GB429426A - 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
GB429426A
GB429426A GB29628/33A GB2962833A GB429426A GB 429426 A GB429426 A GB 429426A GB 29628/33 A GB29628/33 A GB 29628/33A GB 2962833 A GB2962833 A GB 2962833A GB 429426 A GB429426 A GB 429426A
Authority
GB
United Kingdom
Prior art keywords
per cent
titanium
copper
electro
subsequent
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
GB29628/33A
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 GB429426A publication Critical patent/GB429426A/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)
  • Soft Magnetic Materials (AREA)

Abstract

Magnetically stable materials for telegraphy and telephony purposes are produced by alloying a basic 40 per cent nickel-60 per cent iron alloy with copper, titanium, vanadium, silicon or beryllium to effect an improvement in respect of separation hardness, the addition of copper being more than 10 per cent, or when titanium is employed more than 1 per cent, the alloys being either rapidly or slowly cooled from a high temperature with or without subsequent annealing, their resulting magnetic instability on continuouscurrent loads being less than 5 per cent with an initial permeability of 25 or over. Examples are given wherein the copper added is 25 per cent, or titanium 3,5 per cent. Hysteresis losses are reduced by a subsequent coldworking of the material in solid mass. Specification 363,697, [Group XXXVI], is referred to.
GB29628/33A 1933-01-14 1933-10-25 Improvements in electro-magnetic devices for use in weak magnetic fields Expired GB429426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE429426X 1933-01-14

Publications (1)

Publication Number Publication Date
GB429426A true GB429426A (en) 1935-05-27

Family

ID=6477605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29628/33A Expired GB429426A (en) 1933-01-14 1933-10-25 Improvements in electro-magnetic devices for use in weak magnetic fields

Country Status (1)

Country Link
GB (1) GB429426A (en)

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