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11.发明公开公开(公告)号：US20230332276A1
公开(公告)日：2023-10-19
申请号：US18245645
申请日：2021-09-16
IPC分类号： C22C19/05 , C22F1/10 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/30 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/22 , C21D9/46 , C21D8/12 , C21D6/00 , B33Y10/00 , B33Y80/00 , B22F5/00 , B33Y40/20 , B22F10/64 , H05K9/00 , B21D22/02
CPC分类号： C22C19/057 , C22F1/10 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/30 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/22 , C21D9/46 , C21D8/1216 , C21D8/1244 , C21D6/002 , C21D6/005 , C21D6/007 , C21D6/008 , B33Y10/00 , B33Y80/00 , B22F5/006 , B33Y40/20 , B22F10/64 , H05K9/0075 , B21D22/022 , C22C2202/02 , B22F2998/10
摘要： A method for producing three-dimensional magnetic shields with a sufficient permeability from unannealed, soft-annealed, or magnetization annealed magnetically soft metal sheets, wherein the metal sheet is either cold formed into the three-dimensional component in a one-step or multi-step process, then is subjected to a (magnetization) annealing to increase the permeability, and is then transferred to a forming tool, in which it is held and/or pressed in a tool, which has the desired contour of the component, and is optionally shape-corrected or calibrated by the tool, and allowed to cool in the tool, or a sheet is heated and then formed to the desired geometry in a hot-forming tool and held in it, and is allowed to cool in the tool, or the three-dimensional component is generated by additive production and then is subjected to a (magnetization) annealing to increase the permeability; the invention also relates to a shielding device.
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公开(公告)号：US11773460B2
公开(公告)日：2023-10-03
申请号：US17044601
申请日：2019-03-22
发明人： Yuji Arai , Shinji Yoshida , Atsushi Soma , Hiroki Kamitani
IPC分类号： C21D9/00 , C21D6/04 , C21D6/00 , C22C38/00 , C21D9/08 , C21D8/10 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/30 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54
CPC分类号： C21D9/085 , C21D6/004 , C21D6/005 , C21D6/007 , C21D6/008 , C21D8/105 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/30 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54
摘要： The steel pipe according to the present disclosure contains a chemical composition consisting of, in mass %, C: 0.25 to 0.50%, Si: 0.05 to 0.50%, Mn: 0.05 to 1.00%, P: 0.025% or less, S: 0.0050% or less, Al: 0.005 to 0.100%, Cr: 0.30 to 1.50%, Mo: 0.25 to 3.00%, Ti: 0.002 to 0.050%, N: 0.0010 to 0.0100% and O: 0.0030% or less, with the balance being Fe and impurities. The steel pipe contains an amount of dissolved C within a range of 0.010 to 0.050 mass %. The tensile yield strength in the axial direction and the circumferential direction is 862 to 965 MPa, and the yield ratio in the axial direction is 90% or more. The tensile yield strength in the circumferential direction is 30 to 80 MPa higher than the compressive yield strength in the circumferential direction.
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公开(公告)号：US20230290551A1
公开(公告)日：2023-09-14
申请号：US18019518
申请日：2021-05-11
申请人： Hitachi, Ltd.
发明人： Matahiro KOMURO , Yusuke ASARI , Kazuya SHINAGAWA , Shinya TAMURA , Tomohiro TABATA , Shohei TERADA
IPC分类号： H01F1/16 , H02K1/02 , C21D3/08 , C21D1/76 , C21D1/18 , C21D9/46 , C22C38/00 , C22C38/10 , C22C38/12 , C21D6/00
CPC分类号： H01F1/16 , H02K1/02 , C21D3/08 , C21D1/76 , C21D1/18 , C21D9/46 , C22C38/001 , C22C38/10 , C22C38/12 , C21D6/007 , C21D2211/001 , C22C2202/02
摘要： The present invention provides a soft magnetic iron sheet exhibiting a high saturation magnetic flux density and a low iron loss as compared with an electromagnetic pure iron sheet, a method for producing the soft magnetic iron sheet, and, an iron core and a dynamo-electric machine, each using the soft magnetic iron sheet. The soft magnetic iron sheet according to the present invention includes: iron as a main component; and nitrogen, in which the soft magnetic iron sheet includes, along a thickness direction of the soft magnetic iron sheet: a high nitrogen concentration layer having a nitrogen concentration of 2 at. % to 11 at. %; a low nitrogen concentration layer having a nitrogen concentration of half or less of the nitrogen concentration of the high nitrogen concentration layer; and a nitrogen concentration transition layer connecting the nitrogen concentration of the high nitrogen concentration layer and the nitrogen concentration of the low nitrogen concentration layer, and wherein a surface layer region including at least both main surfaces of the soft magnetic iron sheet is the low nitrogen concentration layer.
