EP1642661A4 - Process and system for producing granulation powder of rare earth alloy and process for producing sintered object of rare earth alloy - Google Patents

Process and system for producing granulation powder of rare earth alloy and process for producing sintered object of rare earth alloy

Info

Publication number
EP1642661A4
EP1642661A4 EP04734936A EP04734936A EP1642661A4 EP 1642661 A4 EP1642661 A4 EP 1642661A4 EP 04734936 A EP04734936 A EP 04734936A EP 04734936 A EP04734936 A EP 04734936A EP 1642661 A4 EP1642661 A4 EP 1642661A4
Authority
EP
European Patent Office
Prior art keywords
powder
rare earth
earth alloy
producing
track
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
EP04734936A
Other languages
German (de)
French (fr)
Japanese (ja)
Other versions
EP1642661A1 (en
EP1642661B1 (en
Inventor
Akira Nakamura
Sumihito Nakashima
Tomoiku Otani
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.)
Proterial Ltd
Original Assignee
Neomax 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 Neomax Co Ltd filed Critical Neomax Co Ltd
Publication of EP1642661A1 publication Critical patent/EP1642661A1/en
Publication of EP1642661A4 publication Critical patent/EP1642661A4/en
Application granted granted Critical
Publication of EP1642661B1 publication Critical patent/EP1642661B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01F41/0253—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 for manufacturing permanent magnets
    • H01F41/0273—Imparting anisotropy
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/11—Making amorphous alloys
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/045—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by other means than ball or jet milling
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to 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
    • H01F1/032—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
    • H01F1/04—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 metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered

Abstract

A process for producing granulation powder comprising a step for providing powder of rare earth alloy having remanent magnetization, a step for feeding the powder to a track (22) defined by a side face (22a) and a bottom face (22b) inclining downward toward the side face, and a step for imparting kinetic energy to the powder by vibrating the track and performing granulation under substantially zero magnetic field utilizing cohesive force caused by remanent magnetization of the powder and rolling action caused by kinetic energy while transporting the powder in the longitudinal direction of the track. Granulation powder of rare earth alloy exhibiting excellent fluidity and press moldability and capable of producing a magnet having excellent magnetic characteristics can thereby be obtained.
EP04734936A 2003-05-27 2004-05-26 Process and apparatus for producing granulation powder of rare earth alloy and process for producing sintered object of rare earth alloy Active EP1642661B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003148567 2003-05-27
PCT/JP2004/007586 WO2004105982A1 (en) 2003-05-27 2004-05-26 Process and system for producing granulation powder of rare earth alloy and process for producing sintered object of rare earth alloy

Publications (3)

Publication Number Publication Date
EP1642661A1 EP1642661A1 (en) 2006-04-05
EP1642661A4 true EP1642661A4 (en) 2007-10-10
EP1642661B1 EP1642661B1 (en) 2009-07-15

Family

ID=33487122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04734936A Active EP1642661B1 (en) 2003-05-27 2004-05-26 Process and apparatus for producing granulation powder of rare earth alloy and process for producing sintered object of rare earth alloy

Country Status (5)

Country Link
EP (1) EP1642661B1 (en)
JP (1) JP4910393B2 (en)
CN (2) CN101811191B (en)
DE (1) DE602004022051D1 (en)
WO (1) WO2004105982A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4662046B2 (en) * 2005-09-22 2011-03-30 Ｔｄｋ株式会社 Manufacturing method of rare earth sintered magnet
CN112159211B (en) * 2020-09-30 2024-02-06 武汉理工大学 Preparation method of high-density high-hardness submillimeter-grade alumina ceramic balls

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5116434A (en) * 1987-06-19 1992-05-26 Ovonic Synthetic Materials Company, Inc. Method of manufacturing, concentrating, and separating enhanced magnetic parameter material from other magnetic co-products
JPH06262055A (en) * 1993-03-09 1994-09-20 Daiwa Kasei Kogyo Kk Preparation and apparatus for adhered conglomerated particle
US5733384A (en) * 1995-06-14 1998-03-31 Institut Fuer Festkoerper-Und Werkstofforschung Process for producing hard-magnetic parts
WO2002054418A1 (en) * 2001-01-08 2002-07-11 Magnequench, Inc. Isotropic rare earth material of high intrinsic induction
JP2003166001A (en) * 2001-11-28 2003-06-13 Sumitomo Special Metals Co Ltd Method for manufacturing granulated powder of rare earth alloy and sintered compact of rare earth alloy
JP2004131815A (en) * 2002-10-11 2004-04-30 Sumitomo Special Metals Co Ltd Method and apparatus for manufacturing granulated powder of rare earth alloy, and method for manufacturing rare earth alloy sintered compact
US20050006005A1 (en) * 2001-11-28 2005-01-13 Futoshi Kuniyoshi Method and apparatus for producing granulated powder of rare earth alloy and method for producing rare earth alloy sintered compact

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01114005A (en) * 1987-10-28 1989-05-02 Fuji Elelctrochem Co Ltd Pelletization of permanent magnet powder
JPH10120148A (en) * 1996-10-22 1998-05-12 Shinko Electric Co Ltd In-line feeding device for parts
JP4081846B2 (en) * 1998-03-24 2008-04-30 神鋼電機株式会社 Parts feeding device
US6302939B1 (en) * 1999-02-01 2001-10-16 Magnequench International, Inc. Rare earth permanent magnet and method for making same
JP2002298621A (en) 2001-01-11 2002-10-11 Denki Kogyo Kk Rotating lighting device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5116434A (en) * 1987-06-19 1992-05-26 Ovonic Synthetic Materials Company, Inc. Method of manufacturing, concentrating, and separating enhanced magnetic parameter material from other magnetic co-products
JPH06262055A (en) * 1993-03-09 1994-09-20 Daiwa Kasei Kogyo Kk Preparation and apparatus for adhered conglomerated particle
US5733384A (en) * 1995-06-14 1998-03-31 Institut Fuer Festkoerper-Und Werkstofforschung Process for producing hard-magnetic parts
WO2002054418A1 (en) * 2001-01-08 2002-07-11 Magnequench, Inc. Isotropic rare earth material of high intrinsic induction
JP2003166001A (en) * 2001-11-28 2003-06-13 Sumitomo Special Metals Co Ltd Method for manufacturing granulated powder of rare earth alloy and sintered compact of rare earth alloy
US20050006005A1 (en) * 2001-11-28 2005-01-13 Futoshi Kuniyoshi Method and apparatus for producing granulated powder of rare earth alloy and method for producing rare earth alloy sintered compact
JP2004131815A (en) * 2002-10-11 2004-04-30 Sumitomo Special Metals Co Ltd Method and apparatus for manufacturing granulated powder of rare earth alloy, and method for manufacturing rare earth alloy sintered compact

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2004105982A1 *

Also Published As

Publication number Publication date
CN101811191A (en) 2010-08-25
CN101811191B (en) 2011-09-21
EP1642661A1 (en) 2006-04-05
CN1717290A (en) 2006-01-04
JP4910393B2 (en) 2012-04-04
DE602004022051D1 (en) 2009-08-27
EP1642661B1 (en) 2009-07-15
WO2004105982A1 (en) 2004-12-09
CN1717290B (en) 2010-08-11
JPWO2004105982A1 (en) 2006-07-20

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