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    32.
    发明专利
    未知

    公开(公告)号：DE69631810D1

    公开(公告)日：2004-04-15

    申请号：DE69631810

    申请日：1996-09-09

    Applicant: INTERMETALLICS CO LTD

    Inventor： SAGAWA MASATO ,  NAGATA HIROSHI ,  WATANABE TOSHIHIRO ,  MIYOSHI TERUMASA ,  KASAHARA MIZUHO

    IPC: B22F3/00 ,  B30B11/02 ,  B30B15/30 ,  B30B11/00

    Abstract: The present invention relates to a packing method in which a material (p) is fed into a space comprising an opening (4c) for feeding the material and a space (4d) to be packed with said material, and said space is subjected to air tapping, that is, switching of air-pressure from a low air-pressure state to a high air-pressure state alternately, thereby packing the material into the space (4d) at a high packing-density. The use of air tapping for packing a material into a space makes the packing-density of the material uniform.

    33.
    发明专利
    未知

    公开(公告)号：ES2123473T1

    公开(公告)日：1999-01-16

    申请号：ES96114412

    申请日：1996-09-09

    Applicant: INTERMETALLICS CO LTD

    Inventor： SAGAWA MASATO ,  NAGATA HIROSHI ,  WATANABE TOSHIHIRO ,  MIYOSHI TERUMASA ,  KASAHARA MIZUHO

    IPC: B22F3/00 ,  B30B11/02 ,  B30B15/30 ,  B30B11/00

    Abstract: The present invention relates to a packing method in which a material (p) is fed into a space comprising an opening (4c) for feeding the material and a space (4d) to be packed with said material, and said space is subjected to air tapping, that is, switching of air-pressure from a low air-pressure state to a high air-pressure state alternately, thereby packing the material into the space (4d) at a high packing-density. The use of air tapping for packing a material into a space makes the packing-density of the material uniform.

    34.
    发明专利
    未知

    公开(公告)号：DE69311071D1

    公开(公告)日：1997-07-03

    申请号：DE69311071

    申请日：1993-11-19

    Applicant: INTERMETALLICS CO LTD

    Inventor： SAGAWA MASATO ,  NAGATA HIROSHI ,  ITATANI OSAMU

    IPC: B22F3/02 ,  B22F3/12 ,  B30B11/00 ,  B30B11/02 ,  B30B11/08 ,  B30B15/02 ,  H01F41/02

    Abstract: The present invention relates to a method and an apparatus for producing a powder compact in which a recess (3) formed by die (d) and a lower punch (p1) inserted into said die is loaded with rubber mold (m) provided with a cavity (m') shaped according to the desired configuration of the compact, and subsequently, a powder is packed in the cavity of the rubber mold, and an upper punch (p2) is placed on die (d) to press the rubber mold with powder in the space formed by the die, the lower punch and the upper punch, thereby producing a powder compact. Because of the construction in which the upper punch is not inserted into the die but contacted at its bottom with the top of the die thereby carrying out the die pressing, the positioning of the indexed table does not have to be so accurate as in the prior art. The time for positioning is therefore shortened and the productivity is enhanced.

    RFeB-BASED MAGNET PRODUCTION METHOD, RFeB-BASED MAGNET, AND COATING MATERIAL FOR GRAIN BOUNDARY DIFFUSION PROCESS
    37.
    发明公开
    RFeB-BASED MAGNET PRODUCTION METHOD, RFeB-BASED MAGNET, AND COATING MATERIAL FOR GRAIN BOUNDARY DIFFUSION PROCESS 有权
    用于制造晶粒限制扩散工艺的RFEB磁体，RFEB磁体和涂覆材料的方法

    公开(公告)号：EP2977998A4

    公开(公告)日：2016-03-23

    申请号：EP14768462

    申请日：2014-03-13

    Applicant: INTERMETALLICS CO LTD ,  DAIDO STEEL CO LTD

    Inventor： SAGAWA MASATO ,  TAKAGI SHINOBU ,  HASHINO HAYATO

    IPC: H01F41/02 ,  B22F1/00 ,  B22F3/24 ,  B22F9/00 ,  C22C38/00 ,  H01F1/057 ,  H01F1/08

    CPC classification number: H01F1/0571 ,  B22F1/02 ,  B22F3/14 ,  C22C28/00 ,  C22C38/00 ,  C22C2202/02 ,  H01F1/0576 ,  H01F1/0577 ,  H01F41/0253 ,  H01F41/0293

