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公开(公告)号：JPWO2011126023A1
公开(公告)日：2013-07-11
申请号：JP2012509671
申请日：2011-04-05
Applicant: 愛知製鋼株式会社
CPC classification number: H01F41/0266 , B22F3/004 , B22F3/03 , B22F3/04 , B22F3/24 , B22F2003/248 , B22F2202/05 , B22F2998/10 , B29C43/003 , H01F1/01 , H01F1/0578 , H01F1/083 , H01F1/28 , H01F41/0273 , H01F41/028 , H02K15/03
Abstract: 円環状異方性ボンド磁石の生産性向上と低価格化を図ることができる異方性ボンド磁石の製造方法を提供する。本発明の異方性ボンド磁石の製造方法は、磁石原料を充填した円環状キャビティ(c)の外周囲に偶数均等に配設した永久磁石を含む配向磁極体(13、14)から配向磁場を印加して希土類異方性磁石粉末をセミラジアル配向させる配向工程と、セミラジアル配向させた石原料を圧縮成形して円環状の成形体を得る成形工程と、成形体を円環状キャビティから排出する排出工程とを備える異方性ボンド磁石の製造方法であって、成形工程後の成形体に対して配向磁極体を周方向にのみ相対移動させ、配向磁場による成形体の磁化を打ち消す向きの減磁磁場を配向工程時とは異極の配向磁極体から成形体へ印加する減磁工程を備えることを特徴とする。これにより多数の異方性ボンド磁石を短時間に製造することが可能となった。
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公开(公告)号：JP5516723B2
公开(公告)日：2014-06-11
申请号：JP2012509671
申请日：2011-04-05
Applicant: 愛知製鋼株式会社
CPC classification number: H01F41/0266 , B22F3/004 , B22F3/03 , B22F3/04 , B22F3/24 , B22F2003/248 , B22F2202/05 , B22F2998/10 , B29C43/003 , H01F1/01 , H01F1/0578 , H01F1/083 , H01F1/28 , H01F41/0273 , H01F41/028 , H02K15/03
Abstract: A production method for an anisotropic bonded magnet is provided which can improve the productivity for annular anisotropic bonded magnets and reduce the cost thereof. The production method for an anisotropic bonded magnet according to the present invention comprises: an alignment step that applies, from aligning magnetic pole bodies (13, 14) which include an even number of permanent magnets arranged uniformly around the outer periphery of an annular cavity (c) filled with magnetic raw material, aligning magnetic fields to cause rare-earth anisotropic magnet powder to be semi-radially aligned; a molding step that compressively molds the semi-radially aligned magnet raw material to obtain an annular compact; and a discharging step that discharges the compact from the annular cavity, and is characterized by further comprising a demagnetizing step that causes the aligning magnetic pole bodies to relatively move only in circumferential direction with respect to the compact after the molding step thereby to apply demagnetization magnetic fields to the compact, wherein the demagnetization magnetic fields are applied from the aligning magnetic pole bodies with opposite poles to those during the alignment step, and the demagnetization magnetic fields are in directions for cancelling the magnetization of the compact caused by the aligning magnetic fields. This allows considerable number of anisotropic bonded magnets to be produced in a short time.
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公开(公告)号：JPWO2011126026A1
公开(公告)日：2013-07-11
申请号：JP2012509674
申请日：2011-04-05
Applicant: 愛知製鋼株式会社
CPC classification number: H01F41/0266 , B22F3/004 , B22F3/03 , B22F3/04 , B22F3/24 , B22F2003/248 , B22F2202/05 , B22F2998/10 , B29C43/003 , H01F1/01 , H01F1/0578 , H01F1/083 , H01F1/28 , H01F41/0273 , H01F41/028 , H02K15/03
Abstract: 筒状ボンド磁石と筒状ケースが強固に圧着したケース一体型ボンド磁石を効率的に生産できる製造方法を提供する。本発明のケース一体型ボンド磁石の製造方法は、一種以上の希土類磁石粉末とバインダとなる熱硬化性樹脂とを含む磁石原料を筒状キャビティへ充填する充填工程と、磁石原料を加熱して熱硬化性樹脂を軟化状態または溶融状態としつつ、磁石原料を圧縮成形して筒状成形体を得る加熱成形工程と、筒状キャビティと同軸の内周面を有する金属製の筒状ケースへ、該筒成形体を該筒状キャビティから排出しつつ圧入する排出圧入工程と、筒状成形体を筒状ケースと共に加熱して熱硬化性樹脂を硬化させる熱硬化工程とを備える。筒状ケースに圧入された筒状成形体を熱硬化することにより、筒状成形体が変化した筒状ボンド磁石は、想定以上に熱膨張する。その結果、筒状ケースと筒状ボンド磁石が強固に圧着したケース一体型ボンド磁石が得られる。
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公开(公告)号：JP3918874B2
公开(公告)日：2007-05-23
申请号：JP2006515423
申请日：2005-11-29
Applicant: 愛知製鋼株式会社
CPC classification number: H01F1/0572 , F02M37/10 , F04D5/002 , F04D13/06 , H01F1/0573 , H01F1/0578 , H01F1/059 , H01F41/026 , H02K1/17 , H02K15/03
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公开(公告)号：JP3731597B2
公开(公告)日：2006-01-05
申请号：JP2003367523
申请日：2003-10-28
Applicant: 愛知製鋼株式会社
