公开(公告)号：US09183984B2

公开(公告)日：2015-11-10

申请号：US13814561

申请日：2011-08-04

Applicant: Yukihiro Shingaki ,  Noriko Makiishi ,  Takeshi Imamura

Inventor： Yukihiro Shingaki ,  Noriko Makiishi ,  Takeshi Imamura

IPC: H01F41/00 ,  H01F1/01 ,  C21D8/12 ,  C22C38/02 ,  C22C38/04 ,  C23C2/24 ,  H01F1/16 ,  C23C26/00 ,  C21D9/46

CPC classification number: H01F41/00 ,  C21D8/12 ,  C21D8/1216 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C23C2/24 ,  C23C26/00 ,  H01F1/01 ,  H01F1/16

Abstract: A grain oriented electrical steel sheet has a total length of cracks in a film on a steel sheet surface, of 20 μm or less per 10000 μm2 of the film, wherein magnetic domain refinement interval in a rolling direction of the steel sheet, provided in magnetic domain refinement through substantially linear introduction of thermal strain from one side of the steel sheet corresponding to a winding outer peripheral side of a coiled steel sheet at a stage of final annealing in a direction intersecting the rolling direction; and deflection of 3 mm or less per unit length: 500 mm in the rolling direction of the steel sheet.

Abstract translation: 一种晶粒取向电工钢板在钢板表面上的膜中的裂纹总长度为每10000μm2的膜厚为20μm以下，其特征在于，所述钢板的轧制方向的磁畴细化间隔设置在磁性 通过在与轧制方向交叉的方向进行最终退火阶段，对应于卷取钢板的卷取外周侧的钢板的一侧进行大致线性引入热应变的区域精制; 并且每单位长度3mm以下的挠曲在钢板的轧制方向上为500mm。

公开(公告)号：US20130213525A1

公开(公告)日：2013-08-22

申请号：US13814561

申请日：2011-08-04

Applicant: Yukihiro Shingaki ,  Noriko Makiishi ,  Takeshi Imamura

Inventor： Yukihiro Shingaki ,  Noriko Makiishi ,  Takeshi Imamura

IPC: H01F41/00 ,  H01F1/01

CPC classification number: H01F41/00 ,  C21D8/12 ,  C21D8/1216 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C23C2/24 ,  C23C26/00 ,  H01F1/01 ,  H01F1/16

Abstract: A grain oriented electrical steel sheet has a total length of cracks in a film on a steel sheet surface, of 20 μm or less per 10000 μm2 of the film, wherein magnetic domain refinement interval in a rolling direction of the steel sheet, provided in magnetic domain refinement through substantially linear introduction of thermal strain from one side of the steel sheet corresponding to a winding outer peripheral side of a coiled steel sheet at a stage of final annealing in a direction intersecting the rolling direction; and deflection of 3 mm or less per unit length: 500 mm in the rolling direction of the steel sheet.

Abstract translation: 一种晶粒取向电工钢板在钢板表面上的膜中的裂纹总长度为每10000mum2的膜厚为20μm以下，其特征在于，所述钢板的轧制方向的磁畴细化间隔设置在磁性 通过在与轧制方向交叉的方向进行最终退火阶段，对应于卷取钢板的卷取外周侧的钢板的一侧进行大致线性引入热应变的区域精制; 并且每单位长度3mm以下的挠曲在钢板的轧制方向上为500mm。

公开(公告)号：US20130228251A1

公开(公告)日：2013-09-05

申请号：US13814054

申请日：2011-08-04

Applicant: Yukihiro Shingaki ,  Noriko Makiishi ,  Makoto Watanabe

Inventor： Yukihiro Shingaki ,  Noriko Makiishi ,  Makoto Watanabe

IPC: H01F1/01

CPC classification number: H01F1/01 ,  B21B3/02 ,  C21D8/12 ,  C21D8/1244 ,  C21D8/1255 ,  C21D9/46 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/18 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/60 ,  C23C26/00 ,  C23C30/00 ,  H01F1/14775 ,  H01F1/16

Abstract: A grain oriented electrical steel sheet includes forsterite film on a surface of base steel sheet and a selenium-concentrated portion in at least one of the forsterite film and an interface between the forsterite film and the base steel sheet by a presence ratio expressed as area-occupying ratio of the Se-concentrated portion, of at least 2%, per 10000 μm2 of the surface of the base steel sheet, which has been subjected to magnetic domain refinement treatment by electron beam irradiation.

