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1. 发明授权

US09859055B2 Manufacturing method for rare-earth magnet 有权
公开(公告)号：US09859055B2
公开(公告)日：2018-01-02
申请号：US14435228
申请日：2013-10-04
申请人： Noritaka Miyamoto , Daisuke Ichigozaki , Tetsuya Shoji , Eisuke Hoshina , Akira Kano , Osamu Yamashita
发明人： Noritaka Miyamoto , Daisuke Ichigozaki , Tetsuya Shoji , Eisuke Hoshina , Akira Kano , Osamu Yamashita
IPC分类号： C22C33/02 , B22F3/02 , H01F41/02 , B22F3/14 , C22C38/00 , H01F1/057 , B22F3/17 , H01F1/08 , B22F1/00
CPC分类号： H01F41/0266 , B22F1/0044 , B22F3/02 , B22F3/14 , B22F3/17 , B22F2998/10 , B22F2999/00 , C22C33/02 , C22C38/00 , C22C38/002 , C22C38/005 , C22C2202/02 , H01F1/0576 , H01F1/08 , H01F41/0273 , B22F2009/048 , B22F2202/05
摘要： Provided is a method for manufacturing a rare-earth magnet capable of manufacturing a rare-earth magnet with high degree of orientation by sufficient plastic deformation while suppressing cracks at the side faces of a compact that is plastic-deformed during the hot deformation processing. The method includes a step of preparing a compact S, preparing a plastic processing mold including a die D in which a cavity Ca is provided, and punches P that are slidable in the cavity Ca, the cavity Ca having a cross section that is larger in cross-sectional dimensions than a cross section of the compact S that is orthogonal to a pressing direction by the punches P; and a step of placing the compact S in the cavity Ca and performing hot deformation processing, thus manufacturing an orientational magnet C. Let that W1 denotes a length of a short side of the cross section of the cavity Ca and t1 denotes a length of a side of the cross section of the compact S that is placed in the cavity Ca, the side corresponding to the short side of the cavity Ca, t1/W1 is within a range of 0.55 to 0.85, and from some stage during the hot deformation processing, a part of the compact S is constrained at a side face of the cavity Ca so that deformation of the compact is suppressed, but another part of the compact is in a non-constraint state.

2. 发明申请

US20150279559A1 MANUFACTURING METHOD FOR RARE-EARTH MAGNET 有权
标题翻译：稀土磁铁制造方法
公开(公告)号：US20150279559A1
公开(公告)日：2015-10-01
申请号：US14435228
申请日：2013-10-04
申请人： Noritaka Miyamoto , Daisuke Ichigozaki , Tetsuya Shoji , Eisuke Hoshina , Akira Kano , Osamu Yamashita
发明人： Noritaka Miyamoto , Daisuke Ichigozaki , Tetsuya Shoji , Eisuke Hoshina , Akira Kano , Osamu Yamashita
IPC分类号： H01F41/02 , B22F3/02 , H01F1/08 , C22C33/02 , B22F3/17 , H01F1/057 , B22F3/14 , C22C38/00
CPC分类号： H01F41/0266 , B22F1/0044 , B22F3/02 , B22F3/14 , B22F3/17 , B22F2998/10 , B22F2999/00 , C22C33/02 , C22C38/00 , C22C38/002 , C22C38/005 , C22C2202/02 , H01F1/0576 , H01F1/08 , H01F41/0273 , B22F2009/048 , B22F2202/05
摘要： Provided is a method for manufacturing a rare-earth magnet capable of manufacturing a rare-earth magnet with high degree of orientation by sufficient plastic deformation while suppressing cracks at the side faces of a compact that is plastic-deformed during the hot deformation processing. The method includes a step of preparing a compact S, preparing a plastic processing mold including a die D in which a cavity Ca is provided, and punches P that are slidable in the cavity Ca, the cavity Ca having a cross section that is larger in cross-sectional dimensions than a cross section of the compact S that is orthogonal to a pressing direction by the punches P; and a step of placing the compact S in the cavity Ca and performing hot deformation processing, thus manufacturing an orientational magnet C. Let that W1 denotes a length of a short side of the cross section of the cavity Ca and t1 denotes a length of a side of the cross section of the compact S that is placed in the cavity Ca, the side corresponding to the short side of the cavity Ca, t1/W1 is within a range of 0.55 to 0.85, and from some stage during the hot deformation processing, a part of the compact S is constrained at a side face of the cavity Ca so that deformation of the compact is suppressed, but another part of the compact is in a non-constraint state.
摘要翻译：本发明提供一种能够通过充分的塑性变形制造具有高取向度的稀土类磁体的稀土类磁体的制造方法，同时抑制在热变形加工过程中塑性变形的压实体的侧面的裂纹。该方法包括制备压块S的步骤，制备包括其中设置有空腔Ca的模具D的塑料加工模具和可在空腔Ca中滑动的冲孔P，空腔Ca的横截面大于与通过冲头P与按压方向正交的压块S的截面的横截面尺寸; 以及将压块S放置在腔Ca中并进行热变形处理的步骤，由此制造取向磁体C.令W1表示空腔Ca的截面的短边的长度，t1表示长度放置在空腔Ca中的压块S的横截面侧，与空腔Ca，t1 / W1的短边对应的一侧在0.55〜0.85的范围内，并且在热变形加工期间的某个阶段压块S的一部分被限制在空腔Ca的侧面，从而抑制了压实体的变形，而压块的另一部分处于非约束状态。

