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公开(公告)号：US20200161047A1
公开(公告)日：2020-05-21
申请号：US16605008
申请日：2018-03-27
Applicant: ADVANCED TECHNOLOGY & MATERIALS CO., LTD.
Inventor： Lei Zhou , Xinghua Cheng , Tao Liu , Xiaojun Yu
Abstract: A method for preparing rare earth permanent magnet material, comprising: firstly weighing powders of three raw materials, H, M and Q, according to the atomic percentage content in general formula H100-x-yMxQy, and performing the mixing treatment and sieving treatment in a nitrogen gas or other oxygen-free environments to obtain a composite powder; then machining a sintered NdFeB magnet into a prescribed shape and size, and performing the surface cleaning and drying to obtain a NdFeB magnet to be treated; next, adhering the composite powder to the surface of the NdFeB magnet to be treated by static electricity in an oxygen-free environment; next performing a vacuum thermal treatment and tempering treatment sequentially thereby obtaining the rare earth permanent magnet material. For the above method, the efficiency is high and binding force between the heavy rare earth element attachments and the substrate magnet is strong, it is convenient for the residual powder materials to be recycled. The coercivity of the prepared NdFeB magnet can be increased by 4000-14000 Oe, the remanence is only reduced by 1-2%, and the magnet with equivalent performance can be saved 30% of the heavy rare earth usage amount.
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公开(公告)号：US10385428B2
公开(公告)日：2019-08-20
申请号：US15326473
申请日：2015-09-30
Inventor： Xiaoming Li , Lizhi Wu , Hailin Zhong , Xuebing Wang , Chunjiang Kuang , Yucheng Fang
IPC: C22C33/02 , C22C38/00 , C22C38/02 , C22C38/10 , C22C38/16 , C22C45/02 , B22F1/00 , H01F1/147 , H01F1/153 , H01F1/20 , C22C38/36 , B22F3/15 , B22F9/08 , C22C38/04 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/30 , B22F5/00
Abstract: A powder metallurgy wear-resistant tool steel includes chemical components by mass percent of: V: 12.2%-16.2%, Nb: 1.1%-3.2%, C: 2.6%-4.0%, Si: ≤2.0%, Mn: 0.2%-1.5%, Cr: 4.0%-5.6%, Mo: ≤3.0%, W: 0.1%-1.0%, Co: 0.05%-0.5%, N: 0.05%-0.7%, with balance iron and impurities; wherein a carbide component of the powder metallurgy wear-resistant tool steel is an MX carbide with a NaCl type face-centered cubic lattice structure; wherein an M element of the MX carbide comprises V and Nb, and an X element comprises C and N.
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公开(公告)号：US20240001438A1
公开(公告)日：2024-01-04
申请号：US18250553
申请日：2021-03-16
Inventor： Wenzhi CHEN , Guodong LIU , Baisong LI , Yang SHI , Zhigang LI
CPC classification number: B22D11/0611 , B22D11/0642 , B22D11/0682 , B22D11/22
Abstract: Disclosed is an amorphous nanocrystalline alloy strip. When the amorphous nanocrystalline alloy strip is cut into a plurality of narrow strips having a same width of less than or equal to 10 mm, a relative length difference among the plurality of narrow strips is not greater than 0.50%. Further disclosed is a method for manufacturing the amorphous nanocrystalline alloy strip. The amorphous nanocrystalline alloy strip has good surface flatness. The transverse temperature non-uniformity of molten steel inside a melting pool and the surface temperature non-uniformity of a cooling roller within a strip manufacturing position range are controlled in a process of manufacturing the amorphous nanocrystalline alloy strip, so that the surface flatness of the manufactured strip is improved. The manufacturing process is simple and convenient.
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公开(公告)号：US09053847B2
公开(公告)日：2015-06-09
申请号：US14348882
申请日：2012-09-27
Applicant: Advanced Technology & Materials Co., Ltd.
