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1.发明授权公开(公告)号：US10563276B2
公开(公告)日：2020-02-18
申请号：US15382672
申请日：2016-12-18
发明人： Baoyu Sun , Yongli Duan
IPC分类号： B22F3/12 , H01F1/057 , H01F41/02 , C21D6/00 , C22C38/16 , C22C38/14 , C22C38/10 , C22C38/06 , C22C38/00 , C22C33/04 , B22F3/16 , C21D9/00 , H01F1/059 , B22F3/10 , C22C33/02 , B22F1/00
摘要： 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.
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2.发明授权公开(公告)号：US10468167B2
公开(公告)日：2019-11-05
申请号：US15401262
申请日：2017-01-09
发明人： Baoyu Sun , Yongli Duan
摘要： 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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公开(公告)号：US20170103837A1
公开(公告)日：2017-04-13
申请号：US15389568
申请日：2016-12-23
发明人： Baoyu Sun , Yongli Duan
IPC分类号： H01F1/057 , C22C38/14 , C22C38/10 , C22C38/06 , C22C38/00 , C22C33/04 , C22C33/02 , B22F9/10 , B22F9/02 , B22F3/087 , B22F3/10 , B22F3/16 , B22F3/24 , B22F5/00 , C21D8/12 , C21D9/00 , H01F41/02 , C22C38/16
CPC分类号： H01F1/0577 , B22F3/1017 , B22F2998/10 , B22F2999/00 , C21D8/1216 , C21D8/1244 , C21D9/0068 , C22C33/04 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , C22C2202/02 , H01F41/0273 , B22F2009/048 , B22F1/0055 , B22F9/023 , B22F2009/047 , B22F3/087 , B22F3/162 , B22F2003/248 , B22F2009/044 , B22F2201/02 , B22F3/1007 , B22F2201/20
摘要： 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.
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4.发明申请公开(公告)号：US20150243434A1
公开(公告)日：2015-08-27
申请号：US14708497
申请日：2015-05-11
发明人： Baoyu Sun
IPC分类号： H01F41/02 , H01F1/053 , H01F1/057 , B22F9/04 , B22F3/24 , B22F3/00 , B22F5/00 , H01F1/08 , B22F3/12
CPC分类号： B22F3/003 , B22F3/24 , B22F9/04 , B22F2003/248 , B22F2998/10 , C22C33/0278 , C22C2202/02 , F27B9/028 , H01F1/0577 , H01F41/0273 , B22F3/04 , B22F3/1017
摘要： 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.
摘要翻译： 一种烧结NdFeB稀土永磁体的方法包括以下步骤：提供连续的真空烧结炉进行烧结; 将具有压实磁体块的烧结盒装载到装载框架上; 在通过传动装置驱动的同时，通过准备室，预热和脱脂室，第一脱气室，第二脱气室，预烧结室，烧结室，老化室和 连续真空烧结炉的冷却室，分别预热除去有机杂质，进一步加热脱氢脱气，预烧结，烧结，老化和冷却。 还提供连续的真空烧结装置。
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5.发明申请公开(公告)号：US20150243415A1
公开(公告)日：2015-08-27
申请号：US14709021
申请日：2015-05-11
发明人： Baoyu Sun
IPC分类号： H01F1/057 , H01F1/055 , C22C38/16 , C22C38/10 , C22C38/12 , C22C38/06 , C22C38/00 , H01F41/02 , C22C38/14
CPC分类号： C22C38/005 , B22F2009/044 , B22F2998/10 , B22F2999/00 , C22C33/04 , C22C33/06 , C22C38/002 , C22C38/06 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , H01F1/0577 , H01F41/0266 , H01F41/0293 , B22F3/02 , B22F3/1007 , B22F2202/05 , B22F2201/02 , B22F2201/20 , B22F2201/11
摘要： A method for manufacturing a NdFeB rare earth permanent magnet containing Ce whose raw material includes a Ce-LR-Fe—B-Ma alloy, a Ce-HR-Fe—B-Mb alloy, and metallic oxide micro-powder; wherein the LR at least includes Nd and Pr, and the LR does not include Ce; wherein the HR at least includes Dy or Tb, and the HR does not include Ce; wherein the Ma is selected from a group consisting of Al, Co, Nb, Ga, Zr and Cu; wherein the Mb is selected from a group consisting of Al, Co, Nb, Ga, Zr, Cu and Mo; includes steps of: melting the Ce-LR-Fe—B-Ma alloy, melting the Ce-HR-Fe—B-Mb alloy, providing hydrogen decrepitating, adsorbing with the metallic oxide micro-powder and powdering, providing magnetic field pressing, sintering and ageing, for forming a NdFeB rare earth permanent magnet.
摘要翻译： 含有Ce-LR-Fe-B-Ma合金，Ce-HR-Fe-B-Mb合金和金属氧化物微粉末的Ce的NdFeB稀土永磁体的制造方法， 其中LR至少包括Nd和Pr，LR不包括Ce; 其中所述HR至少包括Dy或Tb，并且所述HR不包括Ce; 其中所述Ma选自Al，Co，Nb，Ga，Zr和Cu; 其中Mb选自Al，Co，Nb，Ga，Zr，Cu和Mo; 包括以下步骤：熔化Ce-LR-Fe-B-Ma合金，熔化Ce-HR-Fe-B-Mb合金，提供氢气破裂，用金属氧化物微粉末吸附和粉化，提供磁场压制， 烧结和老化，用于形成NdFeB稀土永磁体。
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6.发明申请公开(公告)号：US20170117073A1
公开(公告)日：2017-04-27
申请号：US15401262
申请日：2017-01-09
发明人： Baoyu Sun , Yongli Duan
CPC分类号： H01F1/0577 , H01F41/0273
摘要： 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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7.发明申请公开(公告)号：US20170098496A1
公开(公告)日：2017-04-06
申请号：US15382672
申请日：2016-12-18
发明人： Baoyu Sun , Yongli Duan
IPC分类号： 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分类号： 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
摘要： 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.
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8.发明申请公开(公告)号：US20140334962A1
公开(公告)日：2014-11-13
申请号：US14341764
申请日：2014-07-26
发明人： Baoyu Sun
CPC分类号： 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
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US09920406B2
公开(公告)日：2018-03-20
申请号：US14709046
申请日：2015-05-11
发明人： Baoyu Sun
IPC分类号： H01F1/057 , C22C38/00 , H01F41/02 , C22C38/16 , C22C38/14 , C22C38/10 , C22C38/06 , C22C1/00 , C22C38/32 , B22F1/00 , B22F9/02
CPC分类号： 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
摘要： 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.
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10.发明申请Method for manufacturing high-performance NdFeB rare earth permanent magnetic device 审中-公开制造高性能钕铁硼稀土永磁设备的方法公开(公告)号：US20150243416A1
公开(公告)日：2015-08-27
申请号：US14709046
申请日：2015-05-11
发明人： Baoyu Sun
IPC分类号： H01F1/057 , H01F1/055 , C22C38/00 , C22C38/14 , C22C38/10 , C22C38/06 , H01F41/02 , C22C38/16
CPC分类号： 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
摘要： 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.
摘要翻译： 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。
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