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GB866429A - Improvements in or relating to magnetic cores - Google Patents

Improvements in or relating to magnetic cores

Info

Publication number
GB866429A
GB866429A GB477/57A GB47757A GB866429A GB 866429 A GB866429 A GB 866429A GB 477/57 A GB477/57 A GB 477/57A GB 47757 A GB47757 A GB 47757A GB 866429 A GB866429 A GB 866429A
Authority
GB
United Kingdom
Prior art keywords
strip
wound
alloy
hours
core
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
GB477/57A
Inventor
Arnold Charles Lynch
Kenneth Reginald Wilderspin
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB477/57A priority Critical patent/GB866429A/en
Publication of GB866429A publication Critical patent/GB866429A/en
Priority to US357514A priority patent/US3225421A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
    • Y10T29/49078—Laminated

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

A core for a magnetic switch comprises ferromagnetic material in the form of strip or laminae having a thckness less than 0.001 inch and consisting of an alloy of composition within the following range in per cent by weight: Ni 70-90; Mo 7-16; Fe if any the remainder. Powdered Ni, Mo and Fe are mixed and compressed at a pressure of about 30 tons/in2 to form a block and then sintered at 1300 DEG C. for 5 hours. The block is rolled down to strip form with intermediate annealing treatments. The strip may be wound on a ceramic bobbin and heat treated at above 700 DEG C., e.g. 1050 DEG C. for 3 hours and cooled at about 100 DEG C. per hour. Alternatively the heat treatment may be in the range 400/650 DEG C. In a further modification the core is formed of superimposed straight strips of the alloy, heat treated and mounted in a paper tube on which copper wire is wound. The Provisional Specification describes also the use of alloys in which the Mo is present in a proportion over 5%.
GB477/57A 1957-01-04 1957-01-04 Improvements in or relating to magnetic cores Expired GB866429A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB477/57A GB866429A (en) 1957-01-04 1957-01-04 Improvements in or relating to magnetic cores
US357514A US3225421A (en) 1957-01-04 1964-04-15 Method of making a magnetic core for a magnetic switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB477/57A GB866429A (en) 1957-01-04 1957-01-04 Improvements in or relating to magnetic cores

Publications (1)

Publication Number Publication Date
GB866429A true GB866429A (en) 1961-04-26

Family

ID=9705045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB477/57A Expired GB866429A (en) 1957-01-04 1957-01-04 Improvements in or relating to magnetic cores

Country Status (2)

Country Link
US (1) US3225421A (en)
GB (1) GB866429A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274888A (en) 1977-10-01 1981-06-23 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Magnetic cores

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112251648B (en) * 2020-09-29 2022-02-11 绵阳西磁科技有限公司 High-permeability low-loss FeNiMo magnetic powder core and preparation method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1768443A (en) * 1930-06-24 Percent molybdenum
NL73910C (en) *
US1924245A (en) * 1930-07-04 1933-08-29 Vereinigte Stahlwerke Ag Process for improving nickel-molybdenum alloys
US2158132A (en) * 1938-02-17 1939-05-16 Bell Telephone Labor Inc Magnet body and process of making the same
US2360939A (en) * 1942-10-21 1944-10-24 Western Electric Co Magnetic materials
US2783170A (en) * 1956-04-19 1957-02-26 Armco Steel Corp Magnetic material and process of making it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274888A (en) 1977-10-01 1981-06-23 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Magnetic cores

Also Published As

Publication number Publication date
US3225421A (en) 1965-12-28

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