3. 发明申请

US20100045120A1 MAGNETIC POWDER, DUST CORE, MOTOR, AND REACTOR 审中-公开
标题翻译：磁粉，粉芯，电机和反应器
公开(公告)号：US20100045120A1
公开(公告)日：2010-02-25
申请号：US12518408
申请日：2007-12-28
申请人： Tomoyasu Kitano , Eisuke Hoshina , Daisuke Ichigozaki
发明人： Tomoyasu Kitano , Eisuke Hoshina , Daisuke Ichigozaki
IPC分类号： H02K15/12 , H01F1/26 , H01F27/255
CPC分类号： H01F3/08 , B22F1/0062 , B22F1/02 , B22F2998/10 , C22C2202/02 , H01F1/26 , H01F1/33 , H01F41/0246 , H02K1/02 , H02K15/02 , B22F1/007
摘要： According to the present invention, a magnetic powder for a dust core, which is excellent in terms of insulation properties without causing a decrease in the dust core magnetic flux density, a dust core comprising the magnetic powder, and a motor or a reactor having a core composed of the dust core are provided. Therefore, a magnetic powder 10 for a dust core is characterized in that relatively hard oxide fine powder particles 2 are dispersed over and fixed to the surface of a soft magnetic metal powder particle 1, and that a relatively soft insulating coat 3 is fixed to the oxide fine powder particles 2 and portions where the dispersed and fixed oxide fine powder particles 2 do not exist on the surface of the soft magnetic metal powder particle 1.
摘要翻译：根据本发明，一种用于防尘芯的磁性粉末，其绝缘性能优异，而不会降低粉尘磁心的磁通密度，包含磁性粉末的压粉磁心，以及电动机或具有提供由防尘芯组成的芯。因此，用于防尘芯的磁粉10的特征在于，将较硬的氧化物细粉末颗粒2分散并固定在软磁性金属粉末颗粒1的表面上，并且将相对柔软的绝缘涂层3固定到氧化物细粉末颗粒2和在软磁性金属粉末颗粒1的表面上不存在分散和固定的氧化物细粉末颗粒2的部分。

