JPS55138205A - Dust core - Google Patents

Dust core

Info

Publication number
JPS55138205A
JPS55138205A JP4555679A JP4555679A JPS55138205A JP S55138205 A JPS55138205 A JP S55138205A JP 4555679 A JP4555679 A JP 4555679A JP 4555679 A JP4555679 A JP 4555679A JP S55138205 A JPS55138205 A JP S55138205A
Authority
JP
Japan
Prior art keywords
iron powder
powder
bonding agent
insulating
magnetic flux
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
JP4555679A
Other languages
Japanese (ja)
Other versions
JPS5846044B2 (en
Inventor
Tatsuhiko Noda
Mitsuo Kihara
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.)
Nippon Kinzoku Co Ltd
Original Assignee
Nippon Kinzoku Co 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 Nippon Kinzoku Co Ltd filed Critical Nippon Kinzoku Co Ltd
Priority to JP4555679A priority Critical patent/JPS5846044B2/en
Publication of JPS55138205A publication Critical patent/JPS55138205A/en
Publication of JPS5846044B2 publication Critical patent/JPS5846044B2/en
Expired 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/20—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/22—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Soft Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE:To obtain high magnetic flux density by adding insulating powder, 0.1- 10wt%, having a layer-form crystalline structure, mesh less than 40, electrically insulating bonding agent, 0.1-5wt%, to ferromagnetic powder, and pressing this mixture so that its composite density becomes 5.0-7.5g/cm<3>. CONSTITUTION:Iron powder 1 is prepared by using electrolytic iron powder, carbonyl iron powder, reduced iron powder, atomized iron powder, or permalloy iron powder, mesh less than 40. Next, insulating powder 2, such as mica, montmonillonite graphite, molybdenum dioxide, boron nitride, mesh below 40, 0.1- 10wt%, is added to iron powder 1. Further, in order to facilitate forming and increase insulation characteristics, bonding agent 3, such as inorganic glass, enamel or organic resion, 0.1-5wt%, is added to this, and the resultant substance is compression molded so that the composite density becomes 5.0-7.5g/cm<3>. By this, powder 2 and bonding agent 3 fills the gaps of iron powder 1 and the magnetic flux density is increased, and at the same time, the weight is reduced.
JP4555679A 1979-04-14 1979-04-14 powder iron core Expired JPS5846044B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4555679A JPS5846044B2 (en) 1979-04-14 1979-04-14 powder iron core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4555679A JPS5846044B2 (en) 1979-04-14 1979-04-14 powder iron core

Publications (2)

Publication Number Publication Date
JPS55138205A true JPS55138205A (en) 1980-10-28
JPS5846044B2 JPS5846044B2 (en) 1983-10-14

Family

ID=12722625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4555679A Expired JPS5846044B2 (en) 1979-04-14 1979-04-14 powder iron core

Country Status (1)

Country Link
JP (1) JPS5846044B2 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208854A (en) * 1981-06-15 1982-12-22 Brother Ind Ltd Stepping motor
JPS585241A (en) * 1981-07-02 1983-01-12 Brother Ind Ltd Method of powder molding
JPS59119710A (en) * 1982-12-27 1984-07-11 Toshiba Corp Iron core
EP0177276A2 (en) * 1984-09-29 1986-04-09 Kabushiki Kaisha Toshiba Compressed magnetic powder core
JPS62250607A (en) * 1986-04-23 1987-10-31 Hitachi Metals Ltd Manufacture of fe-si-al alloy dust core
EP0647180A4 (en) * 1991-05-17 1994-03-11 Hoeganaes Corp Thermoplastic coated magnetic powder compositions and methods of making same.
WO2001022439A1 (en) * 1999-09-23 2001-03-29 Robert Bosch Gmbh Soft magnetic material and method for producing same
EP1246209A2 (en) * 2001-03-27 2002-10-02 Kawasaki Steel Corporation Ferromagnetic-metal-based powder, powder core using the same, and manufacturing method for ferromagnetic-metal-based powder
US6749767B2 (en) 2001-03-21 2004-06-15 Kobe Steel Ltd Powder for high strength dust core, high strength dust core and method for making same
US6940388B2 (en) * 2000-09-08 2005-09-06 Tdk Corporation Dust core
JP5462356B2 (en) * 2010-03-26 2014-04-02 日立粉末冶金株式会社 Powder magnetic core and manufacturing method thereof
WO2014120030A1 (en) * 2013-01-29 2014-08-07 Instytut Niskich Temperatur I Badań Strukturalnych Process of manufacturing of soft magnetic ceramic and its use
US8911663B2 (en) 2009-03-05 2014-12-16 Quebec Metal Powders, Ltd. Insulated iron-base powder for soft magnetic applications
JP2015207652A (en) * 2014-04-21 2015-11-19 株式会社神戸製鋼所 Simple evaluation method for pressed powder magnetic core