Abstract translation: 晶粒取向电工钢板包括基体钢板表面的镁橄榄石膜和至少一种镁橄榄石膜中的硒浓缩部分和镁橄榄石膜和基体钢板之间的界面，通过表面积 - 已经通过电子束照射进行了磁畴细化处理的基础钢板表面的每10000mum2的Se浓缩部分的占有率至少为2％。

公开(公告)号：US20120131982A1

公开(公告)日：2012-05-31

申请号：US13388082

申请日：2010-07-30

Applicant: Takeshi Imamura ,  Yukihiro Shingaki ,  Mineo Muraki

Inventor： Takeshi Imamura ,  Yukihiro Shingaki ,  Mineo Muraki

IPC: B21D31/00 ,  C22C38/04 ,  C22C38/16 ,  C22C38/12 ,  C22C38/34 ,  C22C38/08 ,  C22C38/60 ,  C22C38/02 ,  C22C38/18

CPC classification number: C22C38/02 ,  C21D8/12 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/20 ,  C22C38/34 ,  H01F1/16

Abstract: An electrical steel sheet contains, as components, by mass %, 0.005% or less of C, 1.0% to 8.0% of Si, and 0.005% to 1.0% of Mn; one or more selected from Nb, Ta, V, and Zr such that a total content thereof is 10 to 50 ppm; and the balance being Fe and unavoidable impurities, wherein at least 10% of the content of Nb, Ta, V, and Zr is in the form of precipitates; the precipitates have an average diameter (equivalent circle diameter) of 0.02 to 3 μm; and secondary recrystallized grains of the steel sheet have an average grain size of 5 mm or more.

Abstract translation: 电动钢板以质量％计含有C：0.005％以下，Si：1.0〜8.0％，Mn：0.005〜1.0％ 选自Nb，Ta，V和Zr中的一种或多种，​​使得其总含量为10〜50ppm; 其余为Fe和不可避免的杂质，其中Nb，Ta，V和Zr的含量的至少10％为沉淀物; 沉淀物的平均直径（当量圆直径）为0.02〜3μm; 钢板的二次再结晶晶粒的平均粒径为5mm以上。

公开(公告)号：US20150007908A1

公开(公告)日：2015-01-08

申请号：US14235935

申请日：2012-08-15

Applicant: Makoto Watanabe ,  Yukihiro Shingaki ,  Toshito Takamiya ,  Tomoyuki Okubo ,  Kunihiro Senda

Inventor： Makoto Watanabe ,  Yukihiro Shingaki ,  Toshito Takamiya ,  Tomoyuki Okubo ,  Kunihiro Senda

IPC: C21D8/12 ,  C22C38/00 ,  H01F1/147 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60 ,  H01F41/00 ,  C22C38/02

CPC classification number: C21D8/1272 ,  C21D8/12 ,  C21D8/1244 ,  C21D8/1283 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  C22C38/60 ,  C23C22/33 ,  C23C22/74 ,  H01F1/14775 ,  H01F1/16 ,  H01F41/00

Abstract: In a method of producing a grain-oriented electrical steel sheet by hot-rolling a steel slab of a chemical composition containing C: 0.001˜0.10%, Si: 1.0˜5.0%, Mn: 0.01˜1.0%, at least one of S and Se: 0.01˜0.05% in total, sol. Al: 0.003˜0.050%, N: 0.001˜0.020% by mass, subjecting to cold rolling, a primary recrystallization annealing, application of an annealing separator mainly composed of MgO and a finish annealing, a temperature rising rate S1 between 500˜600° C. in the primary recrystallization annealing is made to not less than 100° C./s and a temperature rising rate S2 between 600˜700° C. is made to 30° C./s˜0.6×S1° C./s, while a total content W (mol %) of an element having an ionic radius of 0.6˜1.3 Å and an attracting force between the ion and oxygen of not more than 0.7 Å−2 included in the annealing separator to MgO is adjusted to satisfy 0.01S2-5.5≦Ln (W)≦0.01S2−4.3 to produce a grain-oriented electrical steel sheet having excellent iron loss properties and coating properties.

Abstract translation: 在通过热轧含有C：0.001〜0.10％，Si：1.0〜5.0％，Mn：0.01〜1.0％的化学成分的钢坯的方法中，S 和Se：0.01〜0.05％，溶胶。 Al：0.003〜0.050％，N：0.001〜0.020质量％，进行冷轧，一次再结晶退火，主要由MgO构成的退火分离装置和最终退火处理，升温速度S1为500〜600度 在一次再结晶退火中，使其在不低于100℃/秒之间，并将600-700℃之间的升温速度S2设定为30℃/秒〜0.6×S1℃/ ，而退火分离器中包含的离子半径为0.6〜0.3的元素和离子与氧之间的吸引力为0.7at以下的总含量W（mol％）被调整为满足 0.01S2-5.5＆nlE; Ln（W）＆nlE; 0.01S2-4.3，得到铁损特性和涂布性能优异的晶粒取向电工钢板。

