-
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.
-
公开(公告)号：US11756713B2
公开(公告)日：2023-09-12
申请号：US16324211
申请日：2017-09-08
IPC分类号： H01F1/18 , C21D8/12 , C22C38/00 , C23C22/12 , C23C22/18 , C23C22/20 , C23C22/22 , C23C22/74 , H01F1/147
CPC分类号： H01F1/18 , C21D8/1283 , C21D8/1288 , C22C38/00 , C23C22/12 , C23C22/188 , C23C22/20 , C23C22/22 , C23C22/74 , H01F1/147 , C21D2201/05
摘要： A grain-oriented magnetic steel sheet with chromium-free insulating tension coating includes a grain-oriented magnetic steel sheet and an insulating tension coating containing a phosphate salt and silica on a surface of the grain-oriented magnetic steel sheet, the coating further including a crystalline compound represented by the general formula (1): MII3MIII4(XVO4)6 . . . (1). A method for producing a grain-oriented magnetic steel sheet with chromium-free insulating tension coating includes applying an insulating tension coating liquid to a surface of a finish annealed grain-oriented magnetic steel sheet, the coating liquid including colloidal silica, a phosphate salt and a metal element M-containing compound in a specific ratio, and heat treating the steel sheet at least one time at a temperature of not less than 900° C. in an atmosphere including a non-oxidizing gas and having a dew point of not more than 0° C.
-
公开(公告)号：US11578377B2
公开(公告)日：2023-02-14
申请号：US16611642
申请日：2018-05-10
IPC分类号： C21D9/46 , C21D6/00 , C21D8/12 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/18 , C22C38/60
摘要： A grain-oriented electrical steel sheet having excellent iron loss property is produced from a steel slab containing, by mass %, C: 0.002-0.15%, Si: 2.5-6.0%, Mn: 0.01-0.80%, Al: 0.010-0.050% and N: 0.003-0.020%, when: a heating rate between 500-700° C. in decarburization annealing is not less than 80° C./s, a surface roughness Ra of a work roll in final cold rolling is 0.01-3.0 μm, a total content of alkaline earth metals to MgO in annealing separator is 0-5 mass %, an average length L in rolling direction of passed crystal grains is not more than 25 mm, a ratio of crystal grains having a length in rolling direction of not more than 5 mm is 40-90%, and an existence ratio of alkaline earth metal sulfides having a size corresponding to circle of not less than 0.5 μm in a cross section of forsterite film is not more than 0.2/μm per unit length in sheet width direction.
-
公开(公告)号：US20210287834A1
公开(公告)日：2021-09-16
申请号：US16324211
申请日：2017-09-08
IPC分类号： H01F1/18 , H01F1/147 , C21D8/12 , C22C38/00 , C23C22/12 , C23C22/18 , C23C22/20 , C23C22/22 , C23C22/74
摘要： A grain-oriented magnetic steel sheet with chromium-free insulating tension coating includes a grain-oriented magnetic steel sheet and an insulating tension coating containing a phosphate salt and silica on a surface of the grain-oriented magnetic steel sheet, the coating further including a crystalline compound represented by the general formula (1): MII3MIII4(XVO4)6 . . . (1). A method for producing a grain-oriented magnetic steel sheet with chromium-free insulating tension coating includes applying an insulating tension coating liquid to a surface of a finish annealed grain-oriented magnetic steel sheet, the coating liquid including colloidal silica, a phosphate salt and a metal element M-containing compound in a specific ratio, and heat treating the steel sheet at least one time at a temperature of not less than 900° C. in an atmosphere including a non-oxidizing gas and having a dew point of not more than 0° C.
-
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.-
公开(公告)号：US10982329B2
公开(公告)日：2021-04-20
申请号：US15561335
申请日：2016-03-11
IPC分类号： C23C22/33 , C21D9/46 , C21D8/12 , C23C22/74 , C23C22/78 , C23C22/82 , H01F27/245 , H01F41/02
摘要： Provided are an insulation-coated oriented magnetic steel sheet having an insulating coat with excellent heat resistance; and a method for manufacturing the same. This insulation-coated oriented magnetic steel sheet has an oriented magnetic steel sheet, and an insulating coat arranged on the surface of the oriented magnetic steel sheet, the insulating coat containing Si, P, O, and Cr, and at least one element selected from the group consisting of Mg, Ca, Ba, Sr, Zn, Al, and Mn. The XPS spectrum of the outermost surface of the insulating coat has peaks observed at Cr2p1/2 and Cr2p3/2.