4. 发明申请

US20100266861A1 POWDER FOR MAGNETIC CORE, POWDER MAGNETIC CORE AND THEIR PRODUCTION METHODS 审中-公开
标题翻译：磁芯粉，粉末磁芯及其生产方法
公开(公告)号：US20100266861A1
公开(公告)日：2010-10-21
申请号：US12740741
申请日：2008-10-30
申请人： Shin Tajima , Masaaki Tani , Daisuke Okamoto , Eisuke Hoshina , Hidefumi Kishimoto , Daisuke Ichigozaki
发明人： Shin Tajima , Masaaki Tani , Daisuke Okamoto , Eisuke Hoshina , Hidefumi Kishimoto , Daisuke Ichigozaki
IPC分类号： H01F3/08 , B22F1/02 , H01F41/02
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; 有机硅树脂成膜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，并干燥以除去有机溶剂，从而形成硅氧烷树脂膜上的醇盐膜。

5. 发明申请

US20100239879A1 IRON POWDER FOR DUST CORES 有权
标题翻译：铁粉铁粉
公开(公告)号：US20100239879A1
公开(公告)日：2010-09-23
申请号：US12733699
申请日：2008-12-11
申请人： Takashi Kawano , Noriko Makiishi , Tatsuhiko Hiratani , Naomichi Nakamura , Yusuke Oishi , Eisuke Hoshina , Toshiya Yamaguchi , Daisuke Okamoto , Takeshi Hattori
发明人： Takashi Kawano , Noriko Makiishi , Tatsuhiko Hiratani , Naomichi Nakamura , Yusuke Oishi , Eisuke Hoshina , Toshiya Yamaguchi , Daisuke Okamoto , Takeshi Hattori
IPC分类号： B22F1/02 , B32B15/02
CPC分类号： H01F1/33 , B22F1/02 , B22F2998/00 , H01F1/24 , Y10T428/12181 , Y10T428/2991 , Y10T428/2993 , B22F2301/35 , B22F2302/256
摘要： Since a surface of an iron powder is covered with an oxide film composed of a Si-based oxide in which the ratio of Si to Fe satisfies Si/Fe≧0.8 on an atomic number basis, an iron powder for dust cores is provided which can be formed into a dust core having a high resistivity and hence having a low iron loss without degrading the mechanical strength.
摘要翻译：由于铁粉的表面被由Si与Fe的比例以Si /Fe≥0.8为基准的Si系氧化物构成的氧化膜覆盖，因此提供了一种用于防尘芯的铁粉，形成具有高电阻率并因此具有低铁损而不降低机械强度的防尘芯。

6. 发明授权

US07714476B2 Rotating electrical machine core and rotating electrical machine 失效
标题翻译：旋转电机芯和旋转电机
公开(公告)号：US07714476B2
公开(公告)日：2010-05-11
申请号：US12086003
申请日：2007-01-15
申请人： Eisuke Hoshina , Toshiya Yamaguchi , Yasuhiro Endo , Kazutaka Tatematsu , Yutaka Komatsu
发明人： Eisuke Hoshina , Toshiya Yamaguchi , Yasuhiro Endo , Kazutaka Tatematsu , Yutaka Komatsu
IPC分类号： H02K1/18
CPC分类号： H02K1/148
摘要： A core comprises a plurality of core split members having yoke portions and tooth portions and arranged in such a circumferential shape that the yoke portions contact with each other while the tooth portions being directed inward. The core further comprises a ring contacting with the yoke portions, and stoppers mounted on the outer face sides of the yoke portions for fixing the ring on the yoke portions. The yoke portions and the ring are formed in corrugated shape to mesh with each other, and the stoppers are formed with projections that engage with the inner side of the ring. This structure provides both the rotating electrical machine core having the core split members arranged in the circumferential shape and fastened to each other while preventing occurrence of a stress and a positional displacement between the core split members, and a rotating electrical machine.
摘要翻译：芯部包括具有轭部和齿部的多个芯分割构件，并且以这样的圆周方式设置，使得磁轭部彼此接触，同时将齿部向内指向。芯还包括与轭部接触的环，以及安装在轭部的外表面侧的止动件，用于将环固定在轭部上。轭部和环形成为波纹形状以彼此啮合，并且止动件形成有与环的内侧接合的突起。这种结构提供了具有排列成圆周形状并且彼此紧固的芯分离构件的旋转电机芯，同时防止了芯分离构件和旋转电机之间的应力和位置偏移的发生。

