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1. 发明授权

US11107627B2 Method and an apparatus for manufacturing an R-Fe-B sintered magnet 有权
公开(公告)号：US11107627B2
公开(公告)日：2021-08-31
申请号：US16236926
申请日：2018-12-31
申请人： Yantai Shougang Magnetic Materials, Inc.
发明人： Zhongjie Peng , Xiaotong Liu
IPC分类号： H01F41/02 , H01F1/057 , C23C4/134 , C23C4/02 , C23C4/08 , C23C4/18
摘要： A method of manufacturing a plurality of R—Fe—B sintered magnets using a plasma flame apparatus and a furnace. The method includes a first step of providing a sintered magnet block. Then, the sintered magnet block is machined to form machined magnets. The method continues with a step of cleaning surfaces of the machined magnets to form cleaned magnets. The method then proceeds with depositing a plurality of spherical droplets of a heavy rare earth powder selected from at least one of Dy or Tb on the surfaces of the cleaned magnets, to produce a plurality of magnets including a uniform film of Dy or Tb. Then, the magnets including the uniform film are sintered to diffuse the uniform film into the magnets through grain boundary phases of the magnets to produce the R—Fe—B sintered magnets. A plasma flame apparatus is also disclosed herein.

2. 发明授权

US11062827B2 Sintered magnet composition without heavy rare earth element and a method of making the sintered magnet 有权
公开(公告)号：US11062827B2
公开(公告)日：2021-07-13
申请号：US15401349
申请日：2017-01-09
申请人： Yantai Shougang Magnetic Materials, Inc.
发明人： Kaihong Ding , Zhongjie Peng , Guohai Wang , Xiulei Chen
IPC分类号： H01F41/02 , B22F3/16 , H01F1/057 , B22D11/00 , B22F1/00 , B22F3/24 , B22F9/04 , C21D6/00 , C21D9/00 , C22C38/00 , C22C38/06 , C22C38/10 , C22C38/16 , H01F1/058 , H01F1/059
摘要： A method of making a rare earth magnet containing zero heavy rare earth elements includes a step of mixing the fine grain powder 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.

3. 发明授权

US10978226B2 Sintered Nd—Fe—B magnet composition and a production method for the sintered Nd—Fe—B magnet 有权
公开(公告)号：US10978226B2
公开(公告)日：2021-04-13
申请号：US15588584
申请日：2017-05-05
申请人： Yantai Shougang Magnetic Materials, Inc.
发明人： Kaihong Ding , Zhongjie Peng , Guohai Wang , Xiulei Chen
IPC分类号： H01F1/057 , B22F9/04 , B22F3/24 , H01F41/02 , B22D11/00 , B22F3/04 , B22F3/16 , B22F9/02 , C21D6/00 , C21D9/00 , C22C38/00 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16
摘要： A sintered Nd—Fe—B magnet comprising at least one light rare earth element having a weight content between 31 wt. % and 35 wt. %, at least one heavy rare earth element having a weight content of no more than 0.2 wt. %, B having a weight content between 0.95 wt. % and 1.2 wt. %, at least one additive including Ti and having a weight content between 1.31 wt. % and 7.2 wt. %, Fe as a balance, and impurities including C, O, and N. Ti has a weight content between 0.3 wt. % and 1 wt. % and forms a Titanium-Iron-Boron phase with Fe and Boron B and being present in the sintered Nd—Fe—B magnet between 0.86 vol. % and 2.85 vol. %. The C, O, and N satisfy 630 ppm≤1.2C+0.6O+N≤3680 ppm. The sintered Nd—Fe—B magnet has a squareness factor of at least 0.95.

4. 发明申请

US20190206618A1 METHOD AND AN APPARATUS FOR MANUFACTURING AN R-FE-B SINTERED MAGNET 审中-公开
公开(公告)号：US20190206618A1
公开(公告)日：2019-07-04
申请号：US16236926
申请日：2018-12-31
申请人： Yantai Shougang Magnetic Materials, Inc.
发明人： Zhongjie Peng , Xiaotong Liu
IPC分类号： H01F41/02 , H01F1/057 , C23C4/134 , C23C4/08 , C23C4/18 , C23C4/02
CPC分类号： H01F41/0293 , C23C4/02 , C23C4/08 , C23C4/134 , C23C4/18 , H01F1/0577
摘要： A method of manufacturing a plurality of R—Fe—B sintered magnets using a plasma flame apparatus and a furnace. The method includes a first step of providing a sintered magnet block. Then, the sintered magnet block is machined to form machined magnets. The method continues with a step of cleaning surfaces of the machined magnets to form cleaned magnets. The method then proceeds with depositing a plurality of spherical droplets of a heavy rare earth powder selected from at least one of Dy or Tb on the surfaces of the cleaned magnets, to produce a plurality of magnets including a uniform film of Dy or Tb. Then, the magnets including the uniform film are sintered to diffuse the uniform film into the magnets through grain boundary phases of the magnets to produce the R—Fe—B sintered magnets. A plasma flame apparatus is also disclosed herein.

