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1.发明公开公开(公告)号：US20240105384A1
公开(公告)日：2024-03-28
申请号：US17769049
申请日：2020-09-16
IPC分类号： H01F41/00 , C21D6/00 , C21D8/12 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C38/60 , C23C22/07
CPC分类号： H01F41/00 , C21D6/005 , C21D6/008 , C21D8/1222 , C21D8/1233 , C21D8/1261 , C21D8/1272 , C21D8/1283 , C21D9/46 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C38/60 , C23C22/07 , C22C2202/02
摘要： A method for forming a film on a surface of a steel sheet includes applying a treatment solution for forming a film containing a fibrous material to the surface of the steel sheet by using a coater under a condition in which a difference between a speed of the steel sheet and a speed of an applicator of the coater is 1.0 m/min or more, inclining the surface of the steel sheet, to which the treatment solution for forming a film has been applied, at an angle of 10° or more with respect to a horizontal plane until drying is started, and thereafter drying the steel sheet.
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公开(公告)号：US11894167B2
公开(公告)日：2024-02-06
申请号：US16474646
申请日：2017-11-17
IPC分类号： C23C22/78 , C23G1/08 , H01F1/147 , H01F27/34 , H01F27/245
CPC分类号： H01F1/147 , C23C22/78 , C23G1/083 , H01F27/34 , H01F27/245
摘要： A grain-oriented electrical steel sheet having an insulating film disposed on a surface thereon. The insulating film having a chemical composition comprising Si, P, O, and at least one selected from the group consisting of Mg, Ca, Ba, Sr, Zn, Al, Mn, and Co. The insulating film has a crystallinity in a range of 20% or more, and a minimum tension provided to the steel sheet by the insulating film at a temperature in a range of 100° C. to 200° C. is 10 MPa or more.
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3.发明授权公开(公告)号：US10395807B2
公开(公告)日：2019-08-27
申请号：US15028841
申请日：2014-10-23
IPC分类号： H01F1/147 , C21D8/12 , C21D9/46 , C22C38/00 , C22C38/60 , H01F1/18 , C21D8/02 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C23C22/33 , C23C22/74
摘要： There is provided a grain-oriented electrical steel sheet stably having excellent magnetic characteristics and coating adhesion even when a rapid heating is conducted in a primary recrystallization annealing (decarburization annealing). Concretely, it is a grain-oriented electrical steel sheet provided on its sheet surface with a tension-applying type insulation coating constituted with a coating layer A formed on a steel sheet side and mainly composed of an oxide and a coating layer B formed on a surface side and mainly composed of glass, characterized in that a ratio R (σB/σA) of a tension σB of the coating layer B on the surface side applied to the steel sheet to a tension σA of the coating layer on the steel sheet side A applied to the steel sheet is within a range of 1.20-4.0.
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公开(公告)号：US10294543B2
公开(公告)日：2019-05-21
申请号：US15310904
申请日：2015-05-11
IPC分类号： C21D9/46 , C21D8/12 , H01F41/02 , H01F1/047 , H01F1/147 , C21D3/04 , H01F1/16 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/60 , C22C38/00 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/32 , C22C38/34 , H01F1/03
摘要： A method for producing a grain-oriented electrical steel sheet by subjecting a slab of an inhibitor-less ingredient system containing C: 0.002-0.10 mass %, Si: 2.5-6.0 mass %, Mn: 0.010-0.8 mass % and extremely decreased Al, N, Se and S to hot rolling, hot band annealing, cold rolling, decarburization annealing, application of an annealing separator and finish annealing, when a certain temperature within range of 700-800° C. in a heating process of decarburization annealing is T1 and a certain temperature as a soaking temperature within a range of 820-900° C. is T2, a heating rate R1 between 500° C. and T1 is set to not less than 100° C./s and heating rate R2 between T1 and T2 is set to not more than 15° C./s, whereby grain-oriented electrical steel sheet having excellent iron loss property and coating peeling resistance is obtained in the inhibitor-less ingredient system while ensuring decarburization property even when rapid heating is performed during decarburization annealing.
