公开(公告)号：US20170117073A1

公开(公告)日：2017-04-27

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

CPC classification number: H01F1/0577 ,  H01F41/0273

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.

公开(公告)号：US20170098496A1

公开(公告)日：2017-04-06

申请号：US15382672

申请日：2016-12-18

Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

Inventor： Baoyu Sun ,  Yongli Duan

IPC: H01F1/057 ,  C22C38/16 ,  C22C38/14 ,  C22C38/10 ,  C22C38/06 ,  C22C38/00 ,  C22C33/04 ,  B22F9/08 ,  B22F1/00 ,  B22F9/04 ,  B22F3/16 ,  B22F3/087 ,  B22F3/10 ,  C21D9/00 ,  C21D6/00 ,  H01F41/02

CPC classification number: C21D6/007 ,  B22F1/0055 ,  B22F3/101 ,  B22F3/16 ,  B22F3/162 ,  B22F2998/10 ,  B22F2999/00 ,  C21D9/00 ,  C22C33/02 ,  C22C33/04 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F1/059 ,  H01F41/0293 ,  B22F9/08 ,  B22F2009/048 ,  B22F2009/044 ,  B22F3/02 ,  B22F3/10 ,  B22F2201/02 ,  B22F2201/20 ,  B22F2201/05

Abstract: A high-performance NdFeB permanent magnet including a nitride phase and a production method thereof are provided. A main phase of the NdFeB permanent magnet has a structure of R2T14B; a grain boundary phase is distributed around the main phase and contains N, F, Zr, Ga and Cu; a composite phase containing R1, Tb and N exists between the main phase and the grain boundary phase and includes a phase having a structure of (R1, Tb)2T14(B, N). R represents at least two rare earth elements, and includes Pr and Nd; T represents Fe, Mn, Al and Co; R1 represents at least one rare earth element, and includes at least one of Dy and Tb; the main phase contains Pr, Nd, Fe, Mn, Al, Co and B; and the grain boundary phase further contains at least one of Nb and Ti. Through placing partially B by N, a magnetic performance is increased.

公开(公告)号：US20140334962A1

公开(公告)日：2014-11-13

申请号：US14341764

申请日：2014-07-26

Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

Inventor： Baoyu Sun

IPC: H01F41/02 ,  B02C23/12 ,  B02C19/06

CPC classification number: H01F1/0571 ,  B02C19/06 ,  B02C23/12 ,  B22F9/04 ,  B22F2009/041 ,  B22F2009/044 ,  B22F2998/10 ,  B22F2999/00 ,  H01F1/0577 ,  H01F41/0273 ,  B22F3/02 ,  B22F2202/05 ,  B22F1/0055 ,  B22F9/023 ,  B22F3/04 ,  B22F3/1007 ,  B22F2201/20

Abstract: A method of powdering NdFeB rare earth permanent magnetic alloy includes: adding mixed powder after a hydrogen pulverization into a grinder; grinding the powder with a high-speed gas flow ejected by a nozzle; sending the ground powder into a centrifugal sorting wheel with the gas flow; collecting, by a cyclone collector, fine power selected by the sorting wheel; collecting, by a post cyclone collector, the fine powder discharged out with the gas flow from a gas discharging pipe of the cyclone collector; introducing, by a depositing device, the fine powder collected by the cyclone collector and by the post cyclone collector into a depositing tank; compressing, by a compressor, and cooling, by a cooler, the gas discharged by the post cyclone collector; and then sending the gas into a gas inlet of the nozzle for recycling. A device thereof is also provided.

Abstract translation: NdFeB稀土永磁合金粉末的方法包括：将氢粉碎后的混合粉末加入研磨机中; 用喷嘴喷射的高速气流研磨粉末; 将粉末粉末放入带有气流的离心分选轮; 由旋风收集器收集由分选轮选择的精细动力; 通过后旋风收集器收集从旋风收集器的气体放出管排出的细气体， 通过沉积装置将由旋风收集器收集的细粉末和后旋风收集器引入沉积槽; 通过压缩机压缩并由冷却器冷却由后旋风收集器排出的气体; 然后将气体送入喷嘴的气体入口进行再循环。 还提供了其装置。

公开(公告)号：US09863021B2

公开(公告)日：2018-01-09

申请号：US14708997

申请日：2015-05-11

Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

Inventor： Baoyu Sun

IPC: H01F1/057 ,  B22F1/00 ,  C22C38/00 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/10 ,  C22C38/06 ,  C22C1/00 ,  C22C1/02 ,  C22C24/00 ,  C22C33/02 ,  H01F41/02

CPC classification number: C22C38/002 ,  B22F1/0055 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/002 ,  C22C1/02 ,  C22C24/00 ,  C22C33/02 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0273 ,  B22F3/02 ,  B22F2201/02 ,  B22F2202/05 ,  B22F9/08 ,  B22F2009/044 ,  C22C1/1084 ,  B22F3/10