5. 发明申请

US20170372823A1 SINTERED ND-FE-B MAGNET COMPOSITION AND A PRODUCTION METHOD FOR THE SINTERED ND-FE-B MAGNET 审中-公开
公开(公告)号：US20170372823A1
公开(公告)日：2017-12-28
申请号：US15588584
申请日：2017-05-05
申请人： Yantai Shougang Magnetic Materials, Inc.
发明人： Kaihong Ding , Zhongjie Peng , Guohai Wang , Xiulei Chen
IPC分类号： H01F1/057 , B22D11/00 , C22C38/10 , C22C38/06 , C22C38/00 , B22F9/04 , C21D6/00 , C22C38/14 , B22F3/04 , B22F3/16 , B22F3/24 , B22F9/02 , C22C38/16 , C21D9/00
CPC分类号： H01F1/0577 , B22D11/001 , B22F3/04 , B22F3/16 , B22F3/24 , B22F9/023 , B22F9/04 , B22F2003/248 , B22F2009/042 , B22F2009/044 , B22F2201/20 , B22F2202/05 , B22F2301/355 , B22F2998/10 , B22F2999/00 , C21D6/00 , C21D9/0068 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , C22C2202/02 , H01F41/0253 , B22F1/0059 , B22F3/087 , B22F3/14 , B22F2201/02 , B22F2201/11
摘要： A sintered Nd—Fe—B magnet comprising at least one light rare earth element having a weight content between 31 wt. % and 35 wt. %, at least one heavy rare earth element having a weight content of no more than 0.2 wt. %, B having a weight content between 0.95 wt. % and 1.2 wt. %, at least one additive including Ti and having a weight content between 1.31 wt. % and 7.2 wt. %, Fe as a balance, and impurities including C, O, and N. Ti has a weight content between 0.3 wt. % and 1 wt. % and forms a Titanium-Iron-Boron phase with Fe and Boron B and being present in the sintered Nd—Fe—B magnet between 0.86 vol. % and 2.85 vol. %. The C, O, and N satisfy 630 ppm≦1.2C+0.6O+N≦3680 ppm. The sintered Nd—Fe—B magnet has a squareness factor of at least 0.95.

6. 发明申请

US20160125985A1 Method Of Preparing A Hard Aluminum Film On The Surface Of A ND-FE-B Magnet 审中-公开
标题翻译：在ND-FE-B磁体表面制备硬铝膜的方法
公开(公告)号：US20160125985A1
公开(公告)日：2016-05-05
申请号：US14931035
申请日：2015-11-03
申请人： Yantai Shougang Magnetic Materials Inc.
发明人： Kunkun Yang , Zhongjie Peng
IPC分类号： H01F1/057 , C23C14/35 , C23C14/24 , C25D11/04 , C23C14/32
CPC分类号： H01F1/057 , C23C14/16 , C23C14/24 , C23C14/325 , C23C14/35 , C23C14/5853 , C25D11/04 , H01F41/026
摘要： The present invention provides a Nd—Fe—B magnet including a first film of aluminum having a first predetermined hardness and an anti-corrosive coating of oxidized aluminum having a second predetermined hardness on the first film. The second predetermined hardness is at least eight times the first predetermined hardness. The present invention also provides a method for preparing a hard aluminum film on the Nd—Fe—B magnet. The method includes depositing the first film on the Nd—Fe—B magnet under vacuum, disposing the Nd—Fe—B magnet having the first film on the anode, and subjecting the Nd—Fe—B magnet having the first film to the anodic oxidation process under a solution containing an electrolyte present between 15 wt. % to 20 wt. % to form the anti-corrosive coating on the first film to prevent the Nd—Fe—B magnet from corroding. The electrolyte is selected from at least one of sulfuric acid, chromic acid, boric acid, and oxalic acid.
摘要翻译：本发明提供一种Nd-Fe-B磁体，其包括具有第一预定硬度的铝的第一膜和在第一膜上具有第二预定硬度的氧化铝的防腐蚀涂层。第二预定硬度是第一预定硬度的至少八倍。本发明还提供了在Nd-Fe-B磁体上制备硬质铝膜的方法。该方法包括在真空下在Nd-Fe-B磁体上沉积第一膜，将具有第一膜的Nd-Fe-B磁体置于阳极上，并将具有第一膜的Nd-Fe-B磁体置于阳极在含有电解质的溶液下，在15wt。％至20重量％％以在第一层膜上形成防腐涂层，以防止Nd-Fe-B磁体腐蚀。电解质选自硫酸，铬酸，硼酸和草酸中的至少一种。