7. 发明申请

US20090127970A1 Stator core element, production apparatus, and production method 审中-公开
标题翻译：定子核心元件，生产设备和生产方法
公开(公告)号：US20090127970A1
公开(公告)日：2009-05-21
申请号：US11919413
申请日：2006-09-07
申请人： Kazutaka Tatematsu , Yasuhiro Endo , Toshiya Yamaguchi , Eisuke Hoshina
发明人： Kazutaka Tatematsu , Yasuhiro Endo , Toshiya Yamaguchi , Eisuke Hoshina
IPC分类号： H02K1/14 , H02K15/02
CPC分类号： H02K1/02 , H02K1/148 , H02K15/022 , Y10T29/49009
摘要： A stator core is composed of two compacts of compressed powder magnetic cores joined in the axial direction. A yoke portion includes projections projecting axially outward from end surfaces in the axial direction of a tooth. The length in the axial direction of the tooth is gradually reduced radially toward the outside of the stator core, and the length in the circumferential direction of the tooth is gradually increased radially toward the outside of the stator core. A molding is formed by pressing magnetic powder placed in a die by a single punch placed on one side in the axial direction and two punches placed parallel to each other on the other side in the axial direction. The stator core for a rotary electric machine is thus produced.
摘要翻译：定子铁芯由沿轴向连接的压缩粉末磁芯的两个压块构成。轭部包括从牙齿的轴向方向上的端面向轴向外侧突出的凸起。齿的轴向长度朝向定子铁芯的外侧逐渐减小，并且齿的圆周方向的长度朝向定子铁心的外侧逐渐增大。通过在轴向方向上一侧设置的单个冲头压入放置在模具中的磁性粉末，在轴向另一侧平行放置两个冲头，形成成型体。因此制造了用于旋转电机的定子芯。

8. 发明申请

US20090085423A1 Rotating Electrical Machine Core and Rotating Electrical Machine 失效
标题翻译：旋转电机芯和旋转电机
公开(公告)号：US20090085423A1
公开(公告)日：2009-04-02
申请号：US12086003
申请日：2007-01-15
申请人： Eisuke Hoshina , Toshiya Yamaguchi , Yasuhiro Endo , Kazutaka Tatematsu , Yutaka Komatsu
发明人： Eisuke Hoshina , Toshiya Yamaguchi , Yasuhiro Endo , Kazutaka Tatematsu , Yutaka Komatsu
IPC分类号： H02K1/18
CPC分类号： H02K1/148
摘要： A core comprises a plurality of core split members having yoke portions and tooth portions and arranged in such a circumferential shape that the yoke portions contact with each other while the tooth portions being directed inward. The core further comprises a ring contacting with the yoke portions, and stoppers mounted on the outer face sides of the yoke portions for fixing the ring on the yoke portions. The yoke portions and the ring are formed in corrugated shape to mesh with each other, and the stoppers are formed with projections that engage with the inner side of the ring. This structure provides both the rotating electrical machine core having the core split members arranged in the circumferential shape and fastened to each other while preventing occurrence of a stress and a positional displacement between the core split members, and a rotating electrical machine.
摘要翻译：芯部包括具有轭部和齿部的多个芯分割构件，并且以这样的圆周方式设置，使得磁轭部彼此接触，同时将齿部向内指向。芯还包括与轭部接触的环，以及安装在轭部的外表面侧的止动件，用于将环固定在轭部上。轭部和环形成为波纹形状以彼此啮合，并且止动件形成有与环的内侧接合的突起。这种结构提供了具有排列成圆周形状并且彼此紧固的芯分离构件的旋转电机芯，同时防止了芯分离构件和旋转电机之间的应力和位置偏移的发生。

