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    R-T-B-BASED SINTERED MAGNET
    43.
    发明公开
    R-T-B-BASED SINTERED MAGNET 审中-公开

    公开(公告)号：EP3624145A1

    公开(公告)日：2020-03-18

    申请号：EP19193813.3

    申请日：2019-08-27

    申请人： Daido Steel Co.,Ltd.

    发明人： NAKAMURA, Michihide ,  ITAKURA, Masaru

    IPC分类号： H01F1/057

    摘要： The present invention relates to an R-T-B-based sintered magnet including: a rare earth element R; a metal element T which is Fe, or includes Fe and Co with which a part of Fe is substituted; boron; and a boride forming element M which is a metal element other than rare earth elements and the metal element T and forms a boride, in which the R-T-B-based sintered magnet includes: a main phase which includes a crystal grain of an R-T-B-based alloy; and a boride phase which includes a compound phase based on the boride of the boride forming element M, and is generated on a preferential growth plane of the crystal grain of the main phase.

    RFEB-BASED SINTERED MAGNET
    44.
    发明公开
    RFEB-BASED SINTERED MAGNET 审中-公开

    公开(公告)号：EP3594975A1

    公开(公告)日：2020-01-15

    申请号：EP19184665.8

    申请日：2019-07-05

    申请人： Daido Steel Co.,Ltd.

    发明人： NAKAMURA, Michihide

    IPC分类号： H01F41/02 ,  H01F1/057

    摘要： The present invention relates to an RFeB-based sintered magnet having a composition consisting of: 24-31% by mass of at least one element selected from the group consisting of Nd, Pr, La and Ce; 0.1-6.5% by mass of at least one element selected from the group consisting of Dy and Tb; 0.8-1.4% by mass of B; 0.03-0.2% by mass of at least one element selected from the group consisting of Zr, Ti, Hf and Nb; 0.8-5.5% by mass of Co; 0.1-1.0% by mass of Cu; 0.1-1.0% by mass of Al; and up to 1.0% by mass of Ga, with a remainder being Fe and unavoidable impurities, in which the composition has a total content of Cu and Al being higher than 0.5% by mass.

    MANUFACTURING METHOD OF A SINTERED MAGNET
    49.
    发明授权
    MANUFACTURING METHOD OF A SINTERED MAGNET 有权

    公开(公告)号：EP3260380B1

    公开(公告)日：2018-08-15

    申请号：EP17182752.0

    申请日：2014-02-03

    申请人： Intermetallics Co. Ltd. ,  Daido Steel Co.,Ltd.

    发明人： SAGAWA, Masato ,  ITATANI, Osamu ,  YOSHIKAWA, Norio

    IPC分类号： B65B1/16 ,  B22F3/02 ,  H01F1/08 ,  H01F41/02 ,  B22F3/00 ,  B30B15/30 ,  B65B7/28 ,  B65B1/04

    CPC分类号： H01F41/0273 ,  B22F3/004 ,  B30B15/302 ,  B65B1/04 ,  B65B1/16 ,  B65B7/28 ,  H01F41/0266

    摘要： The present invention addresses the problem of providing a powder-filling system capable of filling a container with powder at an approximately uniform filling density. The system has: a hopper 11 having an opening 112 configured to be attached to the container 30 in a removable and hermetically closable fashion so that the hopper 11 communicates with the container 30 at the opening 112 for supplying powder to a container 30; a powder supplier 12 for supplying powder to the hopper 11; a gas supplier 13 for repeatedly supplying compressed gas in a pulsed form to the hopper 11, with the hopper 11 attached to the container 30 in a hermetically closed fashion; and a sieve member 113 provided at the opening 112 and having a smaller openings in a region near a side wall of the hopper 11 than in its central region. The smaller openings in the region near the side wall of the hopper 11 where the powder more easily falls from the hopper 11 into the container 30 impedes the fall of the powder in that region and improves the overall uniformity in the filling density.

    NI-BASED SUPERALLOY FOR HOT FORGING
    50.
    发明授权
    NI-BASED SUPERALLOY FOR HOT FORGING 有权

    公开(公告)号：EP3208355B1

    公开(公告)日：2018-07-11

    申请号：EP17154800.1

    申请日：2017-02-06

    申请人： Daido Steel Co.,Ltd.

    发明人： Osaki, Mototsugu ,  Ueta, Shigeki ,  Izumi, Kohki

    IPC分类号： C22C19/05

    CPC分类号： C22C19/056

    摘要： The present invention relates to an Ni-based superalloy for hot forging, containing, in terms of % by mass, C: more than 0.001 % and less than 0.100%, Cr: 11% or more and less than 19%, Co: more than 5% and less than 25%, Fe: 0.1% or more and less than 4.0%, Mo: more than 2.0% and less than 5.0%, W: more than 1.0% and less than 5.0%, Nb: 2.0% or more and less than 4.0%, Al: more than 3.0% and less than 5.0%, and Ti: more than 1.0% and less than 3.0%, with the balance being unavoidable impurities and Ni, in which the component composition satisfies the following two relationships: 3.5 ‰¤ ([Ti]+[Nb])/[Al]×10