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公开(公告)号：US09617616B2
公开(公告)日：2017-04-11
申请号：US14415089
申请日：2013-07-25
IPC分类号： C21D9/46 , C21D8/12 , C22C38/00 , C22C38/60 , H01F1/16 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/16 , C22C38/40 , C21D6/00 , C22C38/34 , H01F1/147
CPC分类号： C21D9/46 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/12 , C21D8/1222 , C21D8/1233 , C21D8/1255 , C21D8/1261 , C21D8/1266 , C21D8/1272 , C21D8/1283 , C21D2201/05 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/16 , C22C38/34 , C22C38/40 , C22C38/60 , H01F1/14775 , H01F1/16
摘要： In a method for producing a grain-oriented electrical steel sheet by comprising a series of steps of hot rolling a raw steel material containing C: 0.002-0.10 mass %, Si: 2.0-8.0 mass % and Mn: 0.005-1.0 mass % to obtain a hot rolled sheet, subjecting the hot rolled steel sheet after or without hot band annealing to one stage cold rolling or two or more stage cold rollings including an intermediate annealing therebetween to obtain a cold rolled sheet having a final sheet thickness, subjecting the cold rolled sheet to decarburization annealing combined with primary recrystallization annealing, applying an annealing separator to the steel sheet surface and then subjecting to a final annealing, when rapid heating is performed at a rate of not less than 50° C./s in a range of 200-700° C. of the decarburization annealing, the cold rolled sheet is subjected to holding at any temperature of 250-600° C. for 1-10 seconds thereof to thereby produce a grain-oriented electrical steel sheet being low in the iron loss and small in the deviation of the iron loss value.
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6.发明申请GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF PRODUCING THE SAME (AS AMENDED) 有权面向导电的电工钢板及其制造方法（如修改）公开(公告)号：US20140251514A1
公开(公告)日：2014-09-11
申请号：US14352904
申请日：2012-10-16
CPC分类号： H01F1/14775 , C21D8/0263 , C21D8/1222 , C21D8/1233 , C21D8/1272 , C21D9/46 , C22C38/001 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/34 , C22C38/60 , C23C22/33 , C23C22/74 , H01F1/16
摘要： In a method of producing 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˜1.0 mass %, one or two of S and Se: 0.01˜0.05 mass % in total, sol. Al: 0.003˜0.050 mass % and N: 0.001˜0.020 mass %, cold rolling, subjecting to primary recrystallization annealing, applying an annealing separator and finally subjecting to final annealing, the primary recrystallization annealing is conducted so as to control a heating rate S1 between 500 and 600° C. to not less than 100° C./s and a heating rate S2 between 600 and 700° C. to not less than 30° C./s but not more than 0.6×S1, and as a main ingredient of the annealing separator is used MgO having an expected value μ(A) of citric acid activity distribution of 3.5˜3.8, a cumulative frequency F of 25˜45% when an activity A is not less than 4.0.
摘要翻译： 在通过热轧钢板的方法中，C：0.001〜0.10质量％，Si：1.0〜5.0质量％，Mn：0.01〜1.0质量％，S和Se中的一种或两种 ：0.01〜0.05质量％，溶胶。 Al：0.003〜0.050质量％，N：0.001〜0.020质量％，冷轧，进行一次再结晶退火，涂布退火分离剂，最后进行最终退火，进行一次再结晶退火，控制加热速度S1 在500至600℃至不低于100℃/秒之间，加热速率S2在600至700℃之间至不低于30℃/秒但不大于0.6×S1，并且作为 使用退火分离器的主要成分，当活性A不小于4.0时，使用柠檬酸活性分布的预期值μ（A）为3.5〜3.8，累积频率F为25〜45％的MgO。
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公开(公告)号：US12104257B2
公开(公告)日：2024-10-01
申请号：US17769061
申请日：2020-06-25
CPC分类号： C23C26/00 , B05D1/28 , B05D2202/15 , B05D2401/20
摘要： An electrical steel sheet with an insulating film, the steel sheet having an insulating film containing a crystalline fibrous material on a surface of the steel sheet, in which a ratio (LRD/LTD) of a length in a rolling direction (LRD) of the crystalline fibrous material in a cross section in the rolling direction of the insulating film to a length in a direction perpendicular to the rolling direction (LTD) of the crystalline fibrous material in a cross section in the direction perpendicular to the rolling direction of the insulating film is 1.5 or more and 50.0 or less.
