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1.发明公开
公开(公告)号：EP2767992A1
公开(公告)日：2014-08-20
申请号：EP12840664.2
申请日：2012-10-09
发明人： SAKUMA, Noritsugu , KISHIMOTO, Hidefumi , MIYAMOTO, Noritaka , KATO, Akira , MANABE, Akira , MANABE, Akira , ICHIGOZAKI, Daisuke , SHOJI, Tetsuya , HARAKAWA, Shoichi
CPC分类号： H01F1/20 , B22F9/04 , B22F2009/048 , C22C33/0278 , C22C38/002 , C22C38/005 , C22C38/10 , C22C2202/02 , H01F1/0571 , H01F1/0577
摘要： A method for producing magnetic powder for forming a sintered body that is a precursor of a rare-earth magnet. Provided is a method for producing magnetic powder for forming a sintered body that is a precursor of a rare-earth magnet, which can produce magnetic powder with a structure containing optimal nanosized crystal grains by accurately and efficiently sorting out magnetic powder containing no coarse grains in the structure thereof. A method for producing magnetic powder p for forming a sintered body S that is a precursor of a rare-earth magnet, the sintered body S including an Nd-Fe-B-based main phase with a nanocrystalline structure, and a grain boundary phase around the main phase, and the rare-earth magnet being adapted to be formed by applying hot deformation processing to the sintered body S for imparting anisotropy thereto and diffusing an alloy for improving coercivity therein, the method including discharging a metal melt onto a chill roll R to produce a quenched ribbon B, and grinding the quenched ribbon B into grains in the size range of 50 to 1000 µm to produce magnetic powder in the mass range of 0.0003 to 0.3 mg; conducting a test to see whether or not the magnetic powder in the mass range adsorbs onto a magnet with a surface magnetic flux density of 2 mT or less, and sorting out magnetic powder p that has not adsorbed onto the magnet, as the magnetic powder for forming the sintered body S.
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公开(公告)号：EP2913831A1
公开(公告)日：2015-09-02
申请号：EP13848858.0
申请日：2013-10-17
CPC分类号： H01F41/0266 , B22F3/14 , B22F3/17 , B22F3/20 , B22F2003/208 , B22F2998/10 , B22F2999/00 , C22C28/00 , H01F1/0576 , H01F41/0273 , B22F2202/05 , B22F2009/048
摘要： Provided is a method for manufacturing a rare-earth magnet through hot deformation processing, capable of manufacturing a rare-earth magnet having high degree of orientation at the entire area of the rare-earth magnet manufactured and high remanence, without increasing processing cost therefor. A method includes: a step of press-forming powder as a rare-earth magnetic material to form a compact S; and a step of performing hot deformation processing to the compact S, thus manufacturing the rare-earth magnet C. The hot deformation processing includes two steps of extruding and upsetting. The extruding is to place a compact S in a die Da, and apply pressure to the compact S' in a heated state with an extrusion punch PD so as to reduce the thickness for extrusion to prepare the rare-earth magnet intermediary body S" having a sheet form, and the upsetting is to apply pressure to the rare-earth magnet intermediary body S" in the thickness direction to reduce the thickness, thus manufacturing the rare-earth magnet C.
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3.发明授权
公开(公告)号：EP2221836B1
公开(公告)日：2015-07-29
申请号：EP08845521.7
申请日：2008-10-30
发明人： TAJIMA, Shin , TANI, Masaaki , OKAMOTO, Daisuke , HOSHINA, Eisuke , KISHIMOTO, Hidefumi , ICHIGOZAKI, Daisuke
CPC分类号： H01F1/24 , B22F1/0062 , B22F2003/026 , B22F2003/248 , B22F2998/10 , C21D8/1216 , C21D8/1244 , C22C1/002 , C22C33/02 , H01F1/14 , H01F1/26 , H01F41/0246 , Y10T428/12014 , Y10T428/12181 , B22F9/082 , B22F3/02 , B22F3/24
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公开(公告)号：EP2680284A1
公开(公告)日：2014-01-01
申请号：EP11859634.5
申请日：2011-02-21
CPC分类号： H01F41/0246 , C22C1/02 , C22C33/02 , C22C38/002 , C22C38/005 , C22C38/10 , C22C2202/02 , H01F1/0576 , H01F41/0266
摘要： The present invention provides a method of production of a rare earth magnet which achieves high magnetization by hot working and at the same time secures high coercivity.