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14.发明公开公开(公告)号：US20230175091A1
公开(公告)日：2023-06-08
申请号：US17999047
申请日：2021-05-25
IPC分类号： C21D9/46 , C22C38/58 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/42 , C22C38/38 , C22C38/54 , C22C38/32 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/22 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C21D6/00 , C21D8/02 , C21D1/18
CPC分类号： C21D9/46 , C22C38/58 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/42 , C22C38/38 , C22C38/54 , C22C38/32 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/22 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/005 , C22C38/002 , C22C38/001 , C21D6/002 , C21D6/004 , C21D6/005 , C21D6/007 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0263 , C21D1/18 , C21D2211/008
摘要： Provided is an abrasion-resistant steel plate excellent in both abrasion resistance and wide bending workability. An abrasion-resistant steel plate comprises a specific chemical composition, wherein a volume fraction of martensite at a depth of 1 mm from a surface of the abrasion-resistant steel plate is 90% or more, a number density of TiC precipitates of 0.5 μm or more in equivalent circular diameter at a depth of 1 mm from the surface is 400/mm2 or more, hardness at a depth of 1 mm from the surface is 360 HBW 10/3000 or more in Brinell hardness, and a transverse direction hardness difference is 30Hv10 or less in Vickers hardness, the transverse direction hardness difference being defined as a difference in the hardness at a depth of 1 mm from the surface between two points adjacent at intervals of 10 mm in a transverse direction of the abrasion-resistant steel plate.
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15.发明申请公开(公告)号：US20190203311A1
公开(公告)日：2019-07-04
申请号：US16333947
申请日：2017-09-13
发明人： PETER PALZER , THOMAS EVERTZ , MANUEL OTTO , KAI KÖHLER
IPC分类号： C21D8/02 , C22C38/60 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/30 , C22C38/32 , C22C38/38 , C22C38/00 , C22C38/06 , C22C38/02 , C21D9/46 , C21D6/00
CPC分类号： C21D8/0268 , C21D6/002 , C21D6/005 , C21D6/007 , C21D6/008 , C21D8/0205 , C21D8/0236 , C21D8/0242 , C21D8/0273 , C21D9/46 , C21D2201/02 , C21D2211/001 , C21D2211/008 , C22C38/001 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/30 , C22C38/32 , C22C38/38 , C22C38/60
摘要： The invention relates to a method for producing a flat steel product made of a medium manganese steel having a TRIP/TWIP effect. The aim of the invention is to achieve an improvement in the yield strength when a sufficient residual deformability of the produced flat steel product is obtained. This aim is achieved by the following steps: cold rolling a hot or cold strip, annealing the cold-rolled hot or cold strip at 500 to 840° C. for 1 minute to 24 hours, temper rolling or finishing the annealed hot or cold strip to form a flat steel product having a degree of deformability between 0.3% and 60%. The invention further relates to a flat steel product produced according to said method and to a use thereof.
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16.发明申请公开(公告)号：US20180363080A1
公开(公告)日：2018-12-20
申请号：US15781704
申请日：2016-09-29
申请人： HITACHI METALS, LTD.
发明人： Shiho FUKUMOTO
CPC分类号： C21D8/005 , C21D6/002 , C21D6/005 , C21D6/007 , C21D6/008 , C21D6/02 , C21D9/22 , C21D9/24 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/24 , C22C38/30
摘要： Provided are a high-speed tool steel having excellent hot workability, and excellent damage resistance when made into various tools; a material for tools, and a method for producing the same. The high-speed tool steel contains, in mass %, 0.9-1.2% of C, 0.1-1.0% of Si, 1.0% or less of Mn, 3.0-5.0% of Cr, 2.1-3.5% of W, 9.0-10.0% of Mo, 0.9-1.2% of V, 5.0-10.0% of Co, 0.020% or less of N, and the remainder being Fe and impurities, wherein an M value calculated by a formula satisfies −1.5≤M value≤1.5. Formula: M value=−9.500+9.334[% C]−0.275[% Si]−0.566[% W]−0.404[% Mo]+3.980[% V]+0.166[% Co], where the characters in brackets [ ] indicate the contained amounts (mass %) of the respective elements. The present invention also pertains to: a material for tools, which is obtained by using the high-speed tool steel; and a method for producing the material for tools.