9. 发明授权

US08916268B2 Iron powder for dust cores 有权
标题翻译：防尘芯铁粉
公开(公告)号：US08916268B2
公开(公告)日：2014-12-23
申请号：US12733699
申请日：2008-12-11
申请人： Takashi Kawano , Noriko Makiishi , Tatsuhiko Hiratani , Naomichi Nakamura , Yusuke Oishi , Eisuke Hoshina , Toshiya Yamaguchi , Daisuke Okamoto , Takeshi Hattori
发明人： Takashi Kawano , Noriko Makiishi , Tatsuhiko Hiratani , Naomichi Nakamura , Yusuke Oishi , Eisuke Hoshina , Toshiya Yamaguchi , Daisuke Okamoto , Takeshi Hattori
IPC分类号： B22F1/02 , B32B15/02 , H01F1/33 , H01F1/24
CPC分类号： H01F1/33 , B22F1/02 , B22F2998/00 , H01F1/24 , Y10T428/12181 , Y10T428/2991 , Y10T428/2993 , B22F2301/35 , B22F2302/256
摘要： An iron powder for dust cores is provided which can be formed into a dust core having a high resistivity and having a low iron loss without degrading the mechanical strength. The iron powder for dust cores includes an iron powder and an oxide film on the surface thereof, wherein the oxide film is composed of a Si-based oxide in which the ratio of Si to Fe satisfies Si/Fe≧0.8 on an atomic number basis.
摘要翻译：提供了用于防尘芯的铁粉，其可以形成为具有高电阻率并具有低铁损的防尘芯，而不降低机械强度。用于防尘芯的铁粉在其表面上包括铁粉和氧化物膜，其中氧化物膜由其中Si与Fe的比率以原子数为基准满足Si /Fe≥0.8的Si基氧化物。

10. 发明授权

US08337638B2 Powder for dust core and method for producing the same 有权
标题翻译：粉芯粉及其制造方法
公开(公告)号：US08337638B2
公开(公告)日：2012-12-25
申请号：US12988286
申请日：2009-04-17
申请人： Yusuke Oishi , Eisuke Hoshina , Toshiya Yamaguchi , Kazuhiro Kawashima
发明人： Yusuke Oishi , Eisuke Hoshina , Toshiya Yamaguchi , Kazuhiro Kawashima
IPC分类号： H01F1/147 , H01F1/20
CPC分类号： H01F1/24 , B22F1/0085 , B22F1/02 , B22F2999/00 , C22C38/02 , C22C2202/02 , H01F1/33 , B22F2207/01
摘要： A powder for a dust core comprising a silicon-containing layer formed within a depth of less than 0.15 D from the surface of the surface layer of a soft magnetic metal powder having a particle diameter D and a method for producing the same are provided. The method for producing a powder for a dust core 10 comprising a silicon-containing layer 2 comprises performing silicon impregnation of the surface of a soft magnetic metal powder (particle) 1 containing a carbon element, wherein: silicon impregnation is performed by bringing a powder for silicon impregnation containing at least a silicon compound into contact with the surface of a soft magnetic metal powder 1, heating the powder for silicon impregnation to dissociate a silicon element from the silicon compound, and then diffusing the thus dissociated silicon element throughout the surface layer of the soft magnetic metal powder via impregnation; and silicon impregnation is performed under a diffusion atmosphere allowing dissociation where the reaction rate at which the silicon element is dissociated is higher than the diffusion rate at which the silicon element is diffused throughout the surface layer of the soft magnetic metal powder via impregnation.
摘要翻译：提供了一种粉尘芯，其包括从具有粒径D的软磁性金属粉末的表面的表面的小于0.15D的深度形成的含硅层及其制造方法。包含含硅层2的粉尘芯10的粉末的制造方法包括对包含碳元素的软磁性金属粉末（颗粒）1的表面进行硅浸渍，其中：通过使粉末对于含有至少硅化合物的硅浸渍与软磁性金属粉末1的表面接触，加热硅浸渍用粉末以从硅化合物解离硅元素，然后使由此解离的硅元素扩散到整个表面层的软磁金属粉末通过浸渍; 并且在扩散气氛下进行硅浸渍，该扩散气氛允许解离，其中硅元素解离的反应速率高于硅元素通过浸渍遍及软磁性金属粉末的表面层扩散的扩散速率。

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