A method of production of the present invention is a method for producing an R-T-B-based rare earth magnet comprising: molding a powder of an R-T-B-based rare earth alloy (R: rare earth element, T: Fe or Fe part of which is substituted by Co) to form a bulk; then hot working the bulk; and before the molding, mixing with the powder of an R-T-B-based rare earth alloy either a metal which forms a liquid phase in copresence with R at a temperature lower than the hot working temperature, or an alloy which forms a liquid phase at a temperature lower than the hot working temperature.摘要翻译： 本发明提供一种通过热加工获得高磁化强度并同时确保高矫顽力的稀土磁体的制造方法。 本发明的制造方法是RTB系稀土类磁铁的制造方法，其特征在于，将RTB系稀土类合金（R：稀土元素，T：Fe或Fe的一部分被取代 由Co）形成块体; 然后热加工散装; 在成型前，将RTB系稀土类合金的粉末与在低于热加工温度的温度下与R共存的液相的金属或在一定温度下形成液相的合金 低于热工作温度。
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5.发明公开POWDER FOR MAGNETIC CORE, POWDER MAGNETIC CORE, AND THEIR PRODUCTION METHODS 有权PULVERFÜREINEN MAGNETKERN，PULVERMAGNETKERN UND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP2221836A1
公开(公告)日：2010-08-25
申请号：EP08845521.7
申请日：2008-10-30
发明人： TAJIMA, Shin , TANI, Masaaki , OKAMOTO, Daisuke , HOSHINA, Eisuke , KISHIMOTO, Hidefumi , ICHIGOZAKI, Daisuke
CPC分类号： H01F1/24 , B22F1/0062 , B22F2003/026 , B22F2003/248 , B22F2998/10 , C21D8/1216 , C21D8/1244 , C22C1/002 , C22C33/02 , H01F1/14 , H01F1/26 , H01F41/0246 , Y10T428/12014 , Y10T428/12181 , B22F9/082 , B22F3/02 , B22F3/24
摘要： A method for producing a powder for a magnetic core, in which an alkoxide film formation step and a silicone resin film formation step are carried out to form an insulation film composed of an alkoxide film and a silicone resin film on the surface of a pure iron powder, wherein the alkoxide film formation step comprises immersing a pure iron powder in an alkoxide-containing solution which is prepared by mixing a Si alkoxide having at least one organic group having a polar group comprising at least one of N, P, S and O atoms and an Al alkoxide with a dehydrated organic solvent, and drying to remove the dehydrated organic solvent, thereby forming an alkoxide film comprising an Al-Si-O type composite oxide on the surface of the pure iron powder; and the silicone resin film formation step comprises immersing the pure iron powder having the alkoxide film formed thereon in a silicone resin-containing solution which is prepared by mixing a silicone resin with an organic solvent, and drying to remove the organic solvent, thereby forming a silicone resin film on the alkoxide film.
摘要翻译： 一种制造用于磁芯的粉末的方法，其中进行醇盐膜形成步骤和有机硅树脂膜形成步骤以在纯铁的表面上形成由醇盐膜和硅树脂膜构成的绝缘膜 粉末，其中所述醇盐膜形成步骤包括将纯铁粉浸入含醇盐的溶液中，所述溶液通过混合具有至少一个具有极性基团的有机基团的Si醇盐，所述极性基团包含N，P，S和O中的至少一种 原料和Al醇盐与脱水有机溶剂反应，干燥除去脱水有机溶剂，由此在纯铁粉末的表面上形成包含Al-Si-O型复合氧化物的醇盐膜; 有机硅树脂膜形成工序包括将其上形成有醇盐膜的纯铁粉浸入通过将有机硅树脂与有机溶剂混合制备的含硅树脂的溶液中，并干燥除去有机溶剂，从而形成 硅氧烷树脂膜上的醇盐膜。
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6.发明授权
公开(公告)号：EP2767992B1
公开(公告)日：2017-09-27
申请号：EP12840664.2
申请日：2012-10-09
发明人： SAKUMA, Noritsugu , KISHIMOTO, Hidefumi , MIYAMOTO, Noritaka , KATO, Akira , MANABE, Akira , ICHIGOZAKI, Daisuke , SHOJI, Tetsuya , HARAKAWA, Shoichi
CPC分类号： H01F1/20 , B22F9/04 , B22F2009/048 , C22C33/0278 , C22C38/002 , C22C38/005 , C22C38/10 , C22C2202/02 , H01F1/0571 , H01F1/0577
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公开(公告)号：EP2913831B1
公开(公告)日：2017-04-19
申请号：EP13848858.0
申请日：2013-10-17
CPC分类号： H01F41/0266 , B22F3/14 , B22F3/17 , B22F3/20 , B22F2003/208 , B22F2998/10 , B22F2999/00 , C22C28/00 , H01F1/0576 , H01F41/0273 , B22F2202/05 , B22F2009/048