7. 发明申请

US20180040398A9 Method Of Preparing A Hard Aluminum Film On The Surface Of A ND-FE-B Magnet 审中-公开
公开(公告)号：US20180040398A9
公开(公告)日：2018-02-08
申请号：US14931035
申请日：2015-11-03
申请人： Yantai Shougang Magnetic Materials Inc.
发明人： Kunkun Yang , Zhongjie Peng
IPC分类号： H01F1/057 , C23C14/35 , C23C14/24 , C25D11/04 , C23C14/32
CPC分类号： H01F1/057 , C23C14/16 , C23C14/24 , C23C14/325 , C23C14/35 , C23C14/5853 , C25D11/04 , H01F41/026
摘要： The present invention provides a Nd—Fe—B magnet including a first film of aluminum having a first predetermined hardness and an anti-corrosive coating of oxidized aluminum having a second predetermined hardness on the first film. The second predetermined hardness is at least eight times the first predetermined hardness. The present invention also provides a method for preparing a hard aluminum film on the Nd—Fe—B magnet. The method includes depositing the first film on the Nd—Fe—B magnet under vacuum, disposing the Nd—Fe—B magnet having the first film on the anode, and subjecting the Nd—Fe—B magnet having the first film to the anodic oxidation process under a solution containing an electrolyte present between 15 wt. % to 20 wt. % to form the anti-corrosive coating on the first film to prevent the Nd—Fe—B magnet from corroding. The electrolyte is selected from at least one of sulfuric acid, chromic acid, boric acid, and oxalic acid.

8. 发明申请

US20160240309A1 METHOD FOR DEPOSITING A COMPOSITE FILM ON A PERMANENT NEODYMIUM-IRON-BORN MAGNET 审中-公开
标题翻译：复合薄膜沉积在永磁体镍铁磁铁上的方法
公开(公告)号：US20160240309A1
公开(公告)日：2016-08-18
申请号：US15042287
申请日：2016-02-12
申请人： Yantai Shougang Magnetic Materials Inc.
发明人： Daoning Jia , Zhongjie Peng , Kunkun Yang
IPC分类号： H01F41/02
CPC分类号： H01F41/026 , C23C14/022 , C23C14/16 , C23C14/325 , H01F1/0577
摘要： A method for depositing a composite film on a permanent Nd—Fe—B magnet including step of spraying the anti-corrosive film of a composite resin selected from one of epoxy and phenol on the coated permanent Nd—Fe—B magnet and curing the layered permanent Nd—Fe—B magnet at a first final temperature of 120° C. for a first time interval of 30 minutes and at a second final temperature of 170° C. for a second time interval of 30 minutes. The method also includes a step of cooling the chamber by feeding a fluid of water at a cooling temperature of between 0° C. and 5° C. through the chamber and the arc source. The method further includes a step of adjusting the target source of metal and a control magnet of the arc source defining a predetermined distance of between 1 cm and 10 cm between the target source of metal and the control magnet of the arc source.
摘要翻译：一种在永久性Nd-Fe-B磁体上沉积复合膜的方法，包括将选自环氧树脂和苯酚中的一种复合树脂的防腐蚀膜喷涂在涂覆的永久性Nd-Fe-B磁体上并固化层状永久性Nd-Fe-B磁体，第一最终温度为120℃，第一时间间隔为30分钟，第二最终温度为170℃，持续30分钟的第二时间间隔。该方法还包括通过在室和电弧源之间通过在0℃和5℃之间的冷却温度下供给水的流体来冷却室的步骤。该方法还包括调整目标金属源和弧光源的控制磁体的步骤，其限定目标金属源和电弧源的控制磁体之间在1cm和10cm之间的预定距离。

