公开(公告)号：US10079085B2

公开(公告)日：2018-09-18

申请号：US14651560

申请日：2013-05-31

Applicant: Hongwei Li ,  Yang Luo ,  Dunbo Yu ,  Kuoshe Li ,  Wenlong Yan ,  Shipeng Li ,  Yongqiang Yuan ,  Haijun Peng

Inventor： Hongwei Li ,  Yang Luo ,  Dunbo Yu ,  Kuoshe Li ,  Wenlong Yan ,  Shipeng Li ,  Yongqiang Yuan ,  Haijun Peng

IPC: B22F1/00 ,  B22F9/00 ,  H01F1/059 ,  C22C38/00 ,  H01F1/08 ,  H01F1/22 ,  H01F41/02 ,  C21D6/00 ,  C21D1/18 ,  C22C38/10 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/02 ,  B22F9/08 ,  C23C8/22 ,  C23C8/26 ,  H01F1/055 ,  C22C38/04

CPC classification number: H01F1/059 ,  B22F1/00 ,  B22F9/082 ,  B22F2998/10 ,  B22F2999/00 ,  C21D1/18 ,  C21D6/00 ,  C22C33/02 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C2202/02 ,  C23C8/22 ,  C23C8/26 ,  H01F1/0551 ,  H01F1/0558 ,  H01F1/083 ,  H01F1/22 ,  H01F41/0266 ,  B22F2009/048 ,  B22F1/0088 ,  B22F2201/30 ,  B22F2201/02

Abstract: A rare-earth permanent magnetic powder, a bonded magnet containing thereof and a device using the bonded magnet are provided of the present disclosure. The rare-earth permanent magnetic powder comprises: 70 vol % to 99 vol % of a hard magnetic phase and 1 vol % to 30 vol % of a soft magnetic phase, the hard magnetic phase has a TbCu7 structure, and the grain size of the hard magnetic phase is 5 nm to 100 nm; the soft magnetic phase is a Fe phase having a bcc structure, the average grain size of the soft magnetic phase is 1 nm to 30 nm, and the standard deviation of the grain size is below 0.5σ.

公开(公告)号：US09938625B2

公开(公告)日：2018-04-10

申请号：US14662235

申请日：2015-03-18

Applicant: SHENYANG GENERAL MAGNETIC CO., LTD.

Inventor： Baoyu Sun ,  Xiaodong Chen

IPC: C23C28/00 ,  C23C28/02 ,  C23C14/35 ,  B22F3/12 ,  B22F3/04 ,  B22F7/08 ,  B22F7/00 ,  B22F9/08 ,  C23C14/08 ,  C23C14/02 ,  C23C14/16 ,  C23C14/22 ,  B22F3/24 ,  H01F41/02

CPC classification number: C23C28/3455 ,  B22F3/04 ,  B22F3/12 ,  B22F3/24 ,  B22F7/008 ,  B22F7/08 ,  B22F9/08 ,  B22F2003/242 ,  B22F2998/10 ,  B22F2999/00 ,  C22C2202/02 ,  C23C14/022 ,  C23C14/028 ,  C23C14/081 ,  C23C14/083 ,  C23C14/086 ,  C23C14/165 ,  C23C14/223 ,  C23C28/021 ,  C23C28/321 ,  C23C28/324 ,  C23C28/345 ,  H01F41/026 ,  B22F9/023 ,  B22F2009/044 ,  B22F1/0003 ,  B22F3/02 ,  B22F3/10 ,  B22F2003/248 ,  B22F3/16 ,  B22F2202/05 ,  B22F2201/02

Abstract: A method for manufacturing a NdFeB rare earth permanent magnetic device with composite plating includes steps of: firstly melting alloy, casting the alloy in a melted state onto a rotation copper roller with a water cooling function, so as to be cooled for forming alloy flakes; hydrogen decrepitating; mixing after hydrogen decrepitating; jet milling after mixing; mixing under nitrogen protection before molding in a nitrogen protection magnetic field pressing machine, and then packing in a protection tank before being moved out of the protection tank and isostatic pressing; sintering in a sintering device and aging for forming a NdFeB rare earth permanent magnet; machining for forming a NdFeB rare earth permanent magnetic device; and plating the NdFeB rare earth permanent magnetic device, wherein three layers of plated films are formed.

