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公开(公告)号：US11495378B2
公开(公告)日：2022-11-08
申请号：US16966268
申请日：2019-01-31
发明人： Hirotaka Inoue , Seiji Okabe , Takeshi Omura
IPC分类号： H01F7/06 , H01F1/16 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/44 , H01F27/245 , H01F41/02
摘要： A grain-oriented electrical steel sheet for a stacked transformer core. The steel sheet having a sheet thickness t, where t and an iron loss deterioration ratio obtained by subjecting the steel sheet under elliptic magnetization satisfy the following relations: (i) when t≤0.20 mm, the iron loss deterioration ratio is 85% or less; (ii) when 0.20 mm
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公开(公告)号：US20170263357A1
公开(公告)日：2017-09-14
申请号：US15606074
申请日：2017-05-26
发明人： Kunihiro Senda , Hirotaka Inoue , Seiji Okabe
IPC分类号： H01F1/147 , C25F3/14 , C22C38/00 , C22C38/60 , H01F1/16 , C22C38/02 , C25F3/06 , C22C38/06 , C22C38/16 , C21D8/12 , C21D1/26 , C25F1/06 , B21B3/02 , C22C38/04
CPC分类号： H01F1/14775 , B21B3/02 , B21B2001/221 , C21D1/26 , C21D8/12 , C21D8/1233 , C21D8/1244 , C21D8/1283 , C21D2201/05 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C38/60 , C25F1/06 , C25F3/06 , C25F3/14 , H01F1/16 , Y10T428/24545
摘要： A method of manufacturing a grain oriented electrical steel sheet includes subjecting a steel slab to a rolling process including cold rolling to obtain a steel sheet with a final sheet thickness, the steel slab containing by mass % C: 0.01% to 0.20%, Si: 2.0% to 5.0%, Mn: 0.03% to 0.20%, sol. Al: 0.010% to 0.05%, N: 0.0010% to 0.020%, at least one element selected from S and Se in a total of 0.005% to 0.040%, and the balance including Fe and incidental impurities; forming, by a chemical process, a linear groove extending in a direction forming an angle of 45° or less with a direction orthogonal to a rolling direction of the steel sheet; subjecting the steel sheet to decarburization annealing; applying an annealing separator thereon mainly composed of MgO; and subjecting the steel sheet to final annealing to manufacture a grain oriented electrical steel sheet.
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公开(公告)号：US20160333435A1
公开(公告)日：2016-11-17
申请号：US15112476
申请日：2015-01-08
发明人： Hirotaka Inoue , Shigehiro Takajo , Seiji Okabe
IPC分类号： C21D8/12 , H01F1/16 , B23K26/352 , B23K15/00 , B23K26/00
摘要： A magnetic domain refining treatment is performed by dividing a surface of a steel sheet into a plurality of regions in a widthwise direction, disposing a laser irradiation apparatus or an electron beam irradiation apparatus in each of the regions, and forming beam-irradiated regions through beam irradiation, wherein beams are irradiated so that a nature of a juncture between beam-irradiated regions satisfies 0≦α≦0.3×a and −1.2×a+0.02×w−0.5×α−6.5≦β≦−0.13×a−200×(1/w)+5.4 when TD spacing β at the juncture between the beam-irradiated regions is −3 to 0 mm, whereby a grain oriented electrical steel sheet having an excellent iron loss property is produced in a good productivity.
