JPS5664407A - Manufacture of rubber plastic magnet - Google Patents

Manufacture of rubber plastic magnet

Info

Publication number
JPS5664407A
JPS5664407A JP5714180A JP5714180A JPS5664407A JP S5664407 A JPS5664407 A JP S5664407A JP 5714180 A JP5714180 A JP 5714180A JP 5714180 A JP5714180 A JP 5714180A JP S5664407 A JPS5664407 A JP S5664407A
Authority
JP
Japan
Prior art keywords
powder
approx
pulverized
bite
mixture
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
JP5714180A
Other languages
Japanese (ja)
Inventor
Takeo Tada
Katsushi Honda
Masami Oguriyama
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
Priority claimed from US06/089,646 external-priority patent/US4308155A/en
Application filed by TDK Corp filed Critical TDK Corp
Publication of JPS5664407A publication Critical patent/JPS5664407A/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
    • H01F1/117—Flexible bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE:To readily manufacture a rubber plastic magnet having excellent magnetic characteristics by treating specific metals under specific condition and pulverizing the treated metals. CONSTITUTION:Water is added and kneaded to a mixture of iron oxide (Fe2O3) containing substantially no impurity and barium, strontium or lead compound as carbonate, the mixture is then calcined at a temperature higher than approx. 2,000 deg.C and a sintered magnet bite is thus produced. This sintered bite is roughly pulverized, approx. 0.1-10wt% of 1-3C lower alcohol is added to the pulverized sintered bite with the roughly pulverized powder as a reference, the mixture is further pulverized by a ball mill or the like, and finely pulverized powder having approx. 1.00-1.50m of average particle diameter measured by a Fisher subsieve sizing for the powder and approx. 3.30-3.55g/cm<3> of compression density compressed by the pressure of 1ton/cm<2> is obtained. The powder is moreover annealed at raised temperature, thereby equalizing the finely pulverized particle size. This finely pulverized powder is kneaded with rubber or plastic base and is moled while applying magnetic field thereto for readily manufacturing rubber plastic magnets in mass production.
JP5714180A 1979-10-29 1980-05-01 Manufacture of rubber plastic magnet Pending JPS5664407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/089,646 US4308155A (en) 1976-11-24 1979-10-29 Rubber or plastic magnet and magnetic powder for making the same

Publications (1)

Publication Number Publication Date
JPS5664407A true JPS5664407A (en) 1981-06-01

Family

ID=22218804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5714180A Pending JPS5664407A (en) 1979-10-29 1980-05-01 Manufacture of rubber plastic magnet

Country Status (1)

Country Link
JP (1) JPS5664407A (en)

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