METHOD FOR MANUFACTURING SM-FE-N MAGNET, SM-FE-N MAGNET, AND MOTOR HAVING SM-FE-N MAGNET

    公开(公告)号:EP3866180A1

    公开(公告)日:2021-08-18

    申请号:EP19870224.3

    申请日:2019-09-19

    申请人: IHI Corporation

    摘要: A method of manufacturing an Sm-Fe-N magnet includes a sealing step (S10) of filling a metal sheath with a magnet powder including an Sm-Fe-N compound as a main component and sealing the metal sheath, a magnetic field applying step (S12) of applying a magnetic field to the magnet powder sealed in the metal sheath, and magnetizing the magnet powder by magnetically orienting the magnet powder and aligning a direction of magnetic orientation in one direction, a preliminary rolling step (S14) of preliminarily rolling the magnetically oriented magnet powder sealed in the metal sheath to make the magnetically oriented magnet powder into a green compact, and a pressurizing step (S16) of pressurizing the green compact sealed in the metal sheath and densifying the green compact to form a magnet body, wherein in the preliminary rolling step (S14), the preliminary rolling is performed by lightly rolling the magnetically oriented magnet powder sealed in the metal sheath with a pressure smaller than a pressure in the pressurizing step (S16).

    ROTATING MACHINE
    4.
    发明公开
    ROTATING MACHINE 审中-公开

    公开(公告)号:EP4250535A1

    公开(公告)日:2023-09-27

    申请号:EP22871074.5

    申请日:2022-02-07

    申请人: IHI Corporation

    IPC分类号: H02K1/22

    摘要: A rotating machine includes a surface magnet rotor rotatably disposed inside a stator. The rotor includes a shaft member disposed along a rotational axis, and a magnet portion provided on an outer circumferential side of the shaft member and forming alternating opposite magnetic poles along a circumferential direction. The shaft member is formed to have a cross-sectional area in a d-axis direction of the magnet portion different from a cross-sectional area in a q-axis direction of the magnet portion in a cross-section perpendicular to the rotational axis.

    RARE EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE EARTH PERMANENT MAGNET
    5.
    发明公开
    RARE EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE EARTH PERMANENT MAGNET 审中-公开
    用于制造稀土永磁稀土永磁和方法

    公开(公告)号:EP3067900A1

    公开(公告)日:2016-09-14

    申请号:EP14860236.0

    申请日:2014-11-04

    申请人: IHI Corporation

    摘要: A magnetic property of a rare earth permanent magnet containing neodymium, iron, and boron is enhanced.
    [Solution]
    The present invention is a rare earth permanent magnet with a compound represented by a following expression (1) as a main phase:
    [Chem. 1]

            Nd 2 Fe 14 B (1-x) M x      (1)

    In the expression (1), M represents an element selected from any one of cobalt, beryllium, lithium, aluminum, and silicon and x satisfies 0.01≤x≤0.25. The main phase has an Nd-Fe-B layer and an Fe layer periodically and part of boron is substituted with any one or more types of elements selected from a group consisting of cobalt, beryllium, lithium, aluminum, and silicon. Furthermore, the main phase contains terbium and praseodymium in addition to the above-mentioned constituents. The rare earth permanent magnet further includes a grain boundary phase containing any one or more types of elements selected from a group consisting of aluminum, copper, niobium, zirconium, titanium, and gallium.

    摘要翻译: 稀土类永久磁铁含有钕,铁和硼的磁特性提高。 [解决方法]本发明是具有由以下表达式(1)作为主相表示的化合物的稀土类永久磁铁:[化学式 1]€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒNd2 Fe 14 B系(1-X)的M×€ƒ€ƒ€ƒ€ƒ€ƒ(1)在表达式(1),M 从钴,铍,锂,铝,和硅中的任一个选定的元件的darstellt X SATIS外资企业00:01‰¤x‰¤0.25。 主相具有的Nd-Fe-B层和Fe层定期和硼的一部分取代有任何一个或多个类型从一组由钴。铍,锂,铝和硅中选择的元素。 进一步,主相含有除了上述成分铽和镨。 该稀土永磁铁还包括晶界相包含任何一个或多个类型从一组选自由铝,铜,铌,锆,钛,镓和所选元素。