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公开(公告)号：US12104216B2
公开(公告)日：2024-10-01
申请号：US17417375
申请日：2019-12-26
IPC分类号： C21D9/46 , C21D6/00 , C21D8/00 , C21D8/12 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , H01F1/147
CPC分类号： C21D9/46 , C21D6/005 , C21D6/008 , C21D8/005 , C21D8/1222 , C21D8/1233 , C21D8/1272 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , H01F1/147 , C22C2202/02
摘要： Provided is an annealing separator with which a grain-oriented electrical steel sheet having a forsterite film with excellent appearance uniformity and adhesion can be obtained. The annealing separator for grain-oriented electrical steel sheet comprises: magnesia that contains 0.05 mass % or more and 0.20 mass % or less of B and 0.01 mass % or more and 0.10 mass % or less of P, and titanium oxide in 1.0 part by mass or more and 10.0 parts by mass or less per 100 parts by mass of the magnesia where the titanium oxide contains one or more types of alkali metals in a total amount of 0.0050 mass % or more and 0.50 mass % or less, where an amount of P adsorbed on per 1 g of the titanium oxide is 1.5×10−4 g or more and 1.0×10−3 g or less.
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9.发明授权公开(公告)号：US12033791B2
公开(公告)日：2024-07-09
申请号：US17769049
申请日：2020-09-16
IPC分类号： B05D3/00 , B05D7/14 , B05D7/24 , C21D6/00 , C21D8/12 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C38/60 , C23C22/07 , H01F41/00
CPC分类号： H01F41/00 , C21D6/005 , C21D6/008 , C21D8/1222 , C21D8/1233 , C21D8/1261 , C21D8/1272 , C21D8/1283 , C21D9/46 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C38/60 , C23C22/07 , C22C2202/02
摘要： A method for forming a film on a surface of a steel sheet includes applying a treatment solution for forming a film containing a fibrous material to the surface of the steel sheet by using a coater under a condition in which a difference between a speed of the steel sheet and a speed of an applicator of the coater is 1.0 m/min or more, inclining the surface of the steel sheet, to which the treatment solution for forming a film has been applied, at an angle of 10° or more with respect to a horizontal plane until drying is started, and thereafter drying the steel sheet.
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公开(公告)号：US11459633B2
公开(公告)日：2022-10-04
申请号：US16957461
申请日：2018-12-27
发明人： Masanori Takenaka , Makoto Watanabe , Yuiko Ehashi
IPC分类号： C21D9/46 , C21D1/34 , C21D6/00 , C21D8/00 , C21D8/12 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/32 , C22C38/34 , C22C38/48 , C22C38/50 , C22C38/60 , H01F1/147
摘要： In a production of a grain-oriented electrical steel sheet by subjecting a steel slab containing a particular composition and further including an inhibitor-forming ingredient to hot rolling, hot-band annealing, cold rolling, primary recrystallization annealing combined with decarburization annealing and finish annealing, the steel slab satisfies a given relation between a content ratio of sol. Al to N and a final sheet thickness, and, in the finish annealing, the steel sheet is kept at a temperature zone of higher than 850° C. but not higher than 950° C. in heating process for 5 to 200 hours, heated to a temperature zone of 950 to 1050° C. at 5 to 30° C./hr and further subjected to purification treatment of keeping a temperature of not lower than 1100° C. for not less than 2 hours to provide a secondary recrystallization structure that has an average value of a diameter equivalent to a circle of 10 to 100 mm.
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