摘要： Provided is a method for manufacturing a rare-earth magnet through hot deformation processing, capable of manufacturing a rare-earth magnet having high degree of orientation at the entire area of the rare-earth magnet manufactured and high remanence, without increasing processing cost therefor. A method includes: a step of press-forming powder as a rare-earth magnetic material to form a compact S; and a step of performing hot deformation processing to the compact S, thus manufacturing the rare-earth magnet C. The hot deformation processing includes two steps of extruding and upsetting. The extruding is to place a compact S in a die Da, and apply pressure to the compact S' in a heated state with an extrusion punch PD so as to reduce the thickness for extrusion to prepare the rare-earth magnet intermediary body S" having a sheet form, and the upsetting is to apply pressure to the rare-earth magnet intermediary body S" in the thickness direction to reduce the thickness, thus manufacturing the rare-earth magnet C.
摘要翻译： 提供一种通过热变形处理制造稀土类磁铁的方法，能够制造在制造的稀土类磁铁的整个区域上具有高取向度的稀土类磁体，并且具有高的剩磁性，而不增加其加工成本。 一种方法包括：将作为稀土磁性材料的粉末压制成型以形成小型S的步骤; 以及对压块S进行热变形处理的步骤，从而制造稀土磁体C.热变形处理包括挤压和镦锻的两个步骤。 挤出是将小型S放入模具Da中，并用挤压冲头PD在加热状态下对压块S'施加压力，以便减小挤出厚度，从而制备出稀土磁体中间体S“，具有 片材形式，并且镦粗是在厚度方向上向稀土磁体中间体S“施加压力以减小厚度，从而制造稀土磁体C.
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公开(公告)号：EP4095870A1
公开(公告)日：2022-11-30
申请号：EP22175553.1
申请日：2022-05-25
发明人： KANADA, Keiu , SAKAGUCHI, Reimi , ITO, Masaaki , NOMURA, Takuya , ICHIGOZAKI, Daisuke , HIRAOKA, Motoki , AKITA, Mitsutoshi
摘要： The method for manufacturing the Halbach magnet array includes the steps of: (a) magnetizing at least two first magnetic material pieces in a direction parallel to a first direction, and (b) magnetizing at least one second magnetic material piece in a direction parallel to a second direction perpendicular to the first direction, in this order. In the step (a), the first magnetic material pieces and the second magnetic material piece are alternately arranged in the second direction with the first magnetic material pieces being each adhered to the adjacent second magnetic material piece, and the magnetization is performed under a condition in which a residual magnetization ratio rl of the first magnetic material pieces is higher than a residual magnetization ratio r2 of the second magnetic material piece.
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公开(公告)号：EP4036943A1
公开(公告)日：2022-08-03
申请号：EP21213426.6
申请日：2021-12-09
发明人： TAKAZAWA, Mayumi , HAGA, Kazuaki , ICHIGOZAKI, Daisuke , ITO, Masaaki , KOMA, Hisanori , SANO, Shinya , KOMORI, Kensuke , KANADA, Keiu
IPC分类号： H01F41/02
摘要： Provided is a rare earth magnet that allows suppressing deterioration of magnetic properties and a method for manufacturing the same. The rare earth magnet of the present disclosure includes a magnet body containing a rare earth element R1, a transition metal element T, and boron B and includes a main phase. A region in the vicinity of a corner portion of the magnet body of a constituent surface constituting a surface of the magnet body is a processed surface on which a removal process has been performed, and a region closer to a center than the region in the vicinity of the corner portion of the constituent surface is a non-processed surface on which the removal process is not performed.
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公开(公告)号：EP2618349B1
公开(公告)日：2016-11-23
申请号：EP11825292.3
申请日：2011-09-13
CPC分类号： H01F41/005 , B22F3/1028 , B22F3/1035 , B22F3/14 , C22C38/005 , H01F1/0576 , H01F1/0577 , H01F41/0273
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