GB750537A - Method of producing permanent magnets - Google Patents

Method of producing permanent magnets

Info

Publication number
GB750537A
GB750537A GB3670/54A GB367054A GB750537A GB 750537 A GB750537 A GB 750537A GB 3670/54 A GB3670/54 A GB 3670/54A GB 367054 A GB367054 A GB 367054A GB 750537 A GB750537 A GB 750537A
Authority
GB
United Kingdom
Prior art keywords
magnetic
binding agent
mould
compressed
magnetic field
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
GB3670/54A
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.)
Max Baermann GmbH
Original Assignee
Max Baermann GmbH
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 Max Baermann GmbH filed Critical Max Baermann GmbH
Publication of GB750537A publication Critical patent/GB750537A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • 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
    • H01F1/032—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 hard-magnetic materials
    • H01F1/10—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 hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—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 hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • H01F1/113—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 hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent
    • 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
    • H01F41/0253—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 for manufacturing permanent magnets
    • H01F41/0273—Imparting anisotropy

Abstract

A pulverulent mixture of magnetic material and a binding agent is sprinkled into a mould whilst under the influence of a magnetic field directed so as to correspond to the direction of flux in the finished magnet and is there compressed, at right angles to said direction, to form a coherent body. The mould may be filled in layers, each layer being compressed before further filling. The moulded body may be a "tablet", several of which are stacked with their magnetic directions in alignment, heated and finally pressed. The magnetic material may be Al-Ni or Al-Ni-Co alloys, and magnetic oxides as of iron, barium or manganese and the particle size less than 0.1m . Metallic oxides may be subjected to heat treatment in a magnetic field before, or during, mixing with the binding agent, which may be of synthetic resin.
GB3670/54A 1953-02-06 1954-02-08 Method of producing permanent magnets Expired GB750537A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE329182X 1953-02-06

Publications (1)

Publication Number Publication Date
GB750537A true GB750537A (en) 1956-06-20

Family

ID=6186794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3670/54A Expired GB750537A (en) 1953-02-06 1954-02-08 Method of producing permanent magnets

Country Status (3)

Country Link
CH (1) CH329182A (en)
FR (1) FR1092081A (en)
GB (1) GB750537A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3849213A (en) * 1966-09-01 1974-11-19 M Baermann Method of producing a molded anisotropic permanent magnet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263195B (en) * 1962-04-24 1968-03-14 Magnetfab Bonn Gmbh Process for the production of anisotropic permanent magnets from powdered magnetic material
DE102012208362A1 (en) * 2012-05-18 2013-11-21 Siemens Aktiengesellschaft Process for producing a permanent magnet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3849213A (en) * 1966-09-01 1974-11-19 M Baermann Method of producing a molded anisotropic permanent magnet

Also Published As

Publication number Publication date
FR1092081A (en) 1955-04-18
CH329182A (en) 1958-04-15

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