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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：US11981821B2
公开(公告)日：2024-05-14
申请号：US17264129
申请日：2019-06-19
摘要： An insulating coating treatment liquid for forming a chromium-free insulating coating on a surface of a grain-oriented electrical steel sheet, the insulating coating treatment liquid including at least one phosphate salt selected from phosphate salts of any of Mg, Ca, Ba, Sr, Zn, Al, and Mn and including colloidal silica and particles of a metal-element-containing compound. A content of the colloidal silica in terms of SiO2, on a solids basis, is 50 to 120 parts by mass, and a content of the particles of a metal-element-containing compound in terms of elemental metal is 5 to 60 parts by mass, per 100 parts by mass of the at least one phosphate salt, and the insulating coating treatment liquid has a thixotropic index (TI) of 1.00 or greater and 10.00 or less.
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公开(公告)号：US20240102172A1
公开(公告)日：2024-03-28
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：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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6.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：US11926888B2
公开(公告)日：2024-03-12
申请号：US17417113
申请日：2019-12-26
CPC分类号： C22C38/18 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D9/46 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04
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, a phosphate in 0.1 parts by mass or more and 1.0 part by mass or less in terms of P per 100 parts by mass of the magnesia, 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 0.050 mass % or more and 1.0 mass % or less, where an amount of P adsorbed on per 1 g of the titanium oxide is 1.0×10−4 g or less.
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公开(公告)号：US11923115B2
公开(公告)日：2024-03-05
申请号：US16967945
申请日：2019-01-21
IPC分类号： B32B15/04 , B32B17/06 , C23C22/82 , C23C28/04 , H01F1/147 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C23C18/12
CPC分类号： H01F1/147 , C23C22/82 , C23C28/04 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C2202/02 , C23C18/1212 , C23C18/1241 , C23C18/127
摘要： An insulating coating-attached electrical steel sheet has, on at least one surface, an insulating coating including an insulating tensile coating layer A. A tension applied to the steel sheet by an insulating tensile coating layer having a coating weight of M/2 from a surface of the insulating tensile coating layer A is 0.80×σA or more, where M is a weight of the insulating tensile coating layer A, and σA is the tension applied to the steel sheet by the insulating tensile coating layer A. The insulating coating-attached electrical steel sheet has excellent adhesion of the insulating coating. A method for manufacturing the insulating coating-attached electrical steel sheet is also provided.
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公开(公告)号：US11473176B2
公开(公告)日：2022-10-18
申请号：US16766090
申请日：2018-10-12
IPC分类号： C22C38/00 , H01F1/18 , C21D8/02 , C21D9/46 , C23C14/06 , C23C14/08 , C23C14/10 , C23C14/16 , C23C14/34 , C23C16/30 , C23C16/40
摘要： Provided are: an oriented electrical steel sheet having a high tension applied to a steel sheet and excellent adhesion to a film; and a method for producing the same. This oriented electrical steel sheet includes: a steel sheet; a film A containing a crystalline material disposed on the steel sheet; and a film B containing a vitreous material disposed on the film A, wherein an element profile, which is obtained by using a high-frequency glow discharge light-emission surface analysis method, in the direction from the film B to the steel sheet satisfies formulae (1) and (2). 0.35≤(tA/tFe/2)≤0.75 . . . (1), 0.25≤(tA/2/tFe/2)≤1.00 . . . (2), where tA represents the peak time of an alkali metal element profile, tA/2 represents the half time of an alkali metal.
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公开(公告)号：US20210202145A1
公开(公告)日：2021-07-01
申请号：US17056847
申请日：2019-05-20
摘要： An electrical steel sheet having an insulating coating is provided. The electrical steel sheet is capable of reducing dielectric loss in a transformer in a case where the electrical steel sheet is used in a transformer core.
An electrical steel sheet having an insulating coating, the insulating coating being disposed on at least one of surfaces of the electrical steel sheet, the insulating coating having a relative dielectric constant at 1000 Hz of less than or equal to 15.0 and a dielectric loss tangent at 1000 Hz of less than or equal to 20.0.
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