EP0931322B1 - Materiau composite magnetique doux deformable et procede permettant de le produire - Google Patents

Materiau composite magnetique doux deformable et procede permettant de le produire Download PDF

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Publication number
EP0931322B1
EP0931322B1 EP98948761A EP98948761A EP0931322B1 EP 0931322 B1 EP0931322 B1 EP 0931322B1 EP 98948761 A EP98948761 A EP 98948761A EP 98948761 A EP98948761 A EP 98948761A EP 0931322 B1 EP0931322 B1 EP 0931322B1
Authority
EP
European Patent Office
Prior art keywords
powder
composite material
process according
solvent
coated
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 - Lifetime
Application number
EP98948761A
Other languages
German (de)
English (en)
Other versions
EP0931322A1 (fr
Inventor
Wilfried Aichele
Hans-Peter Koch
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP00119956A priority Critical patent/EP1061534A3/fr
Publication of EP0931322A1 publication Critical patent/EP0931322A1/fr
Application granted granted Critical
Publication of EP0931322B1 publication Critical patent/EP0931322B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • 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

Landscapes

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

Claims (11)

  1. Matériau composite déformable à aimantation douce contenant une poudre ayant des propriétés d'aimantation douce et une composition thermoplastique non magnétique, les grains de la poudre étant revêtus de la composition thermoplastique,
    caractérisée en ce que
    la composition thermoplastique est un polyphtalamide et la poudre ayant des caractéristiques d'aimantation douce est une poudre de fer pur phosphatée en surface.
  2. Matériau composite selon la revendication 1,
    caractérisé en ce que
    la teneur en composition thermoplastique représente entre 0,2 et 1 % en poids, de préférence entre 0,3 et 0,8 % en poids par rapport au poids total.
  3. Matériau composite selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce qu'
    on ajoute un agent lubrifiant à la matière composite.
  4. Procédé de fabrication du matériau composite selon l'une quelconque des revendications 1, 2 ou 3,
    caractérisé en ce qu'
    on revêt la poudre de fer pur phosphatée en surface avec un polyphtalamide avec adjonction d'un solvant et ensuite on extrait le solvant.
  5. Procédé selon la revendication 4,
    caractérisée en ce que
    le solvant est de la N-méthylpyrrolidone.
  6. Procédé selon l'une quelconque des revendications 4 ou 5,
    caractérisée en ce que
    l'addition ou l'extraction de solvant se fait sous gaz protecteur ou sous atmosphère d'azote.
  7. Procédé selon la revendication 5,
    caractérisé en ce que
    le revêtement de la poudre se fait par malaxage à une température de 200°C.
  8. Procédé selon l'une quelconque des revendications 4 à 7,
    caractérisé en ce que
    la poudre munie de son revêtement est pressée à froid.
  9. Procédé selon la revendication 8,
    caractérisé en ce qu'
    on effectue un traitement thermique sur l'ébauche de moulage.
  10. Procédé selon l'une quelconque des revendications 4 à 9,
    caractérisé en ce qu'
    après compression on effectue un traitement thermique de l'ébauche de compression au-delà du point de fusion du polyphtalamide.
  11. Procédé selon l'une quelconque des revendications 4 à 10,
    caractérisé en ce qu'
    on ajoute un agent lubrifiant à la poudre revêtue de polyphtalamide avant sa compression.
EP98948761A 1997-08-14 1998-08-11 Materiau composite magnetique doux deformable et procede permettant de le produire Expired - Lifetime EP0931322B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00119956A EP1061534A3 (fr) 1997-08-14 1998-08-11 Matériau composite magnétique doux déformable et son procédé de fabrication

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19735271A DE19735271C2 (de) 1997-08-14 1997-08-14 Weichmagnetischer, formbarer Verbundwerkstoff und Verfahren zu dessen Herstellung
DE19735271 1997-08-14
PCT/DE1998/002297 WO1999009565A1 (fr) 1997-08-14 1998-08-11 Materiau composite magnetique doux deformable et procede permettant de le produire

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP00119956A Division EP1061534A3 (fr) 1997-08-14 1998-08-11 Matériau composite magnétique doux déformable et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP0931322A1 EP0931322A1 (fr) 1999-07-28
EP0931322B1 true EP0931322B1 (fr) 2003-05-21