    Abstract: The present invention addresses the problem of providing a method for producing an RFeB system magnet with high coercivity by preventing a coating material from peeling off the surface of a base material during a grain boundary diffusion treatment. Provided is a method for producing an R L 2 Fe 14 B system magnet which is a sintered magnet or a hot-deformed magnet containing, as the main rare-earth element, a light rare-earth element R L which is at least one of the two elements ofNd and Pr, the method including the steps of: applying, to a surface of a base material M of the R L 2 Fe 14 B system magnet, a coating material 10 prepared by mixing a silicone grease 11 and an R H -containing powder 14 containing a heavy rare-earth element R H composed of at least one element selected from the group of Dy, Tb and Ho; and heating the base material M together with the coating material. The silicone having a siloxane bond prevents the coating material 10 from peeling off the surface of the base material M during the heating process. The improved adhesion of the coating material 10 to the base material M facilitates transfer of R H into the grain boundaries of the base material M, whereby the coercivity is increased.

    SINTERED MAGNET PRODUCTION DEVICE AND SINTERED MAGNET PRODUCTION METHOD
    38.
    发明公开
    SINTERED MAGNET PRODUCTION DEVICE AND SINTERED MAGNET PRODUCTION METHOD 审中-公开
    器具，用于产生一种生产烧结磁体的烧结磁铁和方法

    公开(公告)号：EP2955731A4

    公开(公告)日：2016-01-20

    申请号：EP14748535

    申请日：2014-02-03

    Applicant: INTERMETALLICS CO LTD ,  DAIDO STEEL CO LTD

    Inventor： SAGAWA MASATO ,  MIZOGUCHI TETSUHIKO ,  YOSHIKAWA NORIO

    IPC: H01F41/02 ,  B22F3/00 ,  B22F3/02 ,  B22F3/10 ,  H01F1/055 ,  H01F1/057 ,  H01F1/08 ,  H01F13/00

    CPC classification number: H01F41/0273 ,  B22F3/10 ,  C22C2202/02 ,  F27B9/067 ,  F27B9/20 ,  F27B9/36 ,  F27B9/38 ,  F27D5/00 ,  Y02P10/253

    Abstract: The present invention addresses the problem of providing a sintered magnet production system using a press-less method capable of minimizing the distortion of a sintered magnet. It is a system including: a filling device 11 for filling a cavity 211 of a container 21 with alloy powder of a material for a sintered magnet; an orienting section 13 for orienting the alloy powder held in the cavity 211 by applying a magnetic field without applying a mechanical pressure to the alloy powder; and a sintering section 15 for sintering the alloy powder oriented by the orienting section 13, by heating the alloy powder without applying a mechanical pressure to the alloy powder. The orienting section includes: an air-core coil 131; and two ferromagnetic members 132 made of a ferromagnetic material to be arranged within the air-core coil 131 at respective open ends of the air-core coil 131 with a space for containing the container 21 in between. The ferromagnetic members 132 adjust the magnetic field within the air-core coil 131 toward a direction parallel to the axis of the air-core coil 131, whereby the distortion of a sintered magnet is minimized.

    SINTERED NEODYMIUM MAGNET
    39.
    发明公开
    SINTERED NEODYMIUM MAGNET 有权
    烧结钕磁铁

    公开(公告)号：EP2800108A4

    公开(公告)日：2015-08-12

    申请号：EP12863318

    申请日：2012-12-27

    Applicant: INTERMETALLICS CO LTD

    Inventor： SAGAWA MASATO ,  MIZOGUCHI TETSUHIKO

    IPC: H01F1/08 ,  B22F1/00 ,  B22F3/00 ,  C22C33/02 ,  H01F1/057 ,  H01F41/02

    CPC classification number: H01F1/0577 ,  C22C33/02 ,  C22C38/005 ,  C22C2202/02 ,  H01F41/0293

    Abstract: Provided is a NdFeB system sintered magnet which is produced by the grain boundary diffusion method and yet has a high coercive force and squareness ratio with only a small decrease in the maximum energy product. A NdFeB system sintered magnet according to the present invention is a NdFeB system sintered magnet having a base material produced by orienting powder of a NdFeB system alloy and sintering the powder, with Dy and/or Tb (the "Dy and/or Tb" is hereinafter called R H ) attached to and diffused from a surface of the base material through the grain boundary inside the base material by a grain boundary diffusion treatment, wherein the difference C s -C d3 between the R H content C s (wt%) in the grain boundary reaching the surface to which R H is attached and the R H content C d3 (wt%) in the grain boundary at a depth of 3 mm from the aforementioned attachment surface is equal to or smaller than 20 wt%.

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