KR960025835A - Rare Earth Magnet Manufacturing Method - Google Patents

Rare Earth Magnet Manufacturing Method Download PDF

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Publication number
KR960025835A
KR960025835A KR1019940036590A KR19940036590A KR960025835A KR 960025835 A KR960025835 A KR 960025835A KR 1019940036590 A KR1019940036590 A KR 1019940036590A KR 19940036590 A KR19940036590 A KR 19940036590A KR 960025835 A KR960025835 A KR 960025835A
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KR
South Korea
Prior art keywords
binder
rare earth
preform
compound
magnet
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Application number
KR1019940036590A
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Korean (ko)
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KR100201684B1 (en
Inventor
안길수
권문
Original Assignee
정몽원
만도기계 주식회사
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Priority to KR1019940036590A priority Critical patent/KR100201684B1/en
Publication of KR960025835A publication Critical patent/KR960025835A/en
Application granted granted Critical
Publication of KR100201684B1 publication Critical patent/KR100201684B1/en

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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
    • 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
    • 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
    • H01F1/06—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 in the form of particles, e.g. powder
    • H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/083—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 in the form of particles, e.g. powder pressed, sintered, or bound together in a bonding agent
    • 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
    • H01F1/06—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 in the form of particles, e.g. powder
    • H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/086—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 in the form of particles, e.g. powder pressed, sintered, or bound together sintered

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

본 발명은 기존의 페라이트 자석에 비해 자기적특성도가 높고, 기존의 희토류 제조방법에 비해 제조공정이 간단하며, 마그네트의 제작시 예비성형체의 수축에 의한 치수 불량과 크랙, 비틀림등의 발생을 감소시킴으로써 회수율을 높이고, 복잡한 형상의 마그네트 제조가 가능한 희토류 마그네트 제조방법을 제공하는데 있으며, 희토류합금을 120~130㎛이 크기로 분쇄하여 파우더(Power)를 제조하는 단계와, 85~98중량%의 파우더와 15~2중량%의 바인더(Binder)를 혼합하여 슬러리(Slurry)상태에서 바인더를 파우더입자의 표면에 코팅(Coating)시키고 이를 건조시켜 콤파운드(Compound)를 제조하는 단계와, 상기 콤파운드를 금형내에 넣고 성형하여 마그네트의 예비성형체를 제조하는 단계와, 상기 예비성형체내의 바인더를 경화시켜 본디드(Bonded)성형체를 제조하는 단계와, 상기 본디드 성형체를 착자하는 단계로 이루어진 것이다.The present invention has higher magnetic properties than the conventional ferrite magnets, and the manufacturing process is simpler than the conventional rare earth manufacturing method, and reduces the occurrence of dimensional defects, cracks, and torsions due to shrinkage of the preform when the magnet is manufactured. It provides a rare earth magnet manufacturing method to increase the recovery rate, and to produce a magnet of a complex shape, to prepare a powder by grinding the rare earth alloy to a size of 120 ~ 130㎛, and 85 ~ 98% by weight of powder And 15 to 2% by weight of a binder (Binder) by mixing the binder (Slurry) in the slurry (Coating) the surface of the powder particles (Coating) and drying it to produce a compound (Compound), and the compound in the mold Preparing and molding a preform of a magnet; and curing a binder in the preform to produce a bonded product. It has been made by the steps of magnetizing the bonded molded articles.

Description

희토류 마그네트 제조방법Rare Earth Magnet Manufacturing Method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (5)

희토류합금을 120~130㎛의 크기로 분쇄하여 파우더(Power)를 제조하는 단계와, 85~98중량%의 파우더와15~2중량%의 바인더(Binder)를 혼합하여 슬러리(Slurry)상태에서 바인더를 파우더입자의 표면에 코팅(Coating)시키고 이를 건조시켜 콤파운드(Compound)를 제조하는 단계와, 상기 콤파운드를 금형내에 넣고 성형하여 마그네트의 예비성형체를제조하는 단계와, 상기 예비성형체내의 바인더를 경화시켜 본디드(Bonded)성형체를 제조하는 단계와, 상기 본디드 성형체를 착자하는 단계를 포함하여 됨을 특징으로 하는 희토류 마그네트 제조방법.Grinding the rare earth alloy to a size of 120 ~ 130㎛ to prepare a powder (Power), and mixing the 85 to 98% by weight of the powder and 15 to 2% by weight of the binder (Binder) in the slurry (Slurry) binder Coating the surface of the powder particles and drying the compound to prepare a compound, and putting the compound into a mold to form a preform of a magnet, and curing the binder in the preform. A method of manufacturing a rare earth magnet, comprising the steps of preparing a bonded molded body and magnetizing the bonded molded body. 제1항에 있어서, 상기 바인더는 에폭시와 경화제의 혼합비를 1:1 로 하고, 아세톤에 희석시켜 됨을 특징으로 하는 희토류 마그네트 제조방법.The method of claim 1, wherein the binder is a rare earth magnet manufacturing method, characterized in that the mixing ratio of the epoxy and the curing agent is 1: 1 and diluted in acetone. 제1항에 있어서, 상기 예비성형체는 콤파운드를 금형내에 넣고, 냉간압축 성형하여 5.8g/㎤의 밀도를 갖는희토류 마그네트 제조방법.The rare earth magnet manufacturing method according to claim 1, wherein the preform has a density of 5.8 g / cm < 3 > 제1항에 있어서, 상기 본디드성형체는 예비성형체를 진공상태의 오븐내에서 120℃에서 2시간, 150℃에서 2시간 연속경화시켜 되는 회토류 마그네트 제조방법.The method of claim 1, wherein the bonded molded body is cured in a vacuum oven in a vacuum oven for 2 hours at 120 ° C. for 2 hours at 150 ° C. for 2 hours. 제5항에 있어서, 상기 본디드성형체는 산화 부식을 방지하기 위해 산화방지제로 표면처리 되는 희토류 마그네트 제조방법.The method of claim 5, wherein the bonded molded body is surface treated with an antioxidant to prevent oxidative corrosion. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940036590A 1994-12-24 1994-12-24 Rare-earth magnet manufacturing method KR100201684B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940036590A KR100201684B1 (en) 1994-12-24 1994-12-24 Rare-earth magnet manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940036590A KR100201684B1 (en) 1994-12-24 1994-12-24 Rare-earth magnet manufacturing method

Publications (2)

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KR960025835A true KR960025835A (en) 1996-07-20
KR100201684B1 KR100201684B1 (en) 1999-06-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100347842B1 (en) * 2000-05-03 2002-08-13 민용기 Manufacture method and it's manufacture goods of magnet
KR100379247B1 (en) * 2000-09-06 2003-04-08 한국과학기술연구원 Method for Preparing Rare-Earth Base Permanent Magnets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100347842B1 (en) * 2000-05-03 2002-08-13 민용기 Manufacture method and it's manufacture goods of magnet
KR100379247B1 (en) * 2000-09-06 2003-04-08 한국과학기술연구원 Method for Preparing Rare-Earth Base Permanent Magnets

Also Published As

Publication number Publication date
KR100201684B1 (en) 1999-06-15

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