公开(公告)号：US09881721B2

公开(公告)日：2018-01-30

申请号：US14712227

申请日：2015-05-14

Applicant: TDK CORPORATION

Inventor： Yu Sakurai ,  Tomofumi Kuroda ,  Hideyuki Itoh

IPC: H01F1/20 ,  H01F1/147 ,  C22C38/00 ,  B22F1/02 ,  H01F1/24 ,  H01F41/02

CPC classification number: H01F1/20 ,  B22F1/02 ,  B22F2998/10 ,  B22F2999/00 ,  C22C38/002 ,  H01F1/147 ,  H01F1/24 ,  H01F41/0246 ,  B22F9/08 ,  B22F1/0085 ,  B22F1/0081 ,  B22F1/0088 ,  B22F3/02 ,  B22F2003/248 ,  B22F2201/02 ,  B22F2009/043 ,  B22F2009/042

Abstract: The present invention relates to a soft magnetic metal powder having iron as the main component and containing boron, wherein, the content of iron inside the soft magnetic metal powder is 98 mass % or more, the content of boron in the particle of the soft magnetic metal powder is 10 to 150 ppm, and the metal particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.

公开(公告)号：US20170341141A1

公开(公告)日：2017-11-30

申请号：US15495250

申请日：2017-04-24

Applicant: Arcam AB

Inventor： Ulf Ackelid

IPC: B22F3/10 ,  B33Y10/00 ,  C22C14/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B33Y70/00 ,  B23K26/12 ,  B23K26/00 ,  B23K15/02 ,  B23K15/00 ,  B22F3/24 ,  B22F3/15 ,  B22F3/105 ,  B22F1/00 ,  B23K26/70 ,  B23K26/342 ,  C23C8/08 ,  B23K103/14

CPC classification number: B22F3/1055 ,  B22F3/1039 ,  B22F3/15 ,  B22F3/24 ,  B22F2003/1056 ,  B22F2003/241 ,  B22F2998/10 ,  B22F2999/00 ,  B23K15/0026 ,  B23K15/0086 ,  B23K15/0093 ,  B23K15/02 ,  B23K15/10 ,  B23K26/0006 ,  B23K26/126 ,  B23K26/127 ,  B23K26/342 ,  B23K26/702 ,  B23K2103/04 ,  B23K2103/08 ,  B23K2103/14 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y70/00 ,  C22C1/0458 ,  C22C14/00 ,  C23C8/08 ,  Y02P10/295 ,  B22F2201/013 ,  B22F2201/10 ,  B22F2201/016 ,  B22F2201/02 ,  B22F2201/30

Abstract: A method for forming a three-dimensional article through successive fusion of parts of a metal powder bed is provided, comprising the steps of: distributing a first metal powder layer on a work table inside a build chamber, directing at least one high energy beam from at least one high energy beam source over the work table causing the first metal powder layer to fuse in selected locations, distributing a second metal powder layer on the work table, directing at least one high energy beam over the work table causing the second metal powder layer to fuse in selected locations, introducing a first supplementary gas into the build chamber, which first supplementary gas comprising hydrogen, is capable of reacting chemically with or being absorbed by a finished three-dimensional article, and releasing a predefined concentration of the gas which had reacted chemically with or being absorbed by the finished three dimensional article.

公开(公告)号：US20170304901A1

公开(公告)日：2017-10-26

申请号：US15256344

申请日：2016-09-02

Applicant: HRL LABORATORIES, LLC

Inventor： Randall C. Schubert ,  Tobias A. Schaedler ,  John H. Martin

IPC: B22F9/14 ,  B23H1/02 ,  B23H1/10 ,  B82Y40/00 ,  B23H9/00

CPC classification number: B22F9/14 ,  B22F1/0018 ,  B22F1/0022 ,  B22F2201/02 ,  B22F2201/03 ,  B22F2201/11 ,  B22F2998/10 ,  B22F2999/00 ,  B82Y40/00

Abstract: A wire explosion assembly configured to form nanoparticles by exploding at least a segment of an electrically conductive wire. The wire explosion assembly includes a spool supporting the electrically conductive wire, a vessel defining a wire explosion chamber, means in the wire explosion chamber for pulling the electrically conductive wire off of the spool and applying tension on the segment of the electrically conductive wire, and a power source for delivering an electrical current to the segment of the electrically conductive wire. The electrical current is configured to explode the segment of the electrically conductive wire into the nanoparticles.

