公开(公告)号：US10056188B2

公开(公告)日：2018-08-21

申请号：US13980944

申请日：2012-01-26

Applicant: Mitsuaki Mochizuki ,  Shoji Nakayama ,  Kazuhiro Sonoda

Inventor： Mitsuaki Mochizuki ,  Shoji Nakayama ,  Kazuhiro Sonoda

IPC: B22F3/12 ,  B22F3/16 ,  H01F1/057 ,  H01F41/02 ,  C22C38/00 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  C22C1/02 ,  B22F9/04

CPC classification number: H01F41/0246 ,  B22F2009/044 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/02 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  H01F1/0571 ,  H01F1/0573 ,  H01F1/0577 ,  H01F41/0266 ,  H01F41/0273 ,  B22F9/023 ,  B22F2009/042 ,  B22F2201/20 ,  B22F2201/10

Abstract: The present invention provides a producing method of R-T-B-based sintered magnets in which, the recovery chamber 40 includes inert gas introducing means 42, evacuating means 43, a carry-in port, a discharge port 40a, and a recovery container 60. The recovery step includes a carrying-in step of conveying a processing container 50 into the recovery chamber 40, a discharging step of discharging coarsely pulverized powder in the processing container 50 into the recovery chamber 40, a gas introducing step of introducing inert gas into the recovery chamber 40, and an alloy accommodating step of recovering the coarsely pulverized powder into the recovery container 60. Addition of pulverization aid is carried out in the alloy accommodating step. A remaining amount of coarsely pulverized powder in the recovery chamber 40, an oxygen-containing amount of the R-T-B-based sintered magnet is reduced, and magnetic properties are enhanced.

公开(公告)号：US09643253B2

公开(公告)日：2017-05-09

申请号：US14607016

申请日：2015-01-27

Applicant: HITACHI METALS, LTD.

Inventor： Shoji Nakayama ,  Kazuhiro Sonoda ,  Jyunichi Sanai

IPC: B22F9/04 ,  C21D1/74 ,  B22F9/16 ,  B22F8/00 ,  C22B7/00 ,  C22B59/00 ,  C22C28/00 ,  H01F1/053 ,  H01F41/00 ,  H01F1/055 ,  H01F1/057

CPC classification number: B22F9/16 ,  B22F8/00 ,  B22F2999/00 ,  C22B7/001 ,  C22B59/00 ,  C22C28/00 ,  C22C2202/02 ,  H01F1/053 ,  H01F1/0553 ,  H01F1/0573 ,  H01F41/00 ,  Y02P10/214 ,  Y02P10/24 ,  Y02W30/541 ,  B22F9/023

Abstract: A method and a device for recovering hydrogen pulverized powder of a raw-material alloy for rare-earth magnets capable of lowering the possibility that hydrogen pulverized powder remains in a recovery chamber; therefore, enhancing magnetic properties by reducing an oxygen content of an obtained rare-earth magnet. A processing container 50 is carried into a recovery chamber 40 from a processing chamber after inert gas is introduced into the recovery chamber 40. The raw-material alloy for rare-earth magnets in the processing container 50 is discharged into the recovery chamber 40 after the pressure in the recovery chamber 40 is reduced Thereafter, inert gas is introduced into the recovery chamber 40, and the raw-material alloy for rare-earth magnets is recovered into the recovery container 50 after a pressure in the recovery chamber 40 is set to a predetermined pressure by inert gas.

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：US20150302960A1

公开(公告)日：2015-10-22

申请号：US14441944

申请日：2013-11-08

Applicant: XIAMEN TUNGSTEN CO., LTD.

Inventor： Hiroshi NAGATA ,  Chonghu WU

IPC: H01F1/057 ,  C21D6/00 ,  C22C1/06 ,  C22C38/00 ,  C22C38/16 ,  C22C38/14 ,  C22C38/06 ,  C22C33/00 ,  B22F9/04 ,  B22F3/12 ,  B22F3/04 ,  H01F1/08 ,  H01F1/053 ,  H01F1/055 ,  H01F41/02 ,  C21D3/06

CPC classification number: H01F1/0573 ,  B22F3/04 ,  B22F3/12 ,  B22F9/04 ,  B22F2999/00 ,  C21D3/06 ,  C21D6/007 ,  C22C1/06 ,  C22C33/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/007 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0536 ,  H01F1/0557 ,  H01F1/0577 ,  H01F1/086 ,  H01F41/0266 ,  B22F2009/045 ,  B22F2201/013

