IN2012DN01597A - - Google Patents

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Publication number
IN2012DN01597A
IN2012DN01597A IN1597DEN2012A IN2012DN01597A IN 2012DN01597 A IN2012DN01597 A IN 2012DN01597A IN 1597DEN2012 A IN1597DEN2012 A IN 1597DEN2012A IN 2012DN01597 A IN2012DN01597 A IN 2012DN01597A
Authority
IN
India
Prior art keywords
powder
soft magnetic
dust core
lubricant
insulating
Prior art date
Application number
Inventor
Muramatsu Kohei
Ishihara Chio
Yanaka Masaki
Original Assignee
Hitachi Powdered Metals
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 Hitachi Powdered Metals filed Critical Hitachi Powdered Metals
Publication of IN2012DN01597A publication Critical patent/IN2012DN01597A/en

Links

Classifications

    • 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
    • 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
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/16—Metallic particles coated with a non-metal
    • 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
    • B22F3/02—Compacting only
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • 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
    • H01F1/26—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 by macromolecular organic substances
    • 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
    • B22F3/02—Compacting only
    • B22F2003/023—Lubricant mixed with the metal powder
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C22C2202/02—Magnetic
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Powder Metallurgy (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

A powder mixture  which contains a soft magnetic powder and an insulating powder lubricant in an amount of 0.1% by mass or more relative to the soft magnetic powder  is compaction molded at a molding pressure of 800 MPa or less  thereby obtaining a powder compact that has a space factor of the soft magnetic powder of 93% or more. The powder compact can be used as a dust core. The dust core has a specific resistance of 10 000 µΩcm or more. A powder of a metal soap such as barium stearate or lithium stearate is used as the insulating powder lubricant.
IN1597DEN2012 2009-07-23 2010-07-08 IN2012DN01597A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009171879A JP5417074B2 (en) 2009-07-23 2009-07-23 Powder magnetic core and manufacturing method thereof
PCT/JP2010/061615 WO2011010561A1 (en) 2009-07-23 2010-07-08 Dust core and method for producing same

Publications (1)

Publication Number Publication Date
IN2012DN01597A true IN2012DN01597A (en) 2015-06-05

Family

ID=43499031

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1597DEN2012 IN2012DN01597A (en) 2009-07-23 2010-07-08

Country Status (7)

Country Link
US (1) US8398879B2 (en)
EP (1) EP2458601B1 (en)
JP (1) JP5417074B2 (en)
KR (1) KR101345671B1 (en)
CN (1) CN102473517A (en)
IN (1) IN2012DN01597A (en)
WO (1) WO2011010561A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103219120B (en) 2012-01-18 2016-02-10 株式会社神户制钢所 The manufacture method of compressed-core and the compressed-core obtained by this manufacture method
JP6088284B2 (en) 2012-10-03 2017-03-01 株式会社神戸製鋼所 Soft magnetic mixed powder
JP6322938B2 (en) * 2013-09-27 2018-05-16 日立化成株式会社 Dust core, method for producing powder for core, mold and mold device for producing dust core, and lubricating liquid for mold for producing dust core
CN105659337B (en) * 2013-09-27 2018-04-10 日立化成株式会社 The pressing mold and the lubricating composition of die device and compressed-core stamper for manufacturing that compressed-core, magnetic core are manufactured with the manufacture method of powder compact, compressed-core
CN104028752B (en) * 2014-06-04 2016-08-17 捷和电机制品(深圳)有限公司 The method strengthening soft magnetic powder metallurgical material intensity
JP6423629B2 (en) * 2014-06-30 2018-11-14 住友電気工業株式会社 Powder core and coil parts
JP6580817B2 (en) * 2014-09-18 2019-09-25 Ntn株式会社 Manufacturing method of magnetic core
JP6478107B2 (en) * 2015-03-30 2019-03-06 日立化成株式会社 Powder magnetic core and reactor using the powder magnetic core
JP7059288B2 (en) * 2017-09-04 2022-04-25 住友電気工業株式会社 Manufacturing method of dust core and raw material powder for dust core
JP6963950B2 (en) * 2017-09-22 2021-11-10 Ｄｏｗａエレクトロニクス株式会社 Iron powder and its manufacturing method, inductor moldings and inductors
US11636963B2 (en) * 2018-07-04 2023-04-25 Sumitomo Electric Industries, Ltd. Method for manufacturing powder magnetic core
CN110434326B (en) * 2019-08-01 2021-09-17 浙江工业大学 Method for coating lithium aluminum oxide insulating layer on surface of metal soft magnetic powder in situ
CN116848599A (en) * 2021-01-21 2023-10-03 株式会社力森诺科 Composite for powder magnetic core, molded body, and powder magnetic core
WO2022158003A1 (en) * 2021-01-21 2022-07-28 昭和電工マテリアルズ株式会社 Dust core compound, molded body, and dust core
CN113620701B (en) * 2021-09-29 2023-04-18 海安南京大学高新技术研究院 Preparation method of superfine-crystal high-temperature-resistant high-frequency manganese-zinc ferrite
KR20240010220A (en) * 2022-07-15 2024-01-23 주식회사 필리퍼 Manufacturing method of Fe-xSi(x=4-10.0wt%) alloy powder core by high temperature forming

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JPS56155510A (en) * 1980-04-30 1981-12-01 Tohoku Metal Ind Ltd Metal dust magnetic core
JP3857356B2 (en) * 1996-05-28 2006-12-13 日立粉末冶金株式会社 Manufacturing method of magnetic powder for dust cores
JP2000049008A (en) * 1998-07-29 2000-02-18 Tdk Corp Ferromagnetic powder for dust core dust core, and its manufacture
JP2003303711A (en) * 2001-03-27 2003-10-24 Jfe Steel Kk Iron base powder and dust core using the same, and method of manufacturing iron base powder
JP4099340B2 (en) * 2002-03-20 2008-06-11 Ｔｄｋ株式会社 Manufacturing method of coil-embedded dust core
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Also Published As

Publication number Publication date
CN102473517A (en) 2012-05-23
WO2011010561A1 (en) 2011-01-27
JP5417074B2 (en) 2014-02-12
US20120119134A1 (en) 2012-05-17
KR101345671B1 (en) 2013-12-30
EP2458601A4 (en) 2014-01-01
US8398879B2 (en) 2013-03-19
EP2458601A1 (en) 2012-05-30
KR20120032562A (en) 2012-04-05
JP2011029302A (en) 2011-02-10
EP2458601B1 (en) 2017-12-06

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