公开(公告)号：US20170213627A1

公开(公告)日：2017-07-27

申请号：US15401349

申请日：2017-01-09

Applicant: Yantai Shougang Magnetic Materials, Inc.

Inventor： Kaihong Ding ,  Zhongjie Peng ,  Guohai Wang ,  Xiulei Chen

IPC: H01F1/057 ,  C22C38/10 ,  C22C38/06 ,  C22C38/00 ,  C21D9/00 ,  C21D6/00 ,  B22D11/00 ,  B22F9/04 ,  B22F3/16 ,  B22F3/24 ,  B22F1/00 ,  H01F41/02 ,  H01F1/058 ,  H01F1/059 ,  C22C38/16

CPC classification number: H01F1/0577 ,  B22D11/001 ,  B22F1/0059 ,  B22F3/16 ,  B22F3/24 ,  B22F9/04 ,  B22F2003/248 ,  B22F2009/044 ,  B22F2201/013 ,  B22F2201/02 ,  B22F2201/11 ,  B22F2201/20 ,  B22F2202/05 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2999/00 ,  C21D6/007 ,  C21D9/0068 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  H01F1/058 ,  H01F1/059 ,  H01F41/0253 ,  H01F41/0266 ,  B22F3/02 ,  B22F3/1007

Abstract: A method of making a rare earth magnet containing zero heavy rare earth elements includes a step of mixing the fine grain power with the lubricant having a weight content of at least 0.03 wt. % and no greater than 0.2 wt. % for a period of between 1 and 2 hours. The step of pulverizing is further defined as jet milling the alloy powder with the lubricant using a carrier gas of argon or nitrogen. The method further includes a step of controlling oxygen content during the steps of melting, forming, disintegrating, mixing, pulverizing, molding, and sintering whereby the impurities including Carbon (C), Oxygen (O), and Nitrogen (N) satisfies 1.2C+0.6O+N≦2800 ppm. A rare earth magnet composition including C, O, and N whereby C, O, and N satisfies 1.2C+0.6O+N≦2800 ppm and has zero heavy rare earth elements.

公开(公告)号：US20170186521A1

公开(公告)日：2017-06-29

申请号：US15116103

申请日：2015-01-20

Applicant: NISSHIN SEIFUN GROUP INC. ,  NISSHIN ENGINEERING INC.

Inventor： Keitaroh NAKAMURA ,  Akihiro KINOSHITA ,  Naohito UEMURA

IPC: H01F7/02 ,  B22F1/00 ,  C22C33/02 ,  B22F1/02

CPC classification number: H01F7/02 ,  B22F1/0018 ,  B22F1/0048 ,  B22F1/0088 ,  B22F1/02 ,  B22F7/062 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/02 ,  C22C2202/02 ,  H01F1/061 ,  B22F2201/01 ,  B22F2201/02

Abstract: Provided is a method for manufacturing magnetic particles, in which an oxidation treatment, a reduction treatment, and a nitriding treatment are performed in that order on raw material particles with a core-shell structure in which a silicon oxide layer is formed on the surfaces of iron microparticles, thereby nitriding the iron microparticles while maintaining the core-shell structure. Due to this configuration, granular magnetic particles with a core-shell structure in which a silicon oxide layer is formed on the surfaces of iron nitride microparticles can be obtained.

公开(公告)号：US20170182558A1

公开(公告)日：2017-06-29

申请号：US15389629

申请日：2016-12-23

Applicant: Matheson Tri-Gas, Inc.

Inventor： Hideharu Shimizu ,  Mark W. Raynor ,  Daniel Tempel ,  Junpin Yao ,  Larry Wagg ,  Robert Torres, JR.