公开(公告)号：US20090101248A1

公开(公告)日：2009-04-23

申请号：US11663751

申请日：2005-11-28

Applicant: Yukihiro Shingaki ,  Minoru Takashima ,  Tadashi Nakanishi ,  Takeshi Murai

Inventor： Yukihiro Shingaki ,  Minoru Takashima ,  Tadashi Nakanishi ,  Takeshi Murai

IPC: C21D8/02 ,  C22C38/00 ,  C22C38/08 ,  C22C38/22

CPC classification number: C21C7/0087 ,  C21C7/076 ,  C21C7/10 ,  C21D8/12 ,  C22C38/02 ,  C22C38/04 ,  H01F1/14775 ,  Y02P10/242

Abstract: The present invention provides a grain-oriented electrical steel sheet produced by a method for promoting secondary recrystallization without an inhibitor, the grain-oriented electrical steel sheet including 2.0% or more and 4.5% or less of Si and 0.01% or more and 0.5% or less of Mn on a mass % basis, wherein the number of oxide particles having a diameter of 1 to 3 μm among that (oxide particles) of containing Ca and/or Mg is 400 or less per unit area (1 cm2) in a transverse cross-section perpendicular to a rolling direction. Therefore, the grain-oriented electrical steel sheet has excellent stable magnetic properties throughout the length of a coil.

Abstract translation: 本发明提供一种通过不用抑制剂促进二次再结晶的方法制造的方向性电磁钢板，所述方向性电磁钢板包括2.0％以上且4.5％以下的Si，0.01％以上且0.5％以下， 以下，以质量％计含有Mn以下，其中，含有Ca和/或Mg的（氧化物粒子）中的直径为1〜3μm的氧化物粒子的数量为单位面积（1cm 2）为400以下 垂直于轧制方向的横截面。 因此，晶粒取向电工钢板在整个线圈长度上具有优异的稳定的磁性能。

公开(公告)号：US20140338794A1

公开(公告)日：2014-11-20

申请号：US14344805

申请日：2012-09-14

Applicant: Yukihiro Shingaki ,  Makoto Watanabe ,  Kunihiro Senda

Inventor： Yukihiro Shingaki ,  Makoto Watanabe ,  Kunihiro Senda

IPC: C21D8/12

CPC classification number: C21D8/1261 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1266 ,  C21D8/1272 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/34 ,  C22C38/60 ,  H01F1/16

Abstract: In the production of a grain-oriented electrical steel sheet by hot rolling a steel slab comprising C: 0.001˜0.10 mass %, Si: 1.0˜5.0 mass %, Mn: 0.01˜0.5 mass %, sol. Al: 0.003˜0.050 mass %, N: 0.0010˜0.020 mass %, one or two selected from S and Se: 0.005˜0.040 mass % in total, cold rolling, primary recrystallization annealing, and final annealing, a heating rate S1 between a temperature T1 (° C.): 500+2×(NB−NA) and a temperature T2 (° C.): 600+2×(NB−NA) in a heating process of the primary recrystallization annealing is set to not less than 80° C./sec, and an average heating rate S2 from the temperature T2 to 750° C. is set to 0.1˜0.7 times of S1, whereby a grain-oriented electrical steel sheet having a low iron loss over a full length of a product coil is obtained.

Abstract translation: 在通过热轧含有C：0.001〜0.10质量％，Si：1.0〜5.0质量％，Mn：0.01〜0.5质量％的钢板的钢板的制造中， Al：0.003〜0.050质量％，N：0.0010〜0.020质量％，从S和Se中选择的一个或两个：总计0.005〜0.40质量％，冷轧，一次再结晶退火和最终退火，加热速度S1 一次再结晶退火的加热工序中的温度T1（℃）：500 + 2×（NB-NA）和温度T2（℃）：600 + 2×（NB-NA） 超过80℃/秒，从温度T2到750℃的平均加热速度S2设定为S1的0.1〜0.7倍，由此得到全长铁损低的方向性电磁钢板 的产品线圈。

公开(公告)号：US20140202599A1

公开(公告)日：2014-07-24

申请号：US14235652

申请日：2012-08-08

Applicant: Makoto Watanabe ,  Yukihiro Shingaki ,  Toshito Takamiya ,  Tomoyuki Okubo

Inventor： Makoto Watanabe ,  Yukihiro Shingaki ,  Toshito Takamiya ,  Tomoyuki Okubo

IPC: H01F41/04 ,  C21D6/00

CPC classification number: H01F41/04 ,  C21D6/00 ,  C21D8/12 ,  C21D8/1233 ,  C21D8/1266 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60 ,  H01F1/16

Abstract: In a method of producing a grain-oriented electrical steel sheet by subjecting a coil for grain-oriented electrical steel sheet after cold rolling to a primary recrystallization annealing, applying an annealing separator thereon, and conducting final annealing, rapid heating is conducted at a rate of not less than 80° C./sec from 500° C. to 700° C. in the course of heating for the primary recrystallization annealing, and a temperature keeping treatment is conducted for 2 to 100 hours from 700° C. to 1000° C. in the course of heating for the final annealing, and further, the final annealing is preferably conducted by laying a thermal insulation material on an upper surface of a coil supporting stand in an annealing furnace used for the final annealing concentrically from the outer periphery of the coil supporting stand and over an area of not less than 20% of the radius of the coil supporting stand.

