利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

35 条记录 (耗时 0.029 秒)

    PROCESS FOR PRODUCING RARE-EARTH MAGNET
    1.
    发明申请
    PROCESS FOR PRODUCING RARE-EARTH MAGNET 审中-公开
    生产稀土磁铁的方法

    公开(公告)号：US20150287528A1

    公开(公告)日：2015-10-08

    申请号：US14441695

    申请日：2013-11-13

    申请人： Kazuaki Haga ,  Noritaka Miyamoto ,  Tetsuya Shoji ,  Daisuke Sakuma

    发明人： Kazuaki Haga ,  Noritaka Miyamoto ,  Tetsuya Shoji ,  Daisuke Sakuma

    IPC分类号： H01F41/00

    CPC分类号： H01F41/00 ,  C22C1/00 ,  C22C38/00 ,  C22C2202/00 ,  H01F1/0576 ,  H01F41/0293

    摘要： Provided is a method for manufacturing a rare-earth magnet enabling effective penetrant-diffusion of a melt of modifier alloy powder without generating oxidation reaction or hydroxylation reaction when the modifier alloy powder is used for a better coercive force as well. The method for manufacturing a rare-earth magnet includes: a step of producing a compact S by hot press processing using magnetic powder B including a RE-T-B main phase MP (RE: at least one type of Nd, Pr, and Y) and a grain boundary phase BP around the main phase MP, and performing hot deformation processing to the compact S to produce a rare-earth magnet precursor C; and a step of bringing modifier alloy powder M including a RE-M alloy (M: a metallic element that does not include heavy rare-earth elements) and having an average grain size of 30 μm or more into contact with a surface of the rare-earth magnet precursor C, followed by heating, so that a melt of the modifier alloy powder M is penetrant-diffused into the rare-earth magnet precursor C, to produce the rare-earth magnet RM.

    摘要翻译： 本发明提供一种稀土类磁铁的制造方法，其能够在改性合金粉末用于更好的矫顽力的同时，在不产生氧化反应或羟基化反应的情况下，能够对改性剂合金粉末的熔融物进行有效的渗透扩散。 稀土类磁铁的制造方法包括：使用包含RE-TB主相MP（RE：至少一种Nd，Pr，Y）的磁性粉末B通过热压加工制造压块S的工序;以及 围绕主相MP的晶界相BP，并对压块S进行热变形处理以制备稀土磁体前体C; 将包含RE-M合金（M：不含重稀土类元素的金属元素）和平均粒径为30μm以上的改性剂合金粉末M与稀有金属的表面接触的工序 然后加热，使得改性剂合金粉末M的熔体渗透扩散到稀土磁体前体C中，以制备稀土磁体RM。

    Method for manufacturing rare-earth magnet
    2.
    发明授权
    Method for manufacturing rare-earth magnet 有权
    制造稀土磁铁的方法

    公开(公告)号：US09257227B2

    公开(公告)日：2016-02-09

    申请号：US13750576

    申请日：2013-01-25

    申请人： Kazuaki Haga ,  Noritaka Miyamoto ,  Tetsuya Shoji ,  Noritsugu Sakuma ,  Shinya Omura ,  Motoki Hiraoka

    发明人： Kazuaki Haga ,  Noritaka Miyamoto ,  Tetsuya Shoji ,  Noritsugu Sakuma ,  Shinya Omura ,  Motoki Hiraoka

    IPC分类号： H01F41/00 ,  H01F41/02

    CPC分类号： H01F41/005 ,  B22F3/14 ,  B22F3/26 ,  B22F2009/048 ,  C22C28/00 ,  C22C30/00 ,  C22C38/00 ,  H01F41/0293

    摘要： Provided is a manufacturing method of a rare-earth magnet with high coercive force, including a first step of pressing-forming powder as a rare-earth magnet material to form a compact S, the powder including a RE-Fe—B main phase MP (RE: at least one type of Nd and Pr) and a RE-X alloy (X: metal element) grain boundary phase surrounding the main phase; and second step of bringing a modifier alloy M into contact with the compact S or a rare-earth magnet precursor C obtained by hot deformation processing of the compact S, followed by heat treatment to penetrant diffuse melt of the modifier alloy M into the compact S or the rare-earth magnet precursor C to manufacture the rare-earth magnet RM, the modifier alloy including a RE-Y (Y: metal element and not including a heavy rare-earth element) alloy having a eutectic or a RE-rich hyper-eutectic composition.