摘要翻译： 通过将钢板的表面沿宽度方向分割成多个区域，在各区域内配置激光照射装置或电子束照射装置，通过光束形成光束照射区域，进行磁畴精制处理 照射，其中照射光束，使得光束照射区域之间的接合的性质满足0≤α≤0.3×a和-1.2×a + 0.02×w-0.5×α-6.5≤β≤-0.13×a-200 ×（1 / w）+5.4，在射线照射区域之间的接合部处的TD间隔β为-3〜0mm的情况下，以良好的生产率制造出具有优异的铁损特性的晶粒取向电工钢板。
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4.发明申请GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR IMPROVING IRON LOSS PROPERTIES THEREOF 审中-公开面向导电的电工钢板及其改善铁损的方法公开(公告)号：US20150132547A1
公开(公告)日：2015-05-14
申请号：US14368975
申请日：2012-12-27
IPC分类号： H01F1/18 , C21D6/00 , C23F17/00 , C21D8/12 , C22C38/00 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/02 , H01F41/02 , C22C38/60
CPC分类号： H01F1/18 , C21D1/38 , C21D6/001 , C21D6/005 , C21D6/008 , C21D8/12 , C21D8/1255 , C21D8/1272 , C21D8/1283 , C21D8/1294 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/60 , C23C8/50 , C23C8/80 , C23C22/74 , C23F17/00 , H01F41/02 , Y10T428/24851
摘要： A grain-oriented electrical steel sheet, on which magnetic domain refining treatment by strain application has been performed, has an insulating coating with excellent insulation properties and corrosion resistance. The grain-oriented electrical steel sheet is obtained by irradiating a steel sheet with a high-energy beam to apply, to the steel sheet, linear strain extending in a direction that intersects a rolling direction of the steel sheet, and then re-forming an insulating coating on the steel sheet, in which in an irradiation mark region due to the high-energy beam, a ratio of an area containing defects on the insulating coating is 40% or less, a maximum width of the irradiation mark region in the rolling direction is 250 μm or less, and a thickness of the insulating coating is 0.3 μm or more and 2.0 μm or less.
摘要翻译： 已经通过应变施加进行磁畴精制处理的晶粒取向电工钢板具有绝缘性和耐腐蚀性优异的绝缘涂层。 晶粒取向电工钢板是通过用高能束照射钢板而获得的，以向钢板施加沿与钢板的轧制方向相交的方向延伸的线性应变，然后重新形成 绝缘涂层在钢板上，其中在由高能束引起的照射标记区域中，绝缘涂层上含有缺陷的区域的比例为40％以下，轧制中的照射标记区域的最大宽度 方向为250μm以下，绝缘层的厚度为0.3μm以上且2.0μm以下。
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公开(公告)号：US11961659B2
公开(公告)日：2024-04-16
申请号：US17042182
申请日：2019-03-29
发明人： Takeshi Omura , Hirotaka Inoue , Seiji Okabe
IPC分类号： H01F27/24 , H01F1/16 , H01F3/02 , H01F27/245 , H01F41/02
CPC分类号： H01F41/02 , H01F1/16 , H01F27/245 , H01F3/02
摘要： Vibration of an iron core is reduced to reduce transformer noise. An iron core for a transformer comprises a plurality of grain-oriented electrical steel sheets stacked together, wherein at least one of the plurality of grain-oriented electrical steel sheets: (1) has a region in which closure domains are formed in a direction crossing a rolling direction and a region in which no closure domains are formed; and (2) has an area ratio R of 0.10% to 30%, the area ratio R being an area ratio, to the whole grain-oriented electrical steel sheet, of a region in which a shrinkage amount at a maximum displacement point when excited in the rolling direction at a maximum magnetic flux density of 1.7 T and a frequency of 50 Hz is at least 2×10−7 less than a shrinkage amount in the region in which no closure domains are formed.
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公开(公告)号：US20220275487A1
公开(公告)日：2022-09-01
申请号：US17629863
申请日：2020-07-03
发明人： Yoshihisa Ichihara , Takeshi Omura , Hirotaka Inoue , Shigehiro Takajo , Masanori Odachi , Kunihiro Senda
摘要： A grain-oriented electrical steel sheet having linear grooves formed cyclically in a rolling direction of the grain-oriented electrical steel sheet such that a longitudinal direction of the linear grooves intersects the rolling direction, in which each of the linear grooves has a discontinuous portion of center lines where center lines of the groove are shifted in a groove width direction, and when a width of the linear groove is defined as a and a distance in the groove width direction between the center lines in the discontinuous portion of center lines is defined as b, a and b satisfy relational expression (1) below. 0.05≤b/a≤0.95 (1)
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公开(公告)号：US11174526B2
公开(公告)日：2021-11-16
申请号：US16812365
申请日：2020-03-09
IPC分类号： C21D9/46 , C21D8/12 , C23C8/26 , C22C38/60 , H01F1/16 , C22C38/00 , C23C8/50 , C22C38/16 , C23C8/02 , C22C38/08 , C22C38/14 , C22C38/12 , C22C38/18 , C23C8/80 , C22C38/02 , C22C38/04 , C22C38/06
摘要： A grain-oriented electrical steel sheet that includes a base coating with a high TiN ratio advantageous for the application of tension to the steel sheet and has excellent magnetic property is provided. The grain-oriented electrical steel sheet includes: a base coating having a peak value PTiN of TiN in the form of osbornite, observed in a range of 42°
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公开(公告)号：US10395806B2
公开(公告)日：2019-08-27
申请号：US14369237
申请日：2012-12-27
IPC分类号： H01F1/147 , C21D8/12 , C22C38/60 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/16 , H01F1/18 , H01F41/00 , C21D1/38 , C23C8/50 , C23C8/80 , C23C8/26
摘要： A grain-oriented electrical steel sheet, on which magnetic domain refining treatment by strain application has been performed, has an insulating coating with excellent insulation properties and corrosion resistance. In a grain-oriented electrical steel sheet, linear strain having been applied thereto by irradiation with a high-energy beam, the linear strain extending in a direction that intersects a rolling direction of the steel sheet, an area ratio of irradiation marks within an irradiation region of the high-energy beam is 2% or more and 20% or less, an area ratio of protrusions with a diameter of 1.5 μm or more within a surrounding portion of the irradiation mark is 60% or less, and an area ratio of exposed portions of steel substrate in the irradiation mark is 90% or less.