Abstract: The present invention discloses manufacturing methods of a powder for compacting rare earth magnet and rare earth magnet that omit jet milling process, which comprise the steps as follows: 1) casting: casting the molten alloy of rare earth magnet raw material by strip casting method to obtain a quenched alloy with average thickness in a range of 0.2˜0.4 mm; 2) hydrogen decrepitation: decrepitating the quenched alloy hydrogen under a hydrogen pressure between 0.01˜1 MPa for 0.5˜24 h to obtain the powder. The present invention improves the manufacturing processes which are before the process of jet milling for omitting the process of jet milling, thus simplifying the process; which may also acquire a low cost production by efficiently using the precious rare earth resource.

Abstract translation: 本发明公开了一种用于压实稀土磁体和稀土磁体的粉末的制造方法，该方法包括以下步骤：1）铸造：通过带式铸造法将稀土磁体原料的熔​​融合金铸造成 获得平均厚度在0.2〜0.4mm范围内的淬火合金; 2）氢气爆裂：在0.01〜1MPa的氢气压力下将淬火的合金氢气破裂0.5〜24h，得到粉末。 本发明改进了在喷射研磨过程之前的制造过程，以省略喷射铣削的过程，从而简化了工艺过程; 也可以通过有效利用稀土资源获得低成本生产。

公开(公告)号：US20150294786A1

公开(公告)日：2015-10-15

申请号：US14751442

申请日：2015-06-26

Applicant: Miha Zakotnik ,  Peter Afiuny ,  Scott Dunn ,  Catalina Oana Tudor

Inventor： Miha Zakotnik ,  Peter Afiuny ,  Scott Dunn ,  Catalina Oana Tudor

IPC: H01F41/02 ,  H01F1/053 ,  C22C38/00 ,  B22F3/10 ,  B22F3/24 ,  B22F9/04 ,  H01F1/08 ,  H01F1/057

CPC classification number: H01F41/0253 ,  B01J10/005 ,  B22F1/0003 ,  B22F1/0088 ,  B22F3/10 ,  B22F3/24 ,  B22F8/00 ,  B22F9/04 ,  B22F2009/041 ,  B22F2998/10 ,  B23P19/04 ,  B23P23/04 ,  B23Q7/02 ,  B23Q7/12 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/14 ,  H01F1/0536 ,  H01F1/057 ,  H01F1/0573 ,  H01F1/0577 ,  H01F1/086 ,  H01F13/006 ,  H01F41/00 ,  H01F41/0266 ,  Y02P10/24 ,  Y02W30/541 ,  Y10T29/49755 ,  Y10T29/49757 ,  Y10T29/49821 ,  Y10T29/53274 ,  Y10T29/53404 ,  Y10T83/202 ,  B22F1/0085

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for recycling magnetic material to restore or improve the magnetic performance One of the methods includes fragmenting magnetic material to form a powder, mixing the powder with a) a rare earth material R and b) an elemental additive A to produce a homogeneous powder, wherein the rare earth material comprises at least one of: i) Nd, ii) Pr, and iii) Dy, and the elemental additive A comprises at least one of: i) Co, ii) Cu, and iii) Fe, and sintering and magnetizing the homogenous powder to form a Nd—Fe—B magnetic product.

Abstract translation: 方法，系统和装置，包括在计算机存储介质上编码的计算机程序，用于再循环磁性材料以恢复或改善磁性能其中一种方法包括使磁性材料碎裂形成粉末，将粉末与a）稀土材料混合 R和b）元素添加剂A以产生均匀的粉末，其中所述稀土材料包括以下中的至少一种：i）Nd，ii）Pr和iii）Dy，并且所述元素添加剂A包括以下中的至少一种：i ）Co，ii）Cu和iii）Fe，并烧结并磁化均匀粉末以形成Nd-Fe-B磁性产品。

公开(公告)号：US09095940B2

公开(公告)日：2015-08-04

申请号：US14543296

申请日：2014-11-17

Applicant: Miha Zakotnik ,  Peter Afiuny ,  Scott Dunn ,  Catalina Oana Tudor

Inventor： Miha Zakotnik ,  Peter Afiuny ,  Scott Dunn ,  Catalina Oana Tudor

IPC: B23P19/04 ,  H01F1/08 ,  H01F41/00 ,  B01J10/00 ,  B22F1/00 ,  B22F9/04 ,  H01F1/057 ,  H01F41/02 ,  B23P23/04 ,  B23Q7/02 ,  B23Q7/12 ,  H01F13/00