Abstract translation: 在通过使冷轧后的方向性电磁钢板的线圈进行一次再结晶退火，在其上涂布退火分离剂并进行最终退火的方法来制造方向性电磁钢板的方法中，以一定速度进行快速加热 在一次再结晶退火的加热过程中从500℃至700℃不低于80℃/秒，并且从700℃至1000℃进行2至100小时的保温处理 在进行最终退火的加热过程中，最终退火优选通过在用于最终退火的退火炉中的线圈支撑架的上表面上放置绝热材料，同时从外部 线圈支撑架的周边，并且在不小于线圈支撑架的半径的20％的面积上。

公开(公告)号：US08177920B2

公开(公告)日：2012-05-15

申请号：US11663751

申请日：2005-11-28

Applicant: Yukihiro Shingaki ,  Minoru Takashima ,  Tadashi Nakanishi ,  Takeshi Murai

Inventor： Yukihiro Shingaki ,  Minoru Takashima ,  Tadashi Nakanishi ,  Takeshi Murai

IPC: C21D8/12 ,  C22C38/02 ,  H01F1/16 ,  H01F27/245

CPC classification number: C21C7/0087 ,  C21C7/076 ,  C21C7/10 ,  C21D8/12 ,  C22C38/02 ,  C22C38/04 ,  H01F1/14775 ,  Y02P10/242

Abstract: The present invention provides a grain-oriented electrical steel sheet produced by a method for promoting secondary recrystallization without an inhibitor, the grain-oriented electrical steel sheet including 2.0% or more and 4.5% or less of Si and 0.01% or more and 0.5% or less of Mn on a mass % basis, wherein the number of oxide particles having a diameter of 1 to 3 μm among that (oxide particles) of containing Ca and/or Mg is 400 or less per unit area (1 cm2) in a transverse cross-section perpendicular to a rolling direction. Therefore, the grain-oriented electrical steel sheet has excellent stable magnetic properties throughout the length of a coil.

Abstract translation: 本发明提供一种通过不用抑制剂促进二次再结晶的方法制造的方向性电磁钢板，所述方向性电磁钢板包括2.0％以上且4.5％以下的Si，0.01％以上且0.5％以下， 以含有Ca和/或Mg的（氧化物粒子）中的直径为1〜3μm的氧化物粒子的数量为单位面积（1cm 2）为400以下， 垂直于轧制方向的横截面。 因此，晶粒取向电工钢板在整个线圈长度上具有优异的稳定的磁性能。

公开(公告)号：US09640320B2

公开(公告)日：2017-05-02

申请号：US14235652

申请日：2012-08-08

Applicant: Makoto Watanabe ,  Yukihiro Shingaki ,  Toshito Takamiya ,  Tomoyuki Okubo

Inventor： Makoto Watanabe ,  Yukihiro Shingaki ,  Toshito Takamiya ,  Tomoyuki Okubo

IPC: H01F1/04 ,  C21D6/00 ,  C21D8/12 ,  C22C38/00 ,  H01F41/04 ,  C21D9/46 ,  H01F1/16 ,  C22C38/02 ,  C22C38/04 ,  C22C38/60

CPC classification number: H01F41/04 ,  C21D6/00 ,  C21D8/12 ,  C21D8/1233 ,  C21D8/1266 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60 ,  H01F1/16

Abstract: In a method of producing a grain-oriented electrical steel sheet by subjecting a coil for grain-oriented electrical steel sheet after cold rolling to a primary recrystallization annealing, applying an annealing separator thereon, and conducting final annealing, rapid heating is conducted at a rate of not less than 80° C./sec from 500° C. to 700° C. in the course of heating for the primary recrystallization annealing, and a temperature keeping treatment is conducted for 2 to 100 hours from 700° C. to 1000° C. in the course of heating for the final annealing, and further, the final annealing is preferably conducted by laying a thermal insulation material on an upper surface of a coil supporting stand in an annealing furnace used for the final annealing concentrically from the outer periphery of the coil supporting stand and over an area of not less than 20% of the radius of the coil supporting stand.