Family

ID=7838976

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00119956A Withdrawn EP1061534A3 (fr) 1997-08-14 1998-08-11 Matériau composite magnétique doux déformable et son procédé de fabrication
EP98948761A Expired - Lifetime EP0931322B1 (fr) 1997-08-14 1998-08-11 Materiau composite magnetique doux deformable et procede permettant de le produire

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00119956A Withdrawn EP1061534A3 (fr) 1997-08-14 1998-08-11 Matériau composite magnétique doux déformable et son procédé de fabrication

Country Status (5)

Country Link
US (1) US6537389B1 (fr)
EP (2) EP1061534A3 (fr)
JP (1) JP2001504283A (fr)
DE (2) DE19735271C2 (fr)
WO (1) WO1999009565A1 (fr)

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DE19945619A1 (de) 1999-09-23 2001-04-19 Bosch Gmbh Robert Preßmasse und Verfahren zur Herstellung eines weichmagnetischen Verbundwerkstoffes mit der Preßmasse
US6702870B2 (en) * 2000-03-10 2004-03-09 Höganäs Ab Method for preparation of iron-based powder and iron-based powder
DE10106172A1 (de) * 2001-02-10 2002-08-29 Bosch Gmbh Robert Verfahren zur Herstellung eines Formteils aus einem weichmagnetischen Verbundwerkstoff
DE10245088B3 (de) * 2002-09-27 2004-01-08 Vacuumschmelze Gmbh & Co. Kg Pulvermetallurgisch hergestelltes weichmagnetisches Formteil mit hoher Maximalpermeabilität, Verfahren zu seiner Herstellung und dessen Verwendung
US7153594B2 (en) * 2002-12-23 2006-12-26 Höganäs Ab Iron-based powder
DE10331339A1 (de) * 2003-07-10 2005-02-03 Siemens Ag Elektromagnetisches Schaltgerät
JP2005133148A (ja) * 2003-10-30 2005-05-26 Mitsubishi Materials Corp 高強度および高比抵抗を有する複合軟磁性材の製造方法
US7494600B2 (en) * 2003-12-29 2009-02-24 Höganäs Ab Composition for producing soft magnetic composites by powder metallurgy
SE0303580D0 (sv) * 2003-12-29 2003-12-29 Hoeganaes Ab Composition for producing soft magnetic composites by powder metallurgy
KR100845392B1 (ko) 2004-06-23 2008-07-09 회가내스 아베 절연된 연자성 철계 분말 조성물용 윤활제
SE0401644D0 (sv) * 2004-06-23 2004-06-23 Hoeganaes Ab Lubricants for insulated soft magnetic iron-based powder compositions
US7416578B2 (en) * 2004-09-17 2008-08-26 Höganäs Ab Powder metal composition
JP4613622B2 (ja) * 2005-01-20 2011-01-19 住友電気工業株式会社 軟磁性材料および圧粉磁心
DE102006032517B4 (de) * 2006-07-12 2015-12-24 Vaccumschmelze Gmbh & Co. Kg Verfahren zur Herstellung von Pulververbundkernen und Pulververbundkern
JP5332408B2 (ja) * 2008-08-29 2013-11-06 Ｔｄｋ株式会社 圧粉磁心及びその製造方法
US8911663B2 (en) * 2009-03-05 2014-12-16 Quebec Metal Powders, Ltd. Insulated iron-base powder for soft magnetic applications
DE102013212866A1 (de) * 2013-07-02 2015-01-08 Robert Bosch Gmbh Gesinterter weichmagnetischer Verbundwerkstoff und Verfahren zu dessen Herstellung

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Also Published As

Publication number Publication date
US6537389B1 (en) 2003-03-25
DE19735271C2 (de) 2000-05-04
DE59808444D1 (de) 2003-06-26
EP0931322A1 (fr) 1999-07-28
JP2001504283A (ja) 2001-03-27
WO1999009565A1 (fr) 1999-02-25
EP1061534A3 (fr) 2000-12-27
DE19735271A1 (de) 1999-02-25
EP1061534A2 (fr) 2000-12-20

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