Inventor： Shaoxiong Zhou , Guodong Liu , Wenzhi Chen , Lidong Ding , Jian Wang , Quan Li , Zhiying Zhang , Pei Zhao
CPC classification number: H01F1/15308 , B22D11/0611 , C21D8/1211 , C22C1/00 , C22C45/00 , H01F1/15341
Abstract: The invention belongs to the technical field of rapid solidification of amorphous alloy and concretely relates to an iron-based amorphous alloy broad ribbon, wherein the width is 220-1000 mm, the thickness is 0.02-0.03 mm, the transversal thickness deviation is smaller than +/−0.002 mm, the lamination factor is larger than 0.84, the saturation magnetic-flux density is larger than 1.5 T, the iron loss is smaller than 0.20 W/kg under the conditions that the frequency is 50 Hz and the maximum magnetic-flux density is 1.3 T, and the exciting power is smaller than 0.50 VA/kg. The invention also relates to a manufacturing method of the broad ribbon, and a single-roll quenching method is adopted, wherein the width of a nozzle slot is 0.4-0.7 mm, the transversal width deviation of the nozzle slot is smaller than +/−0.05 mm, the transversal flatness deviation of a cooling roll (4) is smaller than 0.02 mm, and the surface roughness Ra is smaller than 0.0005 mm.
Abstract translation: 本发明属于非晶合金快速凝固技术领域，具体涉及铁基非晶合金宽带，其宽度为220-1000mm，厚度为0.02-0.03mm，横向厚度偏差小于 +/- 0.002mm，层压系数大于0.84，饱和磁通密度大于1.5T，在频率为50Hz的条件下铁损小于0.20W / kg， 磁通密度为1.3T，励磁功率小于0.50VA / kg。 本发明还涉及宽带的制造方法，采用单辊淬火方法，其中喷嘴槽的宽度为0.4-0.7mm，喷嘴槽的横向宽度偏差小于+/- 0.05mm，冷却辊（4）的横向平坦度偏差小于0.02mm，表面粗糙度Ra小于0.0005mm。
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公开(公告)号：US10233519B2
公开(公告)日：2019-03-19
申请号：US15326474
申请日：2015-09-30
Inventor： Lizhi Wu , Xiaoming Li , Yunfeng Yang , Chunjiang Kuang , Dongmei Xin , Liqing Shao , Yucheng Fang
Abstract: A spray-formed high-speed steel includes chemical components by mass percent of: C: 0.85-1.65%, Si: 0.1-1.2%, Cr: 3.5-8.0%, W: 4.0-6.5%, Mo: 4.5-7.0%, V: 1.0-4.0%, Co: 1.0-8.0%, Mn: 0.2-0.8%, and Nb: 0.2-3.5%, with balance of iron and impurities.
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Patent Agency Ranking
公开(公告)号：US11984258B2
公开(公告)日：2024-05-14
申请号：US16770608
申请日：2018-11-14
Applicant: ADVANCED TECHNOLOGY & MATERIALS CO., LTD.
Inventor： Lei Zhou , Tao Liu , Xinghua Cheng , Xiaojun Yu
CPC classification number: H01F41/0293 , B22F3/105 , B22F3/24 , C22C32/00 , C22C32/001 , C22C38/005 , C23C12/02 , H01F1/057 , H01F41/0266 , B22F2003/1051 , B22F2003/248 , B22F2301/355 , B22F2304/10 , C22C2202/02
Abstract: The present invention discloses a rare earth permanent magnet material and a preparation method thereof. The method includes a sintering treatment step performed by laying a composite powder for diffusion on the surface of a neodymium iron boron magnetic powder layer and carrying out spark plasma sintering treatment to obtain a neodymium iron boron magnet with a diffusion layer solidified on the surface thereof, and diffusion heat treatment and tempering steps. The method of the present invention has high efficiency, good diffusion effects, and reduced quantities of heavy rare earth elements.
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公开(公告)号：US20230044409A1
公开(公告)日：2023-02-09
申请号：US17791493
申请日：2020-06-04
Applicant: AT&M ENVIRONMENTAL ENGINEERING TECHNOLOGY CO., LTD. , ADVANCED TECHNOLOGY & MATERIALS CO., LTD.
Inventor： Hu GU , Junjun YANG , Fan WANG , Guanying LIU , Yu ZHANG , Ying DAI , Xuan YANG , Kun WANG , Shiyu LIN
Abstract: The present invention discloses a Fe—Al-based metal porous membrane and a preparation method thereof, which relate to the technical field of industrial gas-solid and liquid-solid separation and purification, and mainly address problems in the prior art, such as cracking-prone and peeling of a membrane layer of an existing Fe—Al-based metal porous membrane during its preparation and use. The preparation method of the present invention comprises the steps of: adding a Fe—Al-based metal powder and a metal fiber powder into an organic-additive-added water-based solvent, and mixing them into a slurry; tape casting the slurry, through a tape casting machine, to form a membrane green body on a metal substrate layer, and letting it dry; and placing the dried membrane green body in a sintering furnace, to remove organic substances and perform high-temperature sintering and predetermined-temperature reaction synthesis.
