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1. 发明授权

US10214793B2 Method and device for nitriding grain-oriented electrical steel sheet 有权
公开(公告)号：US10214793B2
公开(公告)日：2019-02-26
申请号：US14764650
申请日：2014-02-18
申请人： JFE STEEL CORPORATION
发明人： Hiroshi Matsuda , Hideyuki Takahashi , Hiroi Yamaguchi , Yukihiro Shingaki , Yasuyuki Hayakawa , Takashi Terashima
IPC分类号： C23C8/50 , C21D8/12 , H01F1/16 , C21D6/00 , C21D9/46
摘要： Provided is a method for nitriding a grain-oriented electrical steel sheet which is very useful in obtaining excellent magnetic properties with no variation by immersing a strip in a molten salt bath after cold rolling and before secondary recrystallization annealing during a production process of a grain-oriented electrical steel sheet, to subject the strip to continuous nitriding to uniformly disperse inhibitor forming elements over the full length and full width of the strip.

2. 发明授权

US10031068B2 Steel sheet inspection device, steel sheet inspection method, and steel sheet manufacturing method 有权
公开(公告)号：US10031068B2
公开(公告)日：2018-07-24
申请号：US14425983
申请日：2013-09-25
申请人： JFE STEEL CORPORATION
发明人： Tomohiko Ito , Junichi Yotsuji , Shigehiro Takajo , Hiroi Yamaguchi , Kazuhiro Hanazawa , Yasunari Koga
IPC分类号： H01F1/16 , C21D8/12 , G01N21/21 , G01R33/032 , G01N21/86 , C22C38/00 , H01F41/02 , C21D11/00 , C21D1/38 , G01N27/82 , C21D1/34 , C21D9/46
摘要： A steel sheet inspection device includes: a magnetooptic element that is able to detect, as an optical property, a magnetic domain structure of a steel sheet to be inspected; a light source that irradiates the magnetooptic element with linearly polarized light; a detector that detects the linearly polarized light with a polarization plane rotated according to the magnetic domain structure of the steel sheet transferred to the magnetooptic element; and a drive mechanism that drives at least the magnetooptic element so as to contact and separate the steel sheet and the magnetooptic element with and from each other.

3. 发明申请

US20150132547A1 GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR IMPROVING IRON LOSS PROPERTIES THEREOF 审中-公开
标题翻译：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
申请人： JFE Steel Corporation
发明人： Hirotaka Inoue , Shigehiro Takajo , Hiroi Yamaguchi , Seiji Okabe , Kazuhiro Hanazawa
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。

4. 发明授权

US09646749B2 Grain-oriented electrical steel sheet 有权
公开(公告)号：US09646749B2
公开(公告)日：2017-05-09
申请号：US14368806
申请日：2012-12-27
申请人： JFE STEEL CORPORATION
发明人： Ryuichi Suehiro , Hiroi Yamaguchi , Seiji Okabe , Hirotaka Inoue , Shigehiro Takajo
IPC分类号： H01F1/16 , C21D8/12 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/60 , C21D1/38
CPC分类号： H01F1/16 , C21D1/38 , C21D8/12 , C21D8/1277 , C21D8/1294 , C21D2201/05 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/60
摘要： The present invention proposes a method that can reduce the noise generated by a transformer core and the like when formed by laminations of a grain-oriented electrical steel sheet in which core loss has been reduced by a magnetic domain refinement process. In this steel sheet, linear distortion extending with an orientation in which an angle formed with a direction perpendicular to the rolling direction of the steel sheet is an angle of 30° or less is periodic in the direction of rolling of the steel sheet, core loss (W17/50) is 0.720 W/kg or less, and magnetic flux density (B8) is 1.930 T. The volume of the closure domain arising in the distortion part is 1.00-3.00% of the total magnetic domain volume within the steel sheet.

