EP0255613A3 - Process for manufacturing bipolar or multipolar permanent magnets with a high magnetic energy density - Google Patents

Process for manufacturing bipolar or multipolar permanent magnets with a high magnetic energy density Download PDF

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Publication number
EP0255613A3
EP0255613A3 EP87109822A EP87109822A EP0255613A3 EP 0255613 A3 EP0255613 A3 EP 0255613A3 EP 87109822 A EP87109822 A EP 87109822A EP 87109822 A EP87109822 A EP 87109822A EP 0255613 A3 EP0255613 A3 EP 0255613A3
Authority
EP
European Patent Office
Prior art keywords
permanent magnets
energy density
high magnetic
magnetic energy
multipolar permanent
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.)
Granted
Application number
EP87109822A
Other languages
German (de)
Other versions
EP0255613B1 (en
EP0255613A2 (en
Inventor
Hans E. Ing. Vogt
Valentin Dipl.-Ing. Tanach
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.)
Vogt Electronic AG
Original Assignee
Vogt Electronic 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6306662&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0255613(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Vogt Electronic AG filed Critical Vogt Electronic AG
Publication of EP0255613A2 publication Critical patent/EP0255613A2/en
Publication of EP0255613A3 publication Critical patent/EP0255613A3/en
Application granted granted Critical
Publication of EP0255613B1 publication Critical patent/EP0255613B1/en
Anticipated expiration legal-status Critical
Revoked 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
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • 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
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • 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
    • H01F1/04—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 metals or alloys
    • H01F1/06—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 metals or alloys in the form of particles, e.g. powder
    • H01F1/08—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 metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/083—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 metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together in a bonding agent
    • 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
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
EP19870109822 1986-08-04 1987-07-08 Process for manufacturing bipolar or multipolar permanent magnets with a high magnetic energy density Revoked EP0255613B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3626360 1986-08-04
DE19863626360 DE3626360C2 (en) 1986-08-04 1986-08-04 Manufacturing process for two-pole and multi-pole permanent magnets with high magnetic energy density

Publications (3)

Publication Number Publication Date
EP0255613A2 EP0255613A2 (en) 1988-02-10
EP0255613A3 true EP0255613A3 (en) 1988-07-13
EP0255613B1 EP0255613B1 (en) 1992-05-13

Family

ID=6306662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870109822 Revoked EP0255613B1 (en) 1986-08-04 1987-07-08 Process for manufacturing bipolar or multipolar permanent magnets with a high magnetic energy density

Country Status (2)

Country Link
EP (1) EP0255613B1 (en)
DE (1) DE3626360C2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0331055B1 (en) * 1988-02-29 1994-01-12 Matsushita Electric Industrial Co., Ltd. Methods for producing a resinbonded magnet
US5049053A (en) * 1988-08-18 1991-09-17 Hitachi Metals, Ltd. Metal mold for molding anisotropic permanent magnets
DE4420318C2 (en) * 1994-06-11 1996-04-11 Schulman A Gmbh Polymer-based composition for the production of magnetic and magnetizable moldings
DE4434471C1 (en) * 1994-09-27 1996-03-28 Bosch Gmbh Robert Process for the production of moldings from hard ferrites
DE102008052804A1 (en) * 2008-10-22 2010-04-29 Windhorst Beteiligungsgesellschaft Mbh Magnetic rotary encoder for detection of angle- or rotation of shaft in e.g. household appliance, has front side at which angle sensors are fixedly arranged on rotational axis, where encoder is made of anisotropic hard ferrite
BR112013010024A2 (en) 2010-10-27 2016-08-02 Kraft Foods Global Brands Llc packaging to accommodate product which can be magnetically closed
US20170100862A1 (en) 2015-10-09 2017-04-13 Lexmark International, Inc. Injection-Molded Physical Unclonable Function
US10035095B2 (en) 2016-03-04 2018-07-31 General Electric Company Diverted pulse jet cleaning device and system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1464249A1 (en) * 1963-11-16 1969-02-20 Leyman Corp Process for the production of permanent magnets
US3596350A (en) * 1968-05-08 1971-08-03 Magnetfab Bonn Gmbh Process for the production of permanent magnets from anisotropic permanent magnet powder
DE3120501A1 (en) * 1981-05-22 1982-12-09 MTU Motoren- und Turbinen-Union München GmbH, 8000 München "METHOD AND DEVICE FOR PRODUCING MOLDED PARTS"

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284531B (en) * 1957-04-27 1968-12-05 Baermann Max Method and device for the production of plastic-bonded anisotropic permanent magnets
DE2401934C3 (en) * 1974-01-16 1981-05-14 Fuji Electrochemical Co., Ltd., Tokyo Method of manufacturing an anisotropic ferrite magnet
DE3021607A1 (en) * 1980-06-09 1981-12-17 Philips Patentverwaltung Gmbh, 2000 Hamburg Permanent magnet rotor for electrical machines - esp. bicycle dynamo, using ferrite magnet which is either sintered or bonded with polymer, and is joined to stub axle
DE3047701A1 (en) * 1980-12-18 1982-07-15 Magnetfabrik Bonn Gmbh Vorm. Gewerkschaft Windhorst, 5300 Bonn METHOD FOR PRODUCING ANISOTROPAL PERMANENT MAGNETS AND TUBULAR PERMANENT MAGNETS PRODUCED THEREFORE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1464249A1 (en) * 1963-11-16 1969-02-20 Leyman Corp Process for the production of permanent magnets
US3596350A (en) * 1968-05-08 1971-08-03 Magnetfab Bonn Gmbh Process for the production of permanent magnets from anisotropic permanent magnet powder
DE3120501A1 (en) * 1981-05-22 1982-12-09 MTU Motoren- und Turbinen-Union München GmbH, 8000 München "METHOD AND DEVICE FOR PRODUCING MOLDED PARTS"

Also Published As

Publication number Publication date
DE3626360C2 (en) 1995-06-22
DE3626360A1 (en) 1988-02-11
EP0255613B1 (en) 1992-05-13
EP0255613A2 (en) 1988-02-10

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