IPC: B22F3/105 ,  B33Y50/02 ,  B33Y30/00 ,  B33Y80/00 ,  B22F3/10 ,  B23K15/00 ,  B23K26/342 ,  B23K26/60 ,  C23C8/24 ,  C23C8/20 ,  C23C8/10 ,  C23C8/28 ,  C23C8/36 ,  C23C10/08 ,  C23C12/02 ,  B33Y10/00

CPC classification number: B22F3/1055 ,  B22F2003/1056 ,  B22F2999/00 ,  B23K10/027 ,  B23K15/0086 ,  B23K15/0093 ,  B23K15/10 ,  B23K26/126 ,  B23K26/127 ,  B23K26/342 ,  B23K26/38 ,  B23K26/60 ,  B29C64/10 ,  B29C64/314 ,  B33Y10/00 ,  B33Y30/00 ,  C23C24/103 ,  Y02P10/295 ,  B22F3/101 ,  B22F2201/013 ,  B22F2201/02 ,  B22F2201/03 ,  B22F2201/04 ,  B22F2201/10 ,  B22F2201/30 ,  B22F2201/32

Abstract: The present invention generally relates to methods and apparatuses adapted to perform additive manufacturing (AM) processes and the resulting products made therefrom, and specifically, to AM processes that employ an energy beam to selectively fuse a base material to produce an object. More particularly, the invention relates to methods and systems that use reactive fluids to actively manipulate the surface chemistry of the base material prior to, during and/or after the AM process.

公开(公告)号：US20170173690A1

公开(公告)日：2017-06-22

申请号：US15384786

申请日：2016-12-20

Applicant: Sodick Co., Ltd.

Inventor： Mikio KANEKO

IPC: B22F3/105 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y30/00

CPC classification number: B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B22F2203/03 ,  B22F2999/00 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  Y02P10/295 ,  B22F2201/02 ,  B22F2201/11 ,  B22F2201/12

Abstract: A lamination molding apparatus, including a numerical control apparatus configured to form a desired lamination molding object by a repetition in accordance with a main program pre-created and numbered with a sequence number, the main program including a plurality of program lines, wherein the repetition includes forming a material powder layer of a predetermined thickness on a molding table for each divided layer, the molding table being vertically movable, the divided layer being obtained by dividing a shape of the desired lamination molding object at the predetermined thickness; and irradiating a predetermined area of the material powder layer with a laser beam to form a sintered layer.

公开(公告)号：US20170169922A1

公开(公告)日：2017-06-15

申请号：US15118117

申请日：2014-02-12

Applicant: NITTO DENKO CORPORATION

Inventor： Takashi OZAKI ,  Katsuya KUME ,  Toshiaki OKUNO ,  Izumi OZEKI ,  Tomohiro OMURE ,  Keisuke TAIHAKU ,  Takashi YAMAMOTO

IPC: H01F1/053 ,  H01F41/02 ,  H01F7/02

CPC classification number: H01F1/0536 ,  B22F3/1021 ,  B22F3/22 ,  B22F5/006 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/0278 ,  C22C38/002 ,  C22C38/005 ,  C22C2202/02 ,  H01F1/0577 ,  H01F7/02 ,  H01F41/0253 ,  H01F41/0273 ,  B22F2009/043 ,  B22F2009/044 ,  B22F2202/05 ,  B22F2201/01 ,  B22F2201/10 ,  B22F9/04 ,  B22F2201/02 ,  B22F2201/11 ,  B22F2201/12 ,  B22F9/023 ,  B22F1/0074 ,  B22F3/105

Abstract: Provided are a rare earth permanent magnet whose permanent magnetic properties are improved by making density of the magnet very high and a method for manufacturing a rare earth permanent magnet. Thus, magnet raw material is milled into magnet powder, and then a compound is formed by mixing the magnet powder thus milled with a binder. Next, the compound thus formed is subjected to hot-melt molding onto a supporting substrate so as to form a green sheet molded to a sheet-like shape. Thereafter, while the green sheet thus molded is softened by heating, magnetic field orientation is carried out by applying a magnetic field to the green sheet thus heated; and further, the green sheet having been subjected to the magnetic field orientation is calcined in non-oxidizing atmosphere, and then, sintering thereof is carried out at a sintering temperature to produce a permanent magnet having density of 95% or more.