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    Method for flexibly sintering rare earth permanent magnetic alloy and sintering equipment thereof
    12.
    发明申请
    Method for flexibly sintering rare earth permanent magnetic alloy and sintering equipment thereof 审中-公开
    稀土永磁合金的柔性烧结方法及其烧结设备

    公开(公告)号：US20140348690A1

    公开(公告)日：2014-11-27

    申请号：US14367897

    申请日：2013-02-05

    Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

    Inventor： Xiaodong Chen ,  Baoyu Sun

    IPC: H01F41/02

    CPC classification number: H01F41/0266 ,  B22F3/003 ,  C22C2202/02 ,  F27B17/02 ,  F27B21/00 ,  F27D7/06

    Abstract: A method for flexibly sintering rare earth permanent magnetic alloy comprises: (1) weighing fine powder of rare earth permanent magnetic alloy, loading the fine powder in moulds, and orientedly compacting the fine powder in a press machine and in inert atmosphere to obtain blanks and loading the blanks into charging boxes; (2) opening the two isolating valves connected with each other; wherein after a first rolling wheel transmission in the second conveying vehicle transfers the charging tray into the first chamber of the glove box, the two isolating valves are closed, and the second conveying vehicle leaves; (3) locking two matching flanges of the two isolating valves tightly; (4) locking matching flanges tightly; and (5) processing the blanks with heating and heat preservation according to a preset process curve; wherein the blanks are sintered at a highest temperature of 1200° C.

    Abstract translation: 一种柔性烧结稀土永磁合金的方法包括：（1）称量稀土永磁合金细粉，将细粉加载在模具中，并在压机和惰性气氛中定向压实细粉，得到坯料和 将坯料装入充电箱; （2）打开两个彼此连接的隔离阀; 其特征在于，在所述第二输送车辆中的第一滚轮传动后，将所述充电托盘输送到所述手套箱的第一室内，所述两个隔离阀关闭，所述第二输送车辆离开; （3）紧紧地锁住两个隔离阀的两个匹配法兰; （4）紧紧配合法兰; （5）按照预设的工艺曲线加热保温坯料; 其中坯料在1200℃的最高温度下烧结

    NdFeB magnet containing cerium and manufacturing method thereof
    13.
    发明授权
    NdFeB magnet containing cerium and manufacturing method thereof 有权

    公开(公告)号：US10658094B2

    公开(公告)日：2020-05-19

    申请号：US15389568

    申请日：2016-12-23

    Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

    Inventor： Baoyu Sun ,  Yongli Duan

    IPC: H01F1/057 ,  H01F41/02 ,  B22F3/16 ,  B22F9/04 ,  C22C38/16 ,  C22C38/14 ,  C22C38/10 ,  C22C38/06 ,  C22C38/00 ,  C22C33/04 ,  B22F3/10 ,  C21D8/12 ,  C21D9/00

    Abstract: A NdFeB magnet containing cerium and a manufacturing method thereof are provided. The manufacturing method includes steps of: refining a part of raw materials pure iron, ferro-boron, and rare earth fluoride in a crucible, adding a rest of the raw materials into the crucible and refining, casting a refined solution to a surface of a water-cooled rotation roller through a tundish and forming alloy flakes, processing the alloy flakes containing at least two different compositions with hydrogen decrepitation, milling powders, magnetic field pressing, vacuum presintering, machining and sintering, and obtaining the NdFeB magnet containing cerium. The NdFeB magnet containing cerium has a density of 7.5-7.7 g/cm3 and an average particle size of 3-7 μm; comprises a main phase and a grain boundary phase distributed around the main phase. A composite phase containing Tb is provided between the main phase and the grain boundary phase.

    Method and equipment for processing NdFeB rare earth permanent magnetic alloy with hydrogen pulverization
    15.
    发明申请
    Method and equipment for processing NdFeB rare earth permanent magnetic alloy with hydrogen pulverization 审中-公开
    用氢粉碎处理钕铁硼稀土永磁合金的方法和设备

    公开(公告)号：US20150243417A1

    公开(公告)日：2015-08-27

    申请号：US14708460

    申请日：2015-05-11

    Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

    Inventor： Baoyu Sun

    IPC: H01F1/057 ,  B22F3/12 ,  B22F3/24 ,  C22C38/00 ,  B22F9/04 ,  B22F9/02 ,  C21D3/06 ,  H01F41/02 ,  B22F5/00

    CPC classification number: H01F1/0577 ,  B22F9/023 ,  B22F2998/10 ,  B22F2999/00 ,  C21D3/06 ,  C22C38/002 ,  C22C38/005 ,  C22C38/10 ,  C22C38/16 ,  C22C38/32 ,  H01F1/0573 ,  H01F41/0273 ,  B22F1/0055 ,  B22F9/04 ,  B22F2009/044 ,  B22F3/02 ,  B22F3/1021 ,  B22F3/1028 ,  B22F2003/247 ,  B22F2201/20 ,  B22F2201/11

    Abstract: A method and an equipment for processing NdFeB rare earth permanent magnetic alloy with a hydrogen pulverization are provided. The method includes steps of: providing a continuous hydrogen pulverization equipment; while driving by a transmission device, passing a charging box loaded with rare earth permanent magnetic alloy flakes orderly through a hydrogen absorption chamber, having a temperature of 50-350° C. for absorbing hydrogen, a heating and dehydrogenizing chamber, having a temperature of 600-900° C. for dehydrogenating, and a cooling chamber of the continuous hydrogen pulverization equipment; receiving the charging box by a discharging chamber through a discharging valve; pouring out the alloy flakes after the hydrogen pulverization into a storage tank at a lower part of the discharging chamber; sealing up the storage tank under a protection of nitrogen; and, moving the charging box out through a discharging door of the discharging chamber and re-loading, for repeating the previous steps.