CPC classification number: H01F41/0253 ,  B01J10/005 ,  B22F1/0003 ,  B22F1/0088 ,  B22F3/10 ,  B22F3/24 ,  B22F8/00 ,  B22F9/04 ,  B22F2009/041 ,  B22F2998/10 ,  B23P19/04 ,  B23P23/04 ,  B23Q7/02 ,  B23Q7/12 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/14 ,  H01F1/0536 ,  H01F1/057 ,  H01F1/0573 ,  H01F1/0577 ,  H01F1/086 ,  H01F13/006 ,  H01F41/00 ,  H01F41/0266 ,  Y02P10/24 ,  Y02W30/541 ,  Y10T29/49755 ,  Y10T29/49757 ,  Y10T29/49821 ,  Y10T29/53274 ,  Y10T29/53404 ,  Y10T83/202 ,  B22F1/0085

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for recycling magnetic material. One of the systems includes a system for harvesting a waste magnet from an end-of-life product, the system comprising a positioning mechanism that defines a recess to receive and locate the end-of-life product relative to the positioning mechanism, the end-of-life product including the waste magnet, a separating station to substantially separate a portion of the end-of-life product containing the waste magnet from the remainder of the end-of-life product when the positioning mechanism moves the respective end-of-life product through the separating station, and a transport station that receives the portion of the end-of-life product containing the waste magnet from the positioning mechanism when the positioning mechanism moves the respective end-of-life product to the transport station.

Abstract translation: 方法，系统和装置，包括在计算机存储介质上编码的用于再循环磁性材料的计算机程序。 其中一个系统包括一个用于从废品产品中收集废弃磁体的系统，该系统包括一个定位机构，该定位机构限定了一个凹槽，用于相对于定位机构接收和定位报废产品， 包括废磁体的分离工位，当定位机构移动相应的末端产品时，分离站基本上将包含废弃磁体的剩余部分废物磁体的一部分基本上分离出来， 以及运送站，当所述定位机构将相应的报废产品移动到所述运送站时，所述运送站从所述定位机构接收包含所述废弃磁体的所述结束生命部分产品的所述部分 。

公开(公告)号：US20150068030A1

公开(公告)日：2015-03-12

申请号：US14543296

申请日：2014-11-17

Applicant: Miha Zakotnik ,  Peter Afiuny ,  Scott Dunn ,  Catalina Oana Tudor

Inventor： Miha Zakotnik ,  Peter Afiuny ,  Scott Dunn ,  Catalina Oana Tudor

IPC: B23P19/04 ,  H01F41/00 ,  H01F1/08

CPC classification number: H01F41/0253 ,  B01J10/005 ,  B22F1/0003 ,  B22F1/0088 ,  B22F3/10 ,  B22F3/24 ,  B22F8/00 ,  B22F9/04 ,  B22F2009/041 ,  B22F2998/10 ,  B23P19/04 ,  B23P23/04 ,  B23Q7/02 ,  B23Q7/12 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/14 ,  H01F1/0536 ,  H01F1/057 ,  H01F1/0573 ,  H01F1/0577 ,  H01F1/086 ,  H01F13/006 ,  H01F41/00 ,  H01F41/0266 ,  Y02P10/24 ,  Y02W30/541 ,  Y10T29/49755 ,  Y10T29/49757 ,  Y10T29/49821 ,  Y10T29/53274 ,  Y10T29/53404 ,  Y10T83/202 ,  B22F1/0085

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for recycling magnetic material. One of the systems includes a system for harvesting a waste magnet from an end-of-life product, the system comprising a positioning mechanism that defines a recess to receive and locate the end-of-life product relative to the positioning mechanism, the end-of-life product including the waste magnet, a separating station to substantially separate a portion of the end-of-life product containing the waste magnet from the remainder of the end-of-life product when the positioning mechanism moves the respective end-of-life product through the separating station, and a transport station that receives the portion of the end-of-life product containing the waste magnet from the positioning mechanism when the positioning mechanism moves the respective end-of-life product to the transport station.