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公开(公告)号：US10014099B2
公开(公告)日：2018-07-03
申请号：US15519410
申请日：2016-07-20
发明人： Zhi'an Chen , E. Niu , Wei Zhu , Fenghua Chen , Yeqing He , Xiaolei Rao , Boping Hu , Haojie Wang
IPC分类号： C22C38/10 , H01F1/053 , H01F41/02 , C22C38/16 , C22C38/06 , C22C38/00 , C23C10/30 , C21D9/00 , C21D6/00 , H05B6/80
CPC分类号： H01F7/02 , C21D6/007 , C21D9/0068 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , C23C10/30 , C23C10/60 , C23C24/08 , H01F1/053 , H01F1/0577 , H01F41/0293 , H05B6/80 , H05B6/806
摘要： The present invention discloses a rare earth permanent magnet and a method for preparing same. The material of the rare earth permanent magnet has a heavy rare earth element volume diffusion phenomenon at a depth of 5 μm to 100 μm from the surface of the magnet to the interior of the magnet along the magnetic field orientation direction, thereby forming a volume diffusion layer region; the volume diffusion layer region is divided into magnet units having a volume of 10*100*5 μm, and the concentration difference of the heavy rare earth elements of the magnet units at different positions in the volume diffusion layer is below 0.5 at %. The present invention provides a sintered NdFeB magnet of high intrinsic coercive force Hcj on the premise of not influencing the remanence Br and the maximum magnetic energy product (BH)max of products. In the method for preparing the rare earth permanent magnet, microwave heat treatment is performed on a blank magnet coated with heavy rare earth source slurry in a vacuum condition. This method can effectively improve the heating efficiency, reduce the heat treatment time, lower the energy consumption, and reduce the production cost of the magnet.
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公开(公告)号：US20170356070A1
公开(公告)日：2017-12-14
申请号：US15599497
申请日：2017-05-19
发明人： Takeo MIYAMURA , Shigenobu NAMBA , Zhuyao CHEN
CPC分类号： C22C38/105 , C21D1/18 , C21D6/004 , C21D6/007 , C21D6/02 , C21D2211/008 , C22C38/001 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/44 , C22C38/50 , C22C38/52
摘要： Disclosed is a mar aging steel containing, in combination in mass percent, C in a content from greater than 0% to 0.02%, Mn in a content from greater than 0% to 0.3%, Si in a content from greater than 0% to 0.3%, Ni in a content of 10% to 13%, Mo in a content of 0.5% to 3.5%, Co in a content of 9% to 12%, Cr in a content of 1.5% to 4.5%, Ti in a content of 1.5% to 4.5%, and Al in a content of 0.01% to 0.2%, where the total content of Mo and Ti is 5.0 mass percent or less, and the ratio ([Mo]/[Ti]) of the Mo content [Mo] to the Ti content [Ti] is 1.0 or less, with the remainder consisting of iron and inevitable impurities.
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19.发明申请公开(公告)号：US20170337941A1
公开(公告)日：2017-11-23
申请号：US15672857
申请日：2017-08-09
发明人： RONGFU XIAO , SHIHAI HE , DANIELE MAURI , MING MAO , SHAOPING LI
CPC分类号： G11B5/3912 , C21D6/001 , C21D6/007 , C21D9/0068 , G11B5/11 , G11B5/112 , G11B5/3163 , G11B5/3909 , G11B5/3932 , G11B5/3948 , G11B5/397 , G11B5/4886 , G11B2005/3996
摘要： A method and system provide a magnetic transducer having an air-bearing surface (ABS). The method includes providing a first shield, a first read sensor, an antiferromagnetically coupled (AFC) shield that includes an antiferromagnet, a second read sensor and a second shield. The read sensors are between the first and second shields. The AFC shield is between the read sensors. An optional anneal for the first shield is in a magnetic field at a first angle from the ABS. Anneals for the first and second read sensors are in magnetic fields in desired first and second read sensor bias directions. The AFC shield anneal is in a magnetic field at a third angle from the ABS. The second shield anneal is in a magnetic field at a fifth angle from the ABS. The fifth angle is selected based on a thickness and a desired AFC shield bias direction for the antiferromagnet.
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公开(公告)号：US09754613B2
公开(公告)日：2017-09-05
申请号：US15219474
申请日：2016-07-26
发明人： Rongfu Xiao , Shihai He , Daniele Mauri , Ming Mao , Shaoping Li
CPC分类号： G11B5/3912 , C21D6/001 , C21D6/007 , C21D9/0068 , G11B5/11 , G11B5/112 , G11B5/3163 , G11B5/3909 , G11B5/3932 , G11B5/3948 , G11B5/397 , G11B5/4886 , G11B2005/3996
摘要： A method and system provide a magnetic transducer having an air-bearing surface (ABS). The method includes providing a first shield, a first read sensor, an antiferromagnetically coupled (AFC) shield that includes an antiferromagnet, a second read sensor and a second shield. The read sensors are between the first and second shields. The AFC shield is between the read sensors. An optional anneal for the first shield is in a magnetic field at a first angle from the ABS. Anneals for the first and second read sensors are in magnetic fields in desired first and second read sensor bias directions. The AFC shield anneal is in a magnetic field at a third angle from the ABS. The second shield anneal is in a magnetic field at a fifth angle from the ABS. The fifth angle is selected based on a thickness and a desired AFC shield bias direction for the antiferromagnet.
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