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    Bonded rare earth magnet and a process for manufacturing the same
    2.
    发明授权
    Bonded rare earth magnet and a process for manufacturing the same 失效
    粘结稀土磁体及其制造方法

    公开(公告)号：US5300156A

    公开(公告)日：1994-04-05

    申请号：US13402

    申请日：1993-02-04

    申请人： Fumihito Mohri ,  Takuji Nomura ,  Shougo Miki

    发明人： Fumihito Mohri ,  Takuji Nomura ,  Shougo Miki

    IPC分类号： H01F1/057 ,  H01F1/02

    CPC分类号： H01F1/0578

    摘要： A highly rustproof resin-bonded magnet made by using a specific rustproofing resin for coating the particles of a magnetic powder, bonding them to form a molded body, or coating its surface, or for two or all of those purposes. The specific resin is selected from ones containing groups of atoms having a power of forming a coordinate bond and a reducing action. More specifically, it is (a) a high molecular compound produced by reacting with an epoxy resin one or more of a polyhydric phenol having adjacent hydroxyls, a polyhydric phenolic carboxylic acid having adjacent hydroxyls, an ester of a polyhydric phenol and a polyhydric alcohol having adjacent hydroxyls, and a polycyclic and polyhydric phenol having adjacent hydroxyls, (b) a redox resin as a reduction agent, or (c) a high molecular compound produced by curing a mixture of ascorbic acid, or a derivative thereof, and an epoxy resin.

    摘要翻译： 通过使用特定的防锈树脂涂覆磁性粉末的颗粒，粘合它们以形成成型体或涂覆其表面，或两种或所有这些目的而制成的高度防锈的树脂粘合磁体。 特定树脂选自含有具有形成配位键的功能的原子基团和还原作用的树脂。 更具体地说，（a）通过与环氧树脂反应制备的高分子化合物，所述高分子化合物与一种或多种具有相邻羟基的多元酚，具有相邻羟基的多元酚羧酸，多元酚的酯和多元醇 相邻的羟基和具有相邻羟基的多环和多元酚，（b）作为还原剂的氧化还原树脂，或（c）通过固化抗坏血酸或其衍生物和环氧树脂的混合物制备的高分子化合物 。

    Bonded rare earth magnet and a process for manufacturing the same
    4.
    发明授权
    Bonded rare earth magnet and a process for manufacturing the same 失效
    粘结稀土磁体及其制造方法

    公开(公告)号：US5240627A

    公开(公告)日：1993-08-31

    申请号：US748769

    申请日：1991-08-22

    申请人： Fumihito Mohri ,  Takuji Nomura ,  Shougo Miki

    发明人： Fumihito Mohri ,  Takuji Nomura ,  Shougo Miki

    IPC分类号： H01F1/057

    CPC分类号： H01F1/0578

    摘要： A highly rustproof resin-bonded magnet made by using a specific rustproofing resin for coating the particles of a magnetic powder, bonding them to form a molded body, or coating its surface, or for two or all of those purposes. The specific resin is selected from ones containing groups of atoms having a power of forming a coordinate bond and a reducing action. More specifically, it is (a) a high molecular compound produced by reacting with an epoxy resin one or more of a polyhydric phenol having adjacent hydroxyls, a polyhydric phenolic carboxylic acid having adjacent hydroxyls, an ester of a polyhydric phenol and a polyhydric alcohol having adjacent hydroxyls, and a polycyclic and polyhydric phenol having adjacent hydroxyls, (b) a redox resin as a reduction agent or (c) a high molecular compound produced by curing a mixture of ascorbic acid, or a derivative thereof, and an epoxy resin.

    摘要翻译： 通过使用特定的防锈树脂涂覆磁性粉末的颗粒，粘合它们以形成成型体或涂覆其表面，或两种或所有这些目的而制成的高度防锈的树脂粘合磁体。 特定树脂选自含有具有形成配位键的功能的原子基团和还原作用的树脂。 更具体地说，（a）通过与环氧树脂反应制备的高分子化合物，所述高分子化合物与一种或多种具有相邻羟基的多元酚，具有相邻羟基的多元酚羧酸，多元酚的酯和多元醇 相邻的羟基和具有相邻羟基的多环和多元酚，（b）作为还原剂的氧化还原树脂，或（c）通过固化抗坏血酸或其衍生物和环氧树脂的混合物制备的高分子化合物。

    Method for producing a magnet roll
    5.
    发明授权
    Method for producing a magnet roll 失效
    磁辊制造方法

    公开(公告)号：US5384957A

    公开(公告)日：1995-01-31

    申请号：US994596

    申请日：1992-12-21

    申请人： Fumihito Mohri ,  Hideko Arai ,  Yoshio Sakata

    发明人： Fumihito Mohri ,  Hideko Arai ,  Yoshio Sakata

    IPC分类号： B29C47/00 ,  B29C70/64 ,  G03G15/09 ,  H01F7/02 ,  H01F41/02 ,  B23P15/00

    CPC分类号： G03G15/0921 ,  B29C47/0016 ,  B29C47/003 ,  B29C70/64 ,  H01F41/028 ,  H01F7/0268 ,  B29C47/00 ,  B29K2995/0008 ,  B29L2031/324 ,  Y10T29/49563

    摘要： A method of producing a magnet roll in which a magnetic property comparable to that obtained by an injection molding can be obtained in spite of an extrusion molding. According to a first embodiment, the yoke width of the magnetic-field extrusion die is varied along an extrusion direction. According to a second embodiment, a pipe filled with resin bonded magnet material is used as a shaft. According to a third embodiment, a shaft having a groove which is filled with magnet is used. According to a fourth embodiment, a shaft provided with surface magnetic charge is used. According to a fifth embodiment, a magnetized region of a shaft is set to be shorter than the length of a main magnet. According to a sixth embodiment, an extruded matter is moved while stored in a sizing metal mold having a magnetic circuit structure. According to a seventh embodiment, a sizing metal mold for storing an extruded matter therein is installed into a heating device and a cooling device equipped with a magnetic circuit structure while storing an extruded matter therein. According to an eighth embodiment, a preliminary magnetization is carried out with magnetic poles whose number is smaller than a finally-required number of magnetic poles, and then a re-magnetization is carried out with the finally-required number of magnetic poles.

    摘要翻译： 制造磁性辊的方法，其中尽管挤压成型，但是可以获得与通过注射成型获得的磁性能相当的磁性能。 根据第一实施例，磁场挤压模的轭宽沿挤出方向变化。 根据第二实施例，使用填充有树脂粘结磁体材料的管作为轴。 根据第三实施例，使用具有填充有磁体的凹槽的轴。 根据第四实施例，使用设有表面磁荷的轴。 根据第五实施例，将轴的磁化区域设定为短于主磁体的长度。 根据第六实施例，挤压物质在存储在具有磁路结构的上胶金属模具中时移动。 根据第七实施例，将用于将挤出物质储存在其中的定型金属模具安装在加热装置和装有磁路结构同时在其中存储挤出物质的冷却装置中。 根据第八实施例，通过数字小于最终所需数量的磁极的磁极进行预磁化，然后用最终所需数量的磁极进行再磁化。