GB1447264A - Polymer bonded magnets - Google Patents

Polymer bonded magnets

Info

Publication number
GB1447264A
GB1447264A GB5277773A GB5277773A GB1447264A GB 1447264 A GB1447264 A GB 1447264A GB 5277773 A GB5277773 A GB 5277773A GB 5277773 A GB5277773 A GB 5277773A GB 1447264 A GB1447264 A GB 1447264A
Authority
GB
United Kingdom
Prior art keywords
magnetic
coil
alloy
binder
nov
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
GB5277773A
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.)
MAGNETIC POLYMERS Ltd
Original Assignee
MAGNETIC POLYMERS Ltd
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 MAGNETIC POLYMERS Ltd filed Critical MAGNETIC POLYMERS Ltd
Priority to GB5277773A priority Critical patent/GB1447264A/en
Publication of GB1447264A publication Critical patent/GB1447264A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

1447264 Permanent magnets; magnetization MAGNETIC POLYMERS Ltd 12 Nov 1974 [14 Nov 1973] 52777/73 Heading H1P A permanent magnet is fabricated by finely powdering a magnetizible alloy, e.g. ferrite, alnico, or rare earth alloy; admixing the powder with a plastic synthetic resin binder; and pouring the mixture at 1 into a non-magnetic die 2 with surrounding electromagnetic coils 5, 6; a pulse magnetization and heating coil 7, and pressure rams 3, 4 of magnetic material. Initially the pulverulent material is subjected to a pulsed high value magnetic field by energization of coil 7 to saturate and orientate the magnetic particles and then a steady lower intensity field in the same direction from coils 5, 6 while applying high pressure over rams 3, 4. Simultaneously the magnetic powder is heated by RF excitation of coil 7 so as to fuse the plastic binder. Thereafter the coil 7 is deonergized and the compacted magnet is cooled and removed. The alloy may contain samarium, praesodymium, lanthanum, cerium, neodymium and cobalt and the binder may be an epoxy resin.
GB5277773A 1973-11-14 1973-11-14 Polymer bonded magnets Expired GB1447264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5277773A GB1447264A (en) 1973-11-14 1973-11-14 Polymer bonded magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5277773A GB1447264A (en) 1973-11-14 1973-11-14 Polymer bonded magnets

Publications (1)

Publication Number Publication Date
GB1447264A true GB1447264A (en) 1976-08-25

Family

ID=10465261

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5277773A Expired GB1447264A (en) 1973-11-14 1973-11-14 Polymer bonded magnets

Country Status (1)

Country Link
GB (1) GB1447264A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562019A (en) * 1979-02-23 1985-12-31 Inoue-Japax Research Incorporated Method of preparing plastomeric magnetic objects
EP0234476A1 (en) * 1986-02-17 1987-09-02 MITSUI TOATSU CHEMICALS, Inc. Permanent magnet and process for producing the same
GB2314799A (en) * 1996-07-04 1998-01-14 Aichi Steel Works Ltd Production of anisotropic resin-bonded magnets
US6007757A (en) * 1996-01-22 1999-12-28 Aichi Steel Works, Ltd. Method of producing an anisotropic bonded magnet
EP1042130A1 (en) * 1997-06-11 2000-10-11 Securency Pty. Ltd. Security document including a magnetic watermark and method of production thereof
EP2209743A1 (en) * 2007-10-31 2010-07-28 Molycorp Minerals, LLC Aggregate composition for treating a contaminanted fluid
US8252087B2 (en) 2007-10-31 2012-08-28 Molycorp Minerals, Llc Process and apparatus for treating a gas containing a contaminant
US9233863B2 (en) 2011-04-13 2016-01-12 Molycorp Minerals, Llc Rare earth removal of hydrated and hydroxyl species
US9975787B2 (en) 2014-03-07 2018-05-22 Secure Natural Resources Llc Removal of arsenic from aqueous streams with cerium (IV) oxide compositions

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562019A (en) * 1979-02-23 1985-12-31 Inoue-Japax Research Incorporated Method of preparing plastomeric magnetic objects
EP0234476A1 (en) * 1986-02-17 1987-09-02 MITSUI TOATSU CHEMICALS, Inc. Permanent magnet and process for producing the same
US4810572A (en) * 1986-02-17 1989-03-07 Mitsui Toatsu Chemicals, Inc. Permanent magnet and process for producing the same
US6007757A (en) * 1996-01-22 1999-12-28 Aichi Steel Works, Ltd. Method of producing an anisotropic bonded magnet
GB2314799A (en) * 1996-07-04 1998-01-14 Aichi Steel Works Ltd Production of anisotropic resin-bonded magnets
GB2314799B (en) * 1996-07-04 1998-08-12 Aichi Steel Works Ltd Production method for anisotropic resin-bonded magnets
US5886070A (en) * 1996-07-04 1999-03-23 Aichi Steel Works, Ltd. Production method for anisotropic resin-bonded magnets
EP1042130A4 (en) * 1997-06-11 2004-12-15 Securency Pty Ltd Security document including a magnetic watermark and method of production thereof
EP1042130A1 (en) * 1997-06-11 2000-10-11 Securency Pty. Ltd. Security document including a magnetic watermark and method of production thereof
EP2209743A1 (en) * 2007-10-31 2010-07-28 Molycorp Minerals, LLC Aggregate composition for treating a contaminanted fluid
EP2209743A4 (en) * 2007-10-31 2012-02-29 Molycorp Minerals Llc Aggregate composition for treating a contaminanted fluid
US8252087B2 (en) 2007-10-31 2012-08-28 Molycorp Minerals, Llc Process and apparatus for treating a gas containing a contaminant
US8349764B2 (en) 2007-10-31 2013-01-08 Molycorp Minerals, Llc Composition for treating a fluid
US8557730B2 (en) 2007-10-31 2013-10-15 Molycorp Minerals, Llc Composition and process for making the composition
US9233863B2 (en) 2011-04-13 2016-01-12 Molycorp Minerals, Llc Rare earth removal of hydrated and hydroxyl species
US9975787B2 (en) 2014-03-07 2018-05-22 Secure Natural Resources Llc Removal of arsenic from aqueous streams with cerium (IV) oxide compositions
US10577259B2 (en) 2014-03-07 2020-03-03 Secure Natural Resources Llc Removal of arsenic from aqueous streams with cerium (IV) oxide compositions

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19941111