JPS5669805A - Manufacture of anisotropic plastic magnet - Google Patents

Manufacture of anisotropic plastic magnet

Info

Publication number
JPS5669805A
JPS5669805A JP14585379A JP14585379A JPS5669805A JP S5669805 A JPS5669805 A JP S5669805A JP 14585379 A JP14585379 A JP 14585379A JP 14585379 A JP14585379 A JP 14585379A JP S5669805 A JPS5669805 A JP S5669805A
Authority
JP
Japan
Prior art keywords
magnets
magnetic field
gaps
plastics
rubber
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.)
Pending
Application number
JP14585379A
Other languages
Japanese (ja)
Inventor
Shigeo Sugiura
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP14585379A priority Critical patent/JPS5669805A/en
Publication of JPS5669805A publication Critical patent/JPS5669805A/en
Pending 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
    • H01F1/032—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

Landscapes

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

Abstract

PURPOSE:To obtain multipolar magnets at a low cost when the magnets are to be formed of a high molecular compound like plastics, rubber, etc., and of a ferromagnetic material powder by a method wherein the volume filling rate of the powder against the compound is made to be 45% or more, and the magnets are oriented toward a prescribed direction in the magnetic field generating by permanent magnets being provided in a metal mold. CONSTITUTION:Plural gaps 6 having the form of product are formed in the metal mold 3 of an injection molding machine consisting of stainless steel, etc., and permanent magnets 20 generating magnetic field orienting toward the prescribed direction are buried in the mold on four sides surrounding the gaps. The high molecular compound of plastics, rubber, etc., containing the ferromagnetic material powder being made the volume filling rate to be 45% or more is filled in the gaps 6, and the anisotropic plastic magnets 15 are produced being oriented in the magnetic field generating by the magnets 20. By this way, the multipolar magnets having more than two poles can be produced simply using the small scale equipment to reduce the cost sharply.
JP14585379A 1979-11-10 1979-11-10 Manufacture of anisotropic plastic magnet Pending JPS5669805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14585379A JPS5669805A (en) 1979-11-10 1979-11-10 Manufacture of anisotropic plastic magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14585379A JPS5669805A (en) 1979-11-10 1979-11-10 Manufacture of anisotropic plastic magnet

Publications (1)

Publication Number Publication Date
JPS5669805A true JPS5669805A (en) 1981-06-11

Family

ID=15394593

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14585379A Pending JPS5669805A (en) 1979-11-10 1979-11-10 Manufacture of anisotropic plastic magnet

Country Status (1)

Country Link
JP (1) JPS5669805A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972702A (en) * 1982-10-20 1984-04-24 Tohoku Metal Ind Ltd Molding of magnetic slurry in magnetic field and device thereof
JPS5972703A (en) * 1982-10-20 1984-04-24 Tohoku Metal Ind Ltd Molding device of ferrite slurry in magnetic field
JPS59226367A (en) * 1983-06-08 1984-12-19 Hitachi Metals Ltd Production of anisotropic magnet roll
US4604042A (en) * 1983-06-08 1986-08-05 Hitachi Metals, Inc. Apparatus for producing anisotropic magnets
JPH0391215A (en) * 1989-09-04 1991-04-16 Sumitomo Bakelite Co Ltd Manufacture of anisotropic magnet
JP2003086443A (en) * 2001-09-11 2003-03-20 Sumitomo Special Metals Co Ltd Magnetic-field forming system and powder-forming method
GB2566787A (en) * 2017-07-03 2019-03-27 Fuji Polymer Ind Method and apparatus for producing radially aligned magnetorheological elastomer molded body

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972702A (en) * 1982-10-20 1984-04-24 Tohoku Metal Ind Ltd Molding of magnetic slurry in magnetic field and device thereof
JPS5972703A (en) * 1982-10-20 1984-04-24 Tohoku Metal Ind Ltd Molding device of ferrite slurry in magnetic field
JPS59226367A (en) * 1983-06-08 1984-12-19 Hitachi Metals Ltd Production of anisotropic magnet roll
US4604042A (en) * 1983-06-08 1986-08-05 Hitachi Metals, Inc. Apparatus for producing anisotropic magnets
JPH0259993B2 (en) * 1983-06-08 1990-12-14 Hitachi Metals Ltd
JPH0391215A (en) * 1989-09-04 1991-04-16 Sumitomo Bakelite Co Ltd Manufacture of anisotropic magnet
JP2003086443A (en) * 2001-09-11 2003-03-20 Sumitomo Special Metals Co Ltd Magnetic-field forming system and powder-forming method
GB2566787A (en) * 2017-07-03 2019-03-27 Fuji Polymer Ind Method and apparatus for producing radially aligned magnetorheological elastomer molded body
US10903001B2 (en) 2017-07-03 2021-01-26 Fuji Polymer Industries Co., Ltd. Method and apparatus for producing radially aligned magnetorheological elastomer molded body
GB2566787B (en) * 2017-07-03 2022-04-20 Fuji Polymer Ind Method and apparatus for producing radially aligned magnetorheological elastomer molded body

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