Abstract: A NdFeB rare earth permanent magnet with composite main phase and a manufacturing method thereof are provided. In the composite main phase, a PR2(Fe1-x-yCoxAly)14B main phase is the core, ZR2(Fe1-w-nCowAln)14B main phase surrounds a periphery of the PR2(Fe1-x-yCoxAly)14B main phase, and no grain boundary phase exists between ZR2(Fe1-w-nCowAln)14B main phase and the PR2(Fe1-x-yCoxAly)14B main phase, wherein ZR represents a group of rare earth elements in which a content of heavy rare earth is higher than an average content of heavy rare earth in the composite main phase, PR represents a group of rare earth elements in which a content of heavy rare earth is lower than an average content of heavy rare earth in the composite main phase. The manufacturing method includes steps of LR—Fe—B-Ma alloy melting, HR—Fe—B-Mb alloy melting, alloy hydrogen decrepitating, metal oxide micro-powder surface absorbing and powdering, magnetic field pressing, sintering and ageing.

公开(公告)号：US09643249B2

公开(公告)日：2017-05-09

申请号：US14708497

申请日：2015-05-11

Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

Inventor： Baoyu Sun

IPC: B22F3/00 ,  B22F5/00 ,  H01F41/02 ,  H01F1/053 ,  H01F1/057 ,  B22F9/04 ,  B22F3/24 ,  C22C33/02 ,  F27B9/02

CPC classification number: B22F3/003 ,  B22F3/24 ,  B22F9/04 ,  B22F2003/248 ,  B22F2998/10 ,  C22C33/0278 ,  C22C2202/02 ,  F27B9/028 ,  H01F1/0577 ,  H01F41/0273 ,  B22F3/04 ,  B22F3/1017

Abstract: A method for sintering NdFeB rare earth permanent magnet includes steps of: providing a continuous vacuum sintering furnace to sinter; loading a sintering box with compacted magnet blocks onto a loading frame; while driving by a transmission apparatus, sending the loading frame orderly through a preparation chamber, a pre-heating and degreasing chamber, a first degassing chamber, a second degassing chamber, a pre-sintering chamber, a sintering chamber, an aging chamber and a cooling chamber of the continuous vacuum sintering furnace, respectively for pre-heating to remove organic impurities, and further for heating to dehydrogenate and degas, pre-sintering, sintering, aging and cooling. A continuous vacuum sintering apparatus is also provided.

公开(公告)号：US09620269B2

公开(公告)日：2017-04-11

申请号：US14708460

申请日：2015-05-11

Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

Inventor： Baoyu Sun

IPC: H01F41/02 ,  B22F5/00 ,  H01F1/057 ,  B22F9/02 ,  C21D3/06 ,  C22C38/00 ,  C22C38/10 ,  C22C38/16 ,  C22C38/32

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 dehydrogenating 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.

公开(公告)号：US09543063B2

公开(公告)日：2017-01-10

申请号：US14075801

申请日：2013-11-08

Applicant: SHENYANG GENERAL MAGNETIC CO., LTD

Inventor： Xiaodong Chen ,  Baoyu Sun

IPC: H01F1/053 ,  H01F1/057 ,  H01F1/055

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。

公开(公告)号：US20150248954A1

公开(公告)日：2015-09-03

申请号：US14708997

申请日：2015-05-11

Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

Inventor： Baoyu Sun

IPC: H01F1/057 ,  H01F1/053 ,  H01F41/02 ,  C22C38/00 ,  C22C38/14 ,  C22C38/12 ,  C22C38/10 ,  C22C38/06 ,  H01F1/055 ,  C22C38/16

CPC classification number: C22C38/002 ,  B22F1/0055 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/002 ,  C22C1/02 ,  C22C24/00 ,  C22C33/02 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0273 ,  B22F3/02 ,  B22F2201/02 ,  B22F2202/05 ,  B22F9/08 ,  B22F2009/044 ,  C22C1/1084 ,  B22F3/10

Abstract: A NdFeB rare earth permanent magnet with composite main phase and a manufacturing method thereof are provided. In the composite main phase, a PR2(Fe1-x-yCoxAly)14B main phase is the core, ZR2(Fe1-w-nCowAln)14B main phase surrounds a periphery of the PR2(Fe1-x-yCoxAly)14B main phase, and no grain boundary phase exists between ZR2(Fe1-w-nCowAln)14B main phase and the PR2(Fe1-x-yCoxAly)14B main phase, wherein ZR represents a group of rare earth elements in which a content of heavy rare earth is higher than an average content of heavy rare earth in the composite main phase, PR represents a group of rare earth elements in which a content of heavy rare earth is lower than an average content of heavy rare earth in the composite main phase. The manufacturing method includes steps of LR—Fe—B-Ma alloy melting, HR—Fe—B-Mb alloy melting, alloy hydrogen decrepitating, metal oxide micro-powder surface absorbing and powdering, magnetic field pressing, sintering and ageing.

