak magnetic fields Expired GB427745A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE427745X 1933-01-13

Publications (1)

Publication Number Publication Date
GB427745A true GB427745A (en) 1935-04-25

Family

ID=6477355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29627/33A Expired GB427745A (en) 1933-01-13 1933-10-25 Improvements in electro-magnetic devices for use in weak magnetic fields

Country Status (1)

Country Link
GB (1) GB427745A (en)

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