5. 发明授权

US09304078B2 Electron gun abnormality detecting device and electron gun abnormality detecting method 有权
标题翻译：电子枪异常检测装置和电子枪异常检测方法
公开(公告)号：US09304078B2
公开(公告)日：2016-04-05
申请号：US14431221
申请日：2013-09-25
申请人： JFE STEEL CORPORATION
发明人： Tomohiko Ito , Junichi Yotsuji , Shigehiro Takajo , Hiroi Yamaguchi , Kazuhiro Hanazawa , Yasunari Koga
IPC分类号： G01J4/00 , G01N21/21 , G01R33/032 , H01J29/48
CPC分类号： G01N21/21 , G01N2201/062 , G01R33/032 , H01J29/48
摘要： An electron gun abnormality detecting device for detecting an abnormality in first and second electron guns of a magnetic domain refining device for an electrical steel sheet includes: a magnetooptic element configured to contact with and separate from an inspection region set to include a boundary between a magnetic domain discontinuity generated by irradiation of a surface of the electrical steel sheet with an electron beam by the first electron gun and a magnetic domain discontinuity generated by irradiation thereof with an electron beam by the second electron gun, and configured to detect a steel sheet magnetic domain structure in the inspection region as an optical property; a light source configured to irradiate the magnetooptic element with linearly polarized light; and a detector configured to detect polarized light rotated by the steel sheet magnetic domain structure transferred to the magnetooptic element.
摘要翻译：一种用于检测用于电工钢板的磁畴精炼装置的第一和第二电子枪的异常的电子枪异常检测装置包括：磁光元件，其被配置为与检查区域接触并分离，所述检查区域被设置为包括磁性通过第一电子枪用电子束照射电工钢板的表面产生的畴不连续性，以及通过用第二电子枪用电子束照射产生的磁畴不连续性，并且构造成检测钢板磁畴检查区域的结构为光学性质; 光源，被配置为用线性偏振光照射所述磁光元件; 以及检测器，被配置为检测由转移到磁光元件的钢板磁畴结构旋转的偏振光。

6. 发明申请

US20150010762A1 GRAIN-ORIENTED ELECTRICAL STEEL SHEET 有权
标题翻译：面向电磁钢板
公开(公告)号：US20150010762A1
公开(公告)日：2015-01-08
申请号：US14368654
申请日：2012-12-19
申请人： JFE STEEL CORPORATION
发明人： Hiroi Yamaguchi , Seiji Okabe , Hirotaka Inoue , Ryuichi Suehiro
IPC分类号： H01F1/16 , C21D8/12 , C22C38/00
CPC分类号： H01F1/16 , C21D6/008 , C21D8/12 , C21D8/1255 , C21D8/1266 , C21D8/1283 , C21D8/1288 , C21D8/1294 , C21D9/46 , C21D10/00 , C21D2201/05 , C21D2221/00 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/16 , C22C38/60 , C23C22/74 , H01F1/18
摘要： Provided is a grain-oriented electrical steel sheet, with reduced iron loss by magnetic domain refining treatment, exhibiting an excellent noise property and effectively reducing noise generated when stacked in an iron core of a transformer. In a grain-oriented electrical steel sheet including a forsterite film and a tension coating on both surfaces, magnetic domain refining treatment has been performed to apply linear thermal strain to the grain-oriented electrical steel sheet, the magnitude of deflection in the rolling direction of the steel sheet is 600 mm or more and 6000 mm or less as the curvature radius of the deflected surface with the surface having the strain applied thereto being the inner side, and the magnitude of deflection in the direction orthogonal to the rolling direction is 2000 mm or more as the curvature radius of the deflected surface with the surface having the strain applied thereto being the inner side.
摘要翻译：本发明提供一种通过磁畴精制处理减少铁损的晶粒取向电工钢板，具有优异的噪声特性，有效地降低堆叠在变压器的铁芯中时产生的噪音。在包含镁橄榄石膜和两面张力涂层的方向性电磁钢板中，已经对晶粒取向电工钢板进行线性热应变，对轧制方向的挠度大小进行了磁畴精制处理作为施加了应变的表面的偏转面的曲率半径为内侧，钢板为600mm以上且6000mm以下，并且与轧制方向正交的方向的偏转量为2000mm 或更多，因为施加有应变的表面的偏转表面的曲率半径是内侧。