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公开(公告)号：US20200303120A1
公开(公告)日：2020-09-24
申请号：US16770608
申请日：2018-11-14
Applicant: ADVANCED TECHNOLOGY & MATERIALS CO., LTD.
Inventor： Lei Zhou , Tao Liu , Xinghua Cheng , Xiaojun Yu
Abstract: The present invention discloses a rare earth permanent magnet material and a preparation method thereof The method comprises: a sintering treatment step: laying a composite powder for diffusion on the surface of a neodymium iron boron magnetic powder layer and carrying out spark plasma sintering treatment to obtain a neodymium iron boron magnet with a diffusion layer solidified on the surface thereof, wherein the compositional proportional formula of the composite powder for diffusion is H100-x-yMxQy, where H is one or more of a metal powder, a fluoride powder, or an oxide powder of Dy, Tb, Ho, and Gd, M is a Nd, Pr, or NdPr metal powder, and Q is one or more of Cu, Al, Zn, and Sn metal powders, x and y are respectively the atomic percentages of component M and component Q in the composite powder for diffusion, x is 0-20, and y is 0-40; and diffusion heat treatment and tempering steps. The method of the present invention has high efficiency, good diffusion effects, and reduced quantities of heavy rare earth elements.
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公开(公告)号：US20140283957A1
公开(公告)日：2014-09-25
申请号：US14348882
申请日：2012-09-27
Applicant: Advanced Technology & Materials Co., Ltd.
Inventor： Shaoxiong Zhou , Guodong Liu , Wenzhi Chen , Lidong Ding , Jian Wang , Quan Li , Zhiying Zhang , Pei Zhao
IPC: H01F1/153
CPC classification number: H01F1/15308 , B22D11/0611 , C21D8/1211 , C22C1/00 , C22C45/00 , H01F1/15341
Abstract: The invention belongs to the technical field of rapid solidification of amorphous alloy and concretely relates to an iron-based amorphous alloy broad ribbon, wherein the width is 220-1000 mm, the thickness is 0.02-0.03 mm, the transversal thickness deviation is smaller than +/−0.002 mm, the lamination factor is larger than 0.84, the saturation magnetic-flux density is larger than 1.5 T, the iron loss is smaller than 0.20 W/kg under the conditions that the frequency is 50 Hz and the maximum magnetic-flux density is 1.3 T, and the exciting power is smaller than 0.50 VA/kg. The invention also relates to a manufacturing method of the broad ribbon, and a single-roll quenching method is adopted, wherein the width of a nozzle slot is 0.4-0.7 mm, the transversal width deviation of the nozzle slot is smaller than +/−0.05 mm, the transversal flatness deviation of a cooling roll (4) is smaller than 0.02 mm, and the surface roughness Ra is smaller than 0.0005 mm.
Abstract translation: 本发明属于非晶合金快速凝固技术领域，具体涉及铁基非晶合金宽带，其宽度为220-1000mm，厚度为0.02-0.03mm，横向厚度偏差小于 +/- 0.002mm，层压系数大于0.84，饱和磁通密度大于1.5T，在频率为50Hz的条件下铁损小于0.20W / kg， 磁通密度为1.3T，励磁功率小于0.50VA / kg。 本发明还涉及宽带的制造方法，采用单辊淬火方法，其中喷嘴槽的宽度为0.4-0.7mm，喷嘴槽的横向宽度偏差小于+/- 0.05mm，冷却辊（4）的横向平坦度偏差小于0.02mm，表面粗糙度Ra小于0.0005mm。
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公开(公告)号：US10385442B2
公开(公告)日：2019-08-20
申请号：US15300683
申请日：2015-11-06
Applicant: ADVANCED TECHNOLOGY & MATERIALS CO., LTD.
Inventor： Lei Zhou , Tao Liu , De Lin , Xiaojun Yu
Abstract: The present application provides a method for preparing a rare-earth permanent magnetic material with grain boundary diffusion using composite target by vapor deposition, in which the composite target is evaporated and attached to the surface of the NdFeB magnet, and in which medium-high temperature treatment and low temperature aging treatment are employed, resulting in that the coercive force of the magnet is improved significantly and the remanence and the magnetic energy product substantially are not reduced. The advantageous effects of the present application is as follows: the coercive force of the magnet is improved, and meanwhile the defects such as melting pits and crystal grain growth and the like caused by high temperature treatment for the long time are eliminated, and the usage amount of heavy rare-earth is greatly reduced, thereby lowering the cost of the product.
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