    Abstract translation: 提供了一种用于处理氢粉碎的NdFeB稀土永磁合金的方法和设备。 该方法包括以下步骤：提供连续氢气粉碎设备; 当通过传动装置驱动时，将装有稀土永磁合金的充电箱顺序地通过氢吸收室，温度为50-350℃，用于吸收氢气，加热和脱氢室，其温度为 600-900℃进行脱氢，连续氢粉碎设备的冷却室; 通过排放阀通过排放室接收充电箱; 将氢粉碎后的合金薄片倒入放电室下部的储罐中; 在氮气保护下密封储罐; 并且通过排放室的排放门将充电箱移出并重新加载，以重复前述步骤。

    Continuous sintering method for rare earth permanent magnetic alloy and equipment therefor
    16.
    发明申请
    Continuous sintering method for rare earth permanent magnetic alloy and equipment therefor 审中-公开
    稀土永磁合金的连续烧结方法及其设备

    公开(公告)号：US20140127072A1

    公开(公告)日：2014-05-08

    申请号：US14075732

    申请日：2013-11-08

    Applicant: SHENYANG GENERAL MAGNETIC CO., LTD

    Inventor： Xiaodong Chen ,  Baoyu Sun

    IPC: H01F41/02

    CPC classification number: H01F1/0577

    Abstract: A continuous sintering method for rare earth permanent magnetic alloy comprises: connecting a preparation chamber, a glove chamber and a sealed transmission chamber, a sealed chamber, a charging chamber, a preheating chamber, a heating and de-airing chamber, a sintering chamber and a cooling chamber one after another. A press formed blank of rare earth permanent magnetic alloy powder is transmitted under oxygen free condition, and processed with heating and de-airing, sintering and cooling. The preparation chamber, the glove chamber and the sealed transmission chamber are transmitted by bottom rollers, transmissions of other chambers are provided on a top portion of each chamber, and conveyed by roller rails. The rollers of the charging rack are suspended on rails of the transmissions. The drawer model charging rack is capable of loading multiple charging box.

    Abstract translation: 稀土永磁合金的连续烧结方法包括：将准备室，手套室和密封的传输室连接，密封室，充电室，预热室，加热和除气室，烧结室和 一个冷却室一个接一个。 稀土永磁合金粉末压坯成型无氧条件下传输，加热，脱气，烧结和冷却处理。 准备室，手套室和密封的传输室由底辊传递，其他室的传输设置在每个室的顶部，并由辊轨传送。 充电架的滚轮悬挂在变速箱的导轨上。 抽屉式充电架能够装载多个充电箱。

    Continuous hydrogen pulverization method and production device of rare earth permanent magnetic alloy
    17.
    发明申请
    Continuous hydrogen pulverization method and production device of rare earth permanent magnetic alloy 审中-公开
    连续氢粉碎法和稀土永磁合金的生产装置

    公开(公告)号：US20140123811A1

    公开(公告)日：2014-05-08

    申请号：US14075801

    申请日：2013-11-08

    Applicant: SHENYANG GENERAL MAGNETIC CO., LTD

    Inventor： Xiaodong Chen ,  Baoyu Sun

    IPC: H01F41/00

    CPC classification number: H01F1/0573 ,  H01F1/0553

    Abstract: A continuous hydrogen pulverization method of a rare earth permanent magnetic alloy includes: providing a hydrogen adsorption room, a heating dehydrogenation room and a cooling room in series, applying hydrogen adsorption, heating dehydrogenation and cooling on a rare earth permanent magnetic alloy in the production device at the same time, wherein collecting and storing under an inert protection atmosphere can also be provided. Continuous production is provided under vacuum and the inert protection atmosphere in such a manner that an oxygen content of the pulverized powder is low and a proportion of single crystal in the powder is high.

    Abstract translation: 稀土永磁合金的连续氢粉碎方法包括：提供氢吸附室，加热脱氢室和串联的冷却室，在制造装置中对稀土永磁合金进行氢吸附，加热脱氢和冷却 同时，还可以提供在惰性保护气氛下的收集和储存。 在真空和惰性保护气氛下连续生产粉碎粉末的氧含量低，粉末中单晶的比例高。

    High-performance NdFeB permanent magnet produced with NdFeB scraps and production method thereof
    19.
    发明授权
    High-performance NdFeB permanent magnet produced with NdFeB scraps and production method thereof 有权

    公开(公告)号：US10468167B2

    公开(公告)日：2019-11-05

    申请号：US15401262

    申请日：2017-01-09

    Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

    Inventor： Baoyu Sun ,  Yongli Duan

    IPC: H01F1/057 ,  H01F41/02 ,  B22F7/02

    Abstract: A high-performance NdFeB permanent magnet produced with NdFeB scraps and a production method thereof are provided. The production method includes steps of: under a vacuum condition, sending a portion of raw materials, including pure iron, ferro-iron, the NdFeB scraps and rare earth fluorides, into a crucible, refining, and obtaining a first melting liquid; absorbing slags by a slag cleaning device, and moving the slag cleaning device out; sending a rest of raw materials into the crucible, refining the first melting liquid and the rest of raw materials in the crucible, and obtaining a second melting liquid; pouring the second melting liquid after refining onto a surface of a water-cooled rotation roller through a tundish, and forming alloy flakes; processing the alloy flakes with hydrogen decrepitation, milling the alloy flakes into powders by a jet mill, then magnetic field pressing, presintering and sintering.

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