GB725193A - Method of making dust cores of high permeability - Google Patents

Method of making dust cores of high permeability

Info

Publication number
GB725193A
GB725193A GB9070/53A GB907053A GB725193A GB 725193 A GB725193 A GB 725193A GB 9070/53 A GB9070/53 A GB 9070/53A GB 907053 A GB907053 A GB 907053A GB 725193 A GB725193 A GB 725193A
Authority
GB
United Kingdom
Prior art keywords
dust cores
high permeability
making dust
lamin
particles
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
GB9070/53A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB725193A publication Critical patent/GB725193A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

In making magnetic dust cores by the method forming the subject of the parent Specification in which hollow spherical particles of iron produced by the oxidized pig-iron process are used, these particles are crushed, preferably by rolling into flat lamin before forming the core. The lamin may be annealed in a neutral or reducing atmosphere to remove both strains and surface dross. The insulation may be a coating of oxide or lacquer.
GB9070/53A 1952-05-30 1953-04-01 Method of making dust cores of high permeability Expired GB725193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE725193X 1952-05-30

Publications (1)

Publication Number Publication Date
GB725193A true GB725193A (en) 1955-03-02

Family

ID=6634887

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9070/53A Expired GB725193A (en) 1952-05-30 1953-04-01 Method of making dust cores of high permeability

Country Status (1)

Country Link
GB (1) GB725193A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873225A (en) * 1957-05-20 1959-02-10 Adams Edmond Magnetic flake core
US2937964A (en) * 1957-07-23 1960-05-24 Adams Edmond Magnetic flake core

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873225A (en) * 1957-05-20 1959-02-10 Adams Edmond Magnetic flake core
US2937964A (en) * 1957-07-23 1960-05-24 Adams Edmond Magnetic flake core

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