    摘要翻译： 提供一种具有高矫顽力的稀土类磁体的制造方法，包括：作为稀土类磁铁材料的压制成形粉末的第一工序，形成小型S，该粉末包括RE-Fe-B主相MP （RE：至少一种Nd和Pr）和围绕主相的RE-X合金（X：金属元素）晶界; 将改性剂合金M与压制体S的热变形加工得到的压块S或稀土类磁体前体C接触，然后进行热处理，将改性合金M的扩散熔融渗透到压块S中 或稀土磁体前体C制造稀土磁体RM，改性合金包括具有共晶或富含RE的超高分子量的RE-Y（Y：金属元素，不包括重稀土元素）合金 共晶组成。

    Method for manufacturing rare-earth magnet
    3.
    发明授权
    Method for manufacturing rare-earth magnet 有权

    公开(公告)号：US09230733B2

    公开(公告)日：2016-01-05

    申请号：US13750576

    申请日：2013-01-25

    申请人： Kazuaki Haga ,  Noritaka Miyamoto ,  Tetsuya Shoji ,  Noritsugu Sakuma ,  Shinya Omura ,  Motoki Hiraoka

    发明人： Kazuaki Haga ,  Noritaka Miyamoto ,  Tetsuya Shoji ,  Noritsugu Sakuma ,  Shinya Omura ,  Motoki Hiraoka

    IPC分类号： H01F41/00 ,  H01F41/02

    摘要： Provided is a manufacturing method of a rare-earth magnet with high coercive force, including a first step of pressing-forming powder as a rare-earth magnet material to form a compact S, the powder including a RE-Fe—B main phase MP (RE: at least one type of Nd and Pr) and a RE-X alloy (X: metal element) grain boundary phase surrounding the main phase; and second step of bringing a modifier alloy M into contact with the compact S or a rare-earth magnet precursor C obtained by hot deformation processing of the compact S, followed by heat treatment to penetrant diffuse melt of the modifier alloy M into the compact S or the rare-earth magnet precursor C to manufacture the rare-earth magnet RM, the modifier alloy including a RE-Y (Y: metal element and not including a heavy rare-earth element) alloy having a eutectic or a RE-rich hyper-eutectic composition.

    RARE EARTH MAGNET AND METHOD FOR PRODUCING SAME
    4.
    发明申请
    RARE EARTH MAGNET AND METHOD FOR PRODUCING SAME 审中-公开
    稀土磁铁及其生产方法

    公开(公告)号：US20150279529A1

    公开(公告)日：2015-10-01

    申请号：US14437898

    申请日：2013-10-08

    申请人： Daisuke Ichigozaki ,  Noritaka Miyamoto ,  Tetsuya Shoji ,  Noritsugu Sakuma ,  Yuya Ikeda

    发明人： Daisuke Ichigozaki ,  Noritaka Miyamoto ,  Tetsuya Shoji ,  Noritsugu Sakuma ,  Yuya Ikeda

    IPC分类号： H01F1/057 ,  C22C30/00 ,  C22C28/00 ,  C22C1/04 ,  H01F41/02 ,  B22F3/12

    CPC分类号： H01F1/0576 ,  B22F3/12 ,  C22C1/04 ,  C22C28/00 ,  C22C30/00 ,  C22C38/00 ,  H01F41/0266 ,  H01F41/0273

    摘要： A method for manufacturing a rare-earth magnet having excellent workability and coercive-force performance in a high-temperature atmosphere and magnetization performance by controlling the content of Pr as the alloy composition to an optimum range, including: press-forming magnetic powder B to form a compact, the magnetic powder B including a RE-Fe-B main phase MP (RE: Nd and Pr) and an RE-X alloy (X: metal element) grain boundary phase BP around the main phase MP having an average grain size of 10 nm to 200 nm; and performing hot deformation processing to the compact to give magnetic anisotropy thereto, thus manufacturing the rare-earth magnet C that is a nano-crystalline magnet. The content of Nd, B, Co and Pr included in the magnetic powder B is Nd: 25 to 35, B: 0.5 to 1.5 and Co: 2 to 7 in terms of at %, and Pr: 0.2 to 5 at % and Fe.

    摘要翻译： 一种通过将作为合金组成的Pr的含量控制在最佳范围内的，在高温气氛中具有优异的加工性和矫顽力性能的稀土类磁铁的制造方法和磁化性能的方法，包括：将成形用磁粉B 形成压块，包含RE-Fe-B主相MP（RE：Nd和Pr）和RE-X合金（X：金属元素）晶界相BP在具有平均颗粒的主相MP周围的磁粉B 尺寸为10nm至200nm; 对该坯体进行热变形处理，得到磁各向异性，由此制造作为纳米晶体磁铁的稀土类磁体C. 包含在磁粉B中的Nd，B，Co和Pr的含量为Nd：25〜35，B：0.5〜1.5，Co：2〜7，以％计，Pr：0.2〜5原子％，Fe 。

    MANUFACTURING METHOD FOR RARE-EARTH MAGNET
    7.
    发明申请
    MANUFACTURING METHOD FOR RARE-EARTH MAGNET 有权
    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。