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公开(公告)号：US20170121785A1
公开(公告)日：2017-05-04
申请号：US15128451
申请日：2015-03-26
IPC分类号： C21D9/46 , C21D1/26 , C23C8/26 , C23C8/50 , C22C38/60 , C22C38/40 , C22C38/34 , C22C38/16 , C22C38/12 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , H01F1/16 , C21D6/00
CPC分类号： C21D9/46 , C21D1/26 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/1255 , C21D8/1272 , C21D2201/05 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/34 , C22C38/40 , C22C38/60 , C23C8/26 , C23C8/50 , H01F1/16
摘要： A primary recrystallization annealed sheet obtainable after an intermediate step of nitriding treatment in a grain-oriented electrical steel sheet production process using, as a material, a steel slab contains, in mass %, 0.001% to 0.10% of C, 1.0% to 5.0% of Si, 0.01% to 0.5% of Mn, 0.002% to 0.040% of one or two selected from S and Se, 0.001% to 0.050% of sol.Al, and 0.0010% to 0.020% of N, the remainder being Fe and incidental impurities. A nitrogen increase ΔN due to the nitriding treatment is 1000 ppm or less, and N intensity according to X-ray fluorescence at the steel sheet surface is 0.59 or greater. As a result, uniform sheet thickness direction dispersion of nitrides as inhibitors can be achieved with industrial reliability in a grain-oriented electrical steel sheet production process including nitriding, thereby enabling reliable production of grain-oriented electrical steel sheets having good magnetic properties.
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10.发明申请公开(公告)号：US20140360629A1
公开(公告)日：2014-12-11
申请号：US14369237
申请日：2012-12-27
CPC分类号： H01F1/14775 , C21D1/38 , C21D8/12 , C21D8/1255 , C21D8/1277 , C21D8/1283 , C21D8/1294 , C21D9/46 , C21D2201/05 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/16 , C22C38/60 , C23C8/26 , C23C8/50 , C23C8/80 , H01F1/14783 , H01F1/18 , H01F41/005
摘要： A grain-oriented electrical steel sheet, on which magnetic domain refining treatment by strain application has been performed, has an insulating coating with excellent insulation properties and corrosion resistance. In a grain-oriented electrical steel sheet, linear strain having been applied thereto by irradiation with a high-energy beam, the linear strain extending in a direction that intersects a rolling direction of the steel sheet, an area ratio of irradiation marks within an irradiation region of the high-energy beam is 2% or more and 20% or less, an area ratio of protrusions with a diameter of 1.5 μm or more within a surrounding portion of the irradiation mark is 60% or less, and an area ratio of exposed portions of steel substrate in the irradiation mark is 90% or less.
摘要翻译： 已经通过应变施加进行磁畴精制处理的晶粒取向电工钢板具有绝缘性和耐腐蚀性优异的绝缘涂层。 在晶粒取向电工钢板中，通过用高能束照射施加的线性应变，沿与钢板的轧制方向相交的方向延伸的线状应变，照射标记的面积比 高能束的区域为2％以上且20％以下，照射标记的周围部的直径为1.5μm以上的突起的面积比为60％以下，面积比为 照射标记中的钢基材的露出部分为90％以下。
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