9. 发明申请

US20160152003A1 APPARATUS AND A METHOD FOR BONDING AND INSULATING ND-FE-B PERMANENT MAGNETS 有权
标题翻译：装置和用于粘结和绝缘ND-FE-B永久磁铁的方法
公开(公告)号：US20160152003A1
公开(公告)日：2016-06-02
申请号：US14953843
申请日：2015-11-30
申请人： Yantai Shougang Magnetic Materials Inc.
发明人： Zhongjie Peng , Kunkun Yang , Daoning Jia
IPC分类号： B32B7/12 , B32B15/18 , B32B37/12 , B32B37/10 , B32B38/00 , B32B37/16 , B32B37/00 , B32B38/10 , B32B38/16 , B32B15/04 , B32B37/06
CPC分类号： B32B7/12 , B32B15/043 , B32B15/18 , B32B37/0053 , B32B37/06 , B32B37/10 , B32B37/12 , B32B37/1284 , B32B37/16 , B32B38/0036 , B32B38/10 , B32B38/162 , B32B2038/0076 , B32B2255/06 , B32B2255/26 , B32B2305/72 , B32B2307/208 , B32B2307/304 , B32B2309/025 , B32B2309/12 , B32B2311/00 , B32B2311/30 , B32B2313/02 , H01F1/0577 , H01F7/021 , H01F41/0253
摘要： A method for bonding a plurality of Nd—Fe—B permanent magnets includes a step of curing the layer of insulating adhesive at an initial temperature of between 20° C. and 250° C. and between 0.1 hr and 24 hr prior to the step of sandwiching. A predetermined clamping pressure of between 0.1 MPa and 10 MPa is then applied to the Nd—Fe—B permanent magnets. The stacked Nd—Fe—B permanent magnet is cured at a predetermined temperature of between 150° C. and 350° C. and between 0.1 hr and 12 hr. A clamping tool apparatus includes at least one of three intermediate guides disposed on the lower plate, in the chamber, spaced from the magnet positioning members, and extends to a proximal end defining a second predetermined distance with the second predetermined distance being less than the first predetermined distance of the magnet positioning members. The upper plate defines a plurality of apertures for receiving the magnet positioning members and the intermediate guides.
摘要翻译：一种用于接合多个Nd-Fe-B永磁体的方法包括在步骤之前在20℃至250℃的初始温度和0.1小时至24小时之间固化绝缘粘合剂层的步骤的夹心。然后将约0.1MPa至10MPa的预定夹紧压力施加到Nd-Fe-B永磁体。堆叠的Nd-Fe-B永磁体在150℃至350℃的预定温度和0.1小时至12小时之间固化。夹紧工具装置包括设置在腔室中的下板上的三个中间导片中的至少一个，与磁体定位构件间隔开，并且延伸到限定第二预定距离的第二预定距离的近端，其中第二预定距离小于第一磁铁定位构件的预定距离。上板限定了用于接收磁体定位构件和中间导向件的多个孔。

10. 发明申请

US20160122864A1 APPARATUS AND METHOD FOR COATING OF SMALL ND-FE-B MAGNETS 审中-公开
标题翻译：用于涂覆小型ND-FE-B磁铁的装置和方法
公开(公告)号：US20160122864A1
公开(公告)日：2016-05-05
申请号：US14933516
申请日：2015-11-05
申请人： Yantai Shougang Magnetic Materials Inc.
发明人： Zhongjie Peng , Kunkun Yang , Daoning Jia
IPC分类号： C23C14/32 , C23C14/35 , C23C14/02
CPC分类号： C23C14/32 , C23C14/021 , C23C14/16 , C23C14/223 , C23C14/35 , C23C14/50 , H01F41/026
摘要： The present invention provides an apparatus and a method for coating small Nd—Fe—B magnets. The apparatus includes a furnace having a roller including at least one stirring piece disposed in the compartment. The stifling pieces have an isosceles triangle or trapezoidal shaped cross-section. The side wall of the furnace defines an inlet aperture and an outlet aperture disposed diametrically opposed to one another. A plurality of target source holders include two first target source holders and two second target source holders disposed on the side wall and spaced from one another and between the inlet aperture and the outlet aperture. The method includes a step of disposing a plurality of conductors with the small Nd—Fe—B magnets in the compartment of the roller. The small Nd—Fe—B magnets are mixed with the plurality of conductors in the roller with the roller being rotated of between 5 rpm and 20 rpm.
摘要翻译：本发明提供一种用于涂覆小型Nd-Fe-B磁体的装置和方法。该设备包括一个炉子，该炉子具有设置在隔室中的至少一个搅拌件的辊子。窒息件具有等腰三角形或梯形截面。炉的侧壁限定入口孔和彼此直径相对设置的出口孔。多个目标源保持器包括两个第一目标源保持器和设置在侧壁上并且彼此间隔开且在入口孔和出口孔之间的两个第二目标源保持器。该方法包括将具有小的Nd-Fe-B磁体的多个导体设置在辊的隔室中的步骤。小型Nd-Fe-B磁体与辊中的多个导体混合，辊的旋转速度在5rpm和20rpm之间。

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