7. 发明申请

US20140338792A1 GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF MANUFACTURING SAME 有权
标题翻译：面向电磁钢板及其制造方法
公开(公告)号：US20140338792A1
公开(公告)日：2014-11-20
申请号：US14368812
申请日：2012-12-28
申请人： JFE Steel Corporation
发明人： Shigehiro Takajo , Ryuichi Suehiro , Hiroi Yamaguchi
IPC分类号： H01F1/147 , C22C38/00 , C21D1/34
CPC分类号： H01F1/147 , C21D1/34 , C21D1/38 , C21D8/12 , C21D8/1294 , C21D2201/05 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/60 , H01F1/16
摘要： A grain-oriented electrical steel sheet allows for manufacture of a transformer that exhibits, when the steel sheet is applied to an iron core thereof, extremely low iron loss and extremely low noise properties, makes highly efficient use of energy, and can be used in various environments. The grain-oriented electrical steel sheet has a strain distribution in regions where closure domains are formed, when observed in a cross section in the rolling direction, with a maximum tensile strain in a sheet thickness direction being 0.45% or less, and with a maximum tensile strain t (%) and a maximum compressive strain c (%) in the rolling direction satisfying Expression (1): t+0.06≦t+c≦0.35 (1).
摘要翻译：晶粒取向电工钢板允许制造变压器，当将钢板应用于其铁芯时，具有极低的铁损和极低的噪音特性，能够高效地利用能量，并且可用于各种环境。当在轧制方向的横截面中观察时，晶粒取向电工钢板在形成闭合畴的区域中具有应变分布，板厚方向的最大拉伸应变为0.45％以下，最大值为满足式（1）的轧制方向的拉伸应变t（％）和最大压缩应变c（％）：t + 0.06＆nlE; t + c＆nlE; 0.35（1）。

8. 发明授权

US10062483B2 Grain-oriented electrical steel sheet and method for improving iron loss properties thereof 有权
公开(公告)号：US10062483B2
公开(公告)日：2018-08-28
申请号：US14368975
申请日：2012-12-27
申请人： JFE Steel Corporation
发明人： Hirotaka Inoue , Shigehiro Takajo , Hiroi Yamaguchi , Seiji Okabe , Kazuhiro Hanazawa
IPC分类号： H01F1/18 , C21D6/00 , C21D8/12 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/60 , C23F17/00 , H01F41/02 , C23C22/74 , C21D1/38 , C23C8/50 , C23C8/80
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.

9. 发明授权

US10011886B2 Grain-oriented electrical steel sheet and manufacturing method thereof 有权
公开(公告)号：US10011886B2
公开(公告)日：2018-07-03
申请号：US14347759
申请日：2012-09-28
申请人： JFE Steel Corporation
发明人： Shigehiro Takajo , Hiroi Yamaguchi , Takeshi Omura , Hirotaka Inoue , Seiji Okabe
IPC分类号： C21D8/12 , C22C38/04 , C22C38/60 , H01F1/16 , H01F1/18 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/08 , C23C30/00 , C21D1/38
CPC分类号： C21D8/1277 , C21D1/38 , C21D8/12 , C21D8/1283 , C21D2201/05 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/60 , C23C30/00 , H01F1/16 , H01F1/18
摘要： A grain-oriented electrical steel sheet to which electron beam irradiation is applied, has a film and a thickness of t (mm), wherein no rust is produced on a surface of the steel sheet after a humidity cabinet test lasting 48 hours at a temperature of 50° C. in an atmosphere of 98% humidity, and iron loss W17/50 after the electron beam irradiation is reduced by at least (−500 t2+200 t−6.5) % of the iron loss W17/50 before the electron beam irradiation and is (5 t2−2 t+1.065) W/kg or less.

10. 发明授权

US09984800B2 Grain-oriented electrical steel sheet and method of manufacturing same 有权
公开(公告)号：US09984800B2
公开(公告)日：2018-05-29
申请号：US14368812
申请日：2012-12-28
申请人： JFE Steel Corporation
发明人： Shigehiro Takajo , Ryuichi Suehiro , Hiroi Yamaguchi
IPC分类号： H01F1/147 , C21D8/12 , C22C38/00 , C22C38/60 , H01F1/16 , C22C38/02 , C22C38/04 , C21D1/38 , C21D1/34
CPC分类号： H01F1/147 , C21D1/34 , C21D1/38 , C21D8/12 , C21D8/1294 , C21D2201/05 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/60 , H01F1/16
摘要： A grain-oriented electrical steel sheet allows for manufacture of a transformer that exhibits, when the steel sheet is applied to an iron core thereof, extremely low iron loss and extremely low noise properties, makes highly efficient use of energy, and can be used in various environments. The grain-oriented electrical steel sheet has a strain distribution in regions where closure domains are formed, when observed in a cross section in the rolling direction, with a maximum tensile strain in a sheet thickness direction being 0.45% or less, and with a maximum tensile strain t (%) and a maximum compressive strain c (%) in the rolling direction satisfying Expression (1): t+0.06≤t+c≤0.35 (1).

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