Abstract: PROBLEM TO BE SOLVED: To provide a bond magnet which is composed of Co loess R1 based d-HDDR anisotropic magnet powder and excellent in magnetic property and thermal resistance. SOLUTION: This bond magnet is composed of Co loess R1 based d-HDDR coarse powder wherein mean particle diameter and compounding ratio are specified and surface coating is performed with surfactant, R2 based impalpable powder wherein surface coating is performed with surfactant, and resin which is binder (R1 and R2 are rare earth elements). Periphery of the Co loess R1 based d-HDDR coarse powder is surrounded with a ferromagnetic cushion object wherein R2 based impalpable powder is distributed equality in resin. The bond magnet shows superior thermal resistance together with high magnetic property in spite of the Co loess R1 based d-HDDR anisotropic magnet powder whose oxidation resistance is inferior and crack sensitivity is high is used. COPYRIGHT: (C)2005,JPO&NCIPI
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公开(公告)号：JP3587158B2
公开(公告)日：2004-11-10
申请号：JP2000319447
申请日：2000-10-19
Applicant: 愛知製鋼株式会社
CPC classification number: H01F1/0573
Abstract: PROBLEM TO BE SOLVED: To provide a magnetically anisotropic bonded magnet constituted of rare earth magnet powder having high anisotropy which is subjected to high-temperature hydrogen heat treatment and thermosetting resin. SOLUTION: A rare earth element (to be referred to as R in the following) is subjected to high temperature hydrogen heat treatment, has anisotropy (Br/Bs where Bs is 1.6 T (16 kG))of at least 0.70, and contains yttrium (Y). RFeB alloy consists of R, boron (B), inevitable impurities, and iron (Fe) as the residue. The rare earth magnet powder consists of RFe(Ga+Nb)B alloy, which contains RFeB alloy, gallium(Ga) and niobium(Nb). The magnetically anisotropic bonded magnet consists of the rare earth magnet powder and thermosetting resin and has a maximum energy product of at least 135 kJ/m3 can be obtained.
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公开(公告)号：JP5397540B2
公开(公告)日：2014-01-22
申请号：JP2012509674
申请日：2011-04-05
Applicant: 愛知製鋼株式会社
CPC classification number: H01F41/0266 , B22F3/004 , B22F3/03 , B22F3/04 , B22F3/24 , B22F2003/248 , B22F2202/05 , B22F2998/10 , B29C43/003 , H01F1/01 , H01F1/0578 , H01F1/083 , H01F1/28 , H01F41/0273 , H01F41/028 , H02K15/03
Abstract: A production method for an anisotropic bonded magnet is provided which can improve the productivity for annular anisotropic bonded magnets and reduce the cost thereof. The production method for an anisotropic bonded magnet according to the present invention comprises: an alignment step that applies, from aligning magnetic pole bodies (13, 14) which include an even number of permanent magnets arranged uniformly around the outer periphery of an annular cavity (c) filled with magnetic raw material, aligning magnetic fields to cause rare-earth anisotropic magnet powder to be semi-radially aligned; a molding step that compressively molds the semi-radially aligned magnet raw material to obtain an annular compact; and a discharging step that discharges the compact from the annular cavity, and is characterized by further comprising a demagnetizing step that causes the aligning magnetic pole bodies to relatively move only in circumferential direction with respect to the compact after the molding step thereby to apply demagnetization magnetic fields to the compact, wherein the demagnetization magnetic fields are applied from the aligning magnetic pole bodies with opposite poles to those during the alignment step, and the demagnetization magnetic fields are in directions for cancelling the magnetization of the compact caused by the aligning magnetic fields. This allows considerable number of anisotropic bonded magnets to be produced in a short time.