Abstract translation: 方法，系统和装置，包括在计算机存储介质上编码的用于再循环磁性材料的计算机程序。 其中一个系统包括一个用于从废品产品中收集废弃磁体的系统，该系统包括一个定位机构，该定位机构限定了一个凹槽，用于相对于定位机构接收和定位报废产品， 包括废磁体的分离工位，当定位机构移动相应的末端产品时，分离站基本上将包含废弃磁体的剩余部分废物磁体的一部分基本上分离出来， 以及运送站，当所述定位机构将相应的报废产品移动到所述运送站时，所述运送站从所述定位机构接收包含所述废弃磁体的所述结束生命部分产品的所述部分 。

公开(公告)号：US08907755B2

公开(公告)日：2014-12-09

申请号：US13835754

申请日：2013-03-15

Applicant: Toda Kogyo Corp.

Inventor： Nobuhiro Katayama ,  Hirofumi Kawasaki ,  Koichiro Morimoto

IPC: H01F7/02 ,  H01F1/00 ,  H01F1/057 ,  H01F1/01 ,  H01F41/00

CPC classification number: H01F7/02 ,  B22F1/0085 ,  B22F2999/00 ,  C22C33/02 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C2202/02 ,  H01F1/01 ,  H01F1/0573 ,  H01F1/0578 ,  H01F41/005 ,  B22F2201/013 ,  B22F2203/11

Abstract: R-T-B-based rare earth magnet particles are produced by an HDDR treatment which comprises a first stage HD step of heating particles of a raw material alloy having a composition of R, B and Co in an inert atmosphere or in a vacuum atmosphere and then replacing the atmosphere with a hydrogen-containing gas atmosphere in which the raw material alloy particles are held in the same temperature range and a second stage HD step of heating a material obtained in the first stage HD step in which the material is held in the hydrogen-containing gas atmosphere.

Abstract translation: 通过HDDR处理生产RTB型稀土磁体颗粒，其包括在惰性气氛或真空气氛中加热具有R，B和Co组成的原料合金的颗粒的第一阶段HD步骤，然后将 含有原料合金颗粒保持在相同温度范围的含氢气体气氛的气氛，以及第二阶段HD步骤，将在第一阶段HD步骤中获得的材料加热，其中所述材料保持在含氢气体 气体气氛。

公开(公告)号：US20140294655A1

公开(公告)日：2014-10-02

申请号：US14180827

申请日：2014-02-14

Applicant: Jingfeng Wu ,  Jingshan Wu

Inventor： Jingfeng Wu ,  Jingshan Wu

IPC: H01F41/02 ,  F27D7/06

CPC classification number: F27D7/06 ,  C22C33/0207 ,  H01F1/0573 ,  H01F1/0577

Abstract: The present invention is directed to a method for preparing a permanent magnet, and more specifically, to a method for preparing a high-performance sintered Nd—Fe—B permanent magnet, in order to solve the problems of increased brittleness or high cost present in the permanent magnet prepared by the existing process. A method for preparing a sintered Nd—Fe—B permanent magnet includes the following steps: (1) ingredient calculation and raw material preparation in which calculating ingredients and preparing raw materials according to the ingredient formula of the resultantly sintered Nd—Fe—B permanent magnet in mass fraction, i.e., (NdA−XREX)A(Febal−yMy)balB0.95˜1.03, in which A %+(0.95˜4.03)%+bal %=100%; then dividing the raw materials into a rare earth Fe—B compound and rare earth metals, the formula of the rare earth Fe—B compound in mass fraction being (Nd28−aREa)28(Febal−yMy)balB0.95˜1.03 and that of the rare earth metals being (NdA−28−bREb)A−28.

Abstract translation: 本发明涉及一种制备永磁体的方法，更具体地说，涉及制备高性能烧结Nd-Fe-B永磁体的方法，以解决脆性增加或成本高的问题 永磁体由现有工艺制备而成。 烧结Nd-Fe-B永磁体的制备方法包括以下步骤：（1）成分计算和原料制备，其中根据Nd-Fe-B结合烧结永久物的成分公式计算成分和制备原料 磁体质量分数，即（NdA-XREX）A（Febal-yMy）balB0.95〜1.03，其中A％+（0.95〜4.03）％+ bal％= 100％ 然后将原料分为稀土Fe-B化合物和稀土金属，质量分数为（Nd28-aREa）28（Febal-yMy）balB0.95〜1.03的稀土Fe-B化合物的配方， 的稀土金属为（NdA-28-bREb）A-28。