Abstract translation: 提供了具有复合主相的NdFeB稀土永磁体及其制造方法。 在复合主相中，PR2（Fe1-x-yCoxAly）14B主相为核，ZR2（Fe1-w-nCowAln）14B主相围绕PR2（Fe1-x-yCoxAly）14B主相的周围， 在ZR2（Fe1-w-nCowAln）14B主相和PR2（Fe1-x-yCoxAly）14B主相之间不存在晶界相，其中ZR表示重稀土含量的一组稀土元素 高于复合主相中重稀土的平均含量，PR表示复合主相中重稀土含量低于重稀土元素含量的一组稀土元素。 制造方法包括LR-Fe-B-Ma合金熔融，HR-Fe-B-Mb合金熔解，合金氢化裂解，金属氧化物微粉末表面吸收和粉化，磁场压制，烧结和老化的步骤。

公开(公告)号：US09920406B2

公开(公告)日：2018-03-20

申请号：US14709046

申请日：2015-05-11

Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

Inventor： Baoyu Sun

IPC: H01F1/057 ,  C22C38/00 ,  H01F41/02 ,  C22C38/16 ,  C22C38/14 ,  C22C38/10 ,  C22C38/06 ,  C22C1/00 ,  C22C38/32 ,  B22F1/00 ,  B22F9/02

CPC classification number: C22C38/002 ,  B22F1/004 ,  B22F9/023 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/002 ,  C22C1/005 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C38/32 ,  H01F1/0577 ,  H01F41/0273 ,  B22F1/0003 ,  B22F1/0059 ,  B22F9/08 ,  B22F9/04 ,  B22F2009/044 ,  B22F3/02 ,  B22F3/1021 ,  B22F3/1028 ,  B22F2003/247

Abstract: A method for manufacturing a high-performance NdFeB rare earth permanent magnetic device which is made of an R—Fe—Co—B-M strip casting alloy, a micro-crystal HR—Fe alloy fiber, and TmGn compound micro-powder, includes steps of: manufacturing the R—Fe—Co—B-M strip casting alloy, manufacturing the micro-crystal HR—Fe alloy fiber, providing hydrogen decrepitating, pre-mixing, powdering with jet milling, post-mixing, providing magnetic field pressing, sintering and ageing, wherein after a sintered NdFeB permanent magnet is manufactured, machining and surface-treating the sintered NdFeB permanent magnet for forming a rare earth permanent device.

公开(公告)号：US20150243416A1

公开(公告)日：2015-08-27

申请号：US14709046

申请日：2015-05-11

Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

Inventor： Baoyu Sun

IPC: H01F1/057 ,  H01F1/055 ,  C22C38/00 ,  C22C38/14 ,  C22C38/10 ,  C22C38/06 ,  H01F41/02 ,  C22C38/16

CPC classification number: C22C38/002 ,  B22F1/004 ,  B22F9/023 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/002 ,  C22C1/005 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C38/32 ,  H01F1/0577 ,  H01F41/0273 ,  B22F1/0003 ,  B22F1/0059 ,  B22F9/08 ,  B22F9/04 ,  B22F2009/044 ,  B22F3/02 ,  B22F3/1021 ,  B22F3/1028 ,  B22F2003/247

Abstract: A method for manufacturing a high-performance NdFeB rare earth permanent magnetic device which is made of an R—Fe—Co—B-M strip casting alloy, a micro-crystal HR—Fe alloy fiber, and TmGn compound micro-powder, includes steps of: manufacturing the R—Fe—Co—B-M strip casting alloy, manufacturing the micro-crystal HR—Fe alloy fiber, providing hydrogen decrepitating, pre-mixing, powdering with jet milling, post-mixing, providing magnetic field pressing, sintering and ageing, wherein after a sintered NdFeB permanent magnet is manufactured, machining and surface-treating the sintered NdFeB permanent magnet for forming a rare earth permanent device.

Abstract translation: 由R-Fe-Co-BM带状铸造合金，微晶HR-Fe合金纤维和TmGn复合微粉末制成的高性能NdFeB稀土永久磁铁装置的制造方法包括以下步骤： ：制造R-Fe-Co-BM带钢铸造合金，制造微晶HR-Fe合金纤维，提供氢气破裂，预混合，喷射粉碎，后混合，提供磁场压制，烧结和老化 其特征在于，在制造烧结NdFeB永磁体之后，对用于形成稀土永久元件的NdFeB烧结烧结永磁体进行机械加工和表面处理。