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3041513B1 (en) 2013-09-08 2020-08-05 Kodiak Sciences Inc. Factor viii zwitterionic polymer conjugates
US9840553B2 (en) 2014-06-28 2017-12-12 Kodiak Sciences Inc. Dual PDGF/VEGF antagonists
EP3207128B1 (en) 2014-10-17 2022-07-27 Kodiak Sciences Inc. Butyrylcholinesterase zwitterionic polymer conjugates
SG11201805420SA (en) 2015-12-30 2018-07-30 Kodiak Sciences Inc Antibodies and conjugates thereof

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0324133B2 (en) * 1981-06-15 1991-04-02 Brother Ind Ltd
JPS57208854A (en) * 1981-06-15 1982-12-22 Brother Ind Ltd Stepping motor
JPS585241A (en) * 1981-07-02 1983-01-12 Brother Ind Ltd Method of powder molding
JPS59119710A (en) * 1982-12-27 1984-07-11 Toshiba Corp Iron core
JPH0416004B2 (en) * 1982-12-27 1992-03-19 Tokyo Shibaura Electric Co
EP0177276A2 (en) * 1984-09-29 1986-04-09 Kabushiki Kaisha Toshiba Compressed magnetic powder core
JPS62250607A (en) * 1986-04-23 1987-10-31 Hitachi Metals Ltd Manufacture of fe-si-al alloy dust core
EP0647180A4 (en) * 1991-05-17 1994-03-11 Hoeganaes Corp Thermoplastic coated magnetic powder compositions and methods of making same.
EP0647180A1 (en) * 1991-05-17 1995-04-12 Hoeganaes Corporation Thermoplastic coated magnetic powder compositions and methods of making same
WO2001022439A1 (en) * 1999-09-23 2001-03-29 Robert Bosch Gmbh Soft magnetic material and method for producing same
US6620376B1 (en) 1999-09-23 2003-09-16 Robert Bosch Gmbh Soft magnetic material and method for manufacturing it
US6940388B2 (en) * 2000-09-08 2005-09-06 Tdk Corporation Dust core
US6749767B2 (en) 2001-03-21 2004-06-15 Kobe Steel Ltd Powder for high strength dust core, high strength dust core and method for making same
EP1246209A2 (en) * 2001-03-27 2002-10-02 Kawasaki Steel Corporation Ferromagnetic-metal-based powder, powder core using the same, and manufacturing method for ferromagnetic-metal-based powder
EP1246209A3 (en) * 2001-03-27 2002-12-18 Kawasaki Steel Corporation Ferromagnetic-metal-based powder, powder core using the same, and manufacturing method for ferromagnetic-metal-based powder
US8911663B2 (en) 2009-03-05 2014-12-16 Quebec Metal Powders, Ltd. Insulated iron-base powder for soft magnetic applications
JP5462356B2 (en) * 2010-03-26 2014-04-02 日立粉末冶金株式会社 Powder magnetic core and manufacturing method thereof
US9646756B2 (en) 2010-03-26 2017-05-09 Hitachi Powdered Metals Co., Ltd. Powder magnetic core and method for producing the same
WO2014120030A1 (en) * 2013-01-29 2014-08-07 Instytut Niskich Temperatur I Badań Strukturalnych Process of manufacturing of soft magnetic ceramic and its use
JP2016508673A (en) * 2013-01-29 2016-03-22 インスティトゥト ニスキク テンペラトゥル イ バダン ストルクトゥラリンクＩｎｓｔｙｔｕｔ Ｎｉｓｋｉｃｈ Ｔｅｍｐｅｒａｔｕｒ Ｉ Ｂａｄａｎ Ｓｔｒｕｋｔｕｒａｌｎｙｃｈ Method for producing soft magnetic ceramic material
US9589723B2 (en) 2013-01-29 2017-03-07 Instytut Niskich Temperatur I Badan Strukturalnych Process of manufacturing of soft magnetic ceramic and its use
JP2015207652A (en) * 2014-04-21 2015-11-19 株式会社神戸製鋼所 Simple evaluation method for pressed powder magnetic core

Also Published As

Publication number Publication date
JPS5846044B2 (en) 1983-10-14

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