-
公开(公告)号：US10920323B2
公开(公告)日：2021-02-16
申请号：US15561369
申请日：2016-03-11
摘要： Provided are an insulating-coated oriented magnetic steel sheet having an insulating coating of excellent heat resistance, and a method for manufacturing the same. This insulating-coated oriented magnetic steel sheet has an oriented magnetic steel sheet, and an insulating coating arranged on the surface of the oriented magnetic steel sheet. The insulating coating contains Si, P, and O, and at least one element selected from the group consisting of Mg, Ca, Ba, Sr, Zn, Al, and Mn, the K-absorption edge of the P in the insulating coating having an XAFS spectrum that exhibits three absorption peaks from 2156 eV to 2180 eV.
-
公开(公告)号：US20200063234A1
公开(公告)日：2020-02-27
申请号：US16611642
申请日：2018-05-10
IPC分类号： C21D9/46 , C21D8/12 , C21D6/00 , C22C38/60 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/18 , C22C38/16 , C22C38/08 , C22C38/12
摘要： A grain-oriented electrical steel sheet having excellent iron loss property is produced from a steel slab containing, by mass %, C: 0.002-0.15%, Si: 2.5-6.0%, Mn: 0.01-0.80%, Al: 0.010-0.050% and N: 0.003-0.020%, when: a heating rate between 500-700° C. In decarburization annealing is not less than 80° C./s, a surface roughness Ra of a work roll in final cold rolling is 0.01-3.0 μm, a total content of alkaline earth metals to MgO in annealing separator is 0-5 mass %, an average length L in rolling direction of passed crystal grains is not more than 25 mm, a ratio of crystal grains having a length in rolling direction of not less than 0.5 μm is 40-90%, and an existence ratio of alkaline earth metal sulfides having a size corresponding to circle of not less than 0.5 μm in a cross section of forsterite film is not more than 0.2/μm per unit length in sheet width direction.
-
公开(公告)号：US10435791B2
公开(公告)日：2019-10-08
申请号：US16117427
申请日：2018-08-30
IPC分类号： C23C22/12 , C23C22/18 , C23C22/20 , C23C22/22 , C23C22/74 , C23C22/78 , C21D8/12 , C21D6/00 , C21D9/46 , H01F1/18
摘要： Provided is a treatment solution for chromium-free tension coating that can simultaneously achieve excellent moisture absorption resistance and a high iron loss reduction effect obtained by imparting sufficient tension, by using an inexpensive Ti source instead of expensive Ti chelate. The treatment solution for chromium-free tension coating contains: one or more of phosphates of Mg, Ca, Ba, Sr, Zn, Al, and Mn; colloidal silica in an amount of 50 parts by mass to 120 parts by mass per 100 parts by mass of the phosphate in terms of solid content of SiO2; Ti source in an amount of 30 parts by mass to 50 parts by mass per 100 parts by mass of the phosphate in terms of solid content of TiO2; and H3PO4, and the number of moles of metallic elements in the phosphate and of phosphorus in the treatment solution satisfy: 0.20≤([Mg]+[Ca]+[Ba]+[Sr]+[Zn]+[Mn]+1.5[Al])/[P]≤0.45 (1).
-
40.发明申请公开(公告)号：US20190226093A1
公开(公告)日：2019-07-25
申请号：US16325014
申请日：2017-08-21
摘要： Provided are coated metal, the metal having improved properties due to a novel coating, a coating-forming treatment solution for forming the novel coating, and a method for producing the coated metal that has the novel coating.The coated metal includes metal and a coating formed on the metal. The coating includes Si, P, and O, and at least one selected from the group consisting of Mg, Ca, Ba, Sr, Zn, Al, and Mn. The coating includes a compound having a NASICON-type crystal structure represented by the general formula MIMIV2(MVO4)3.
-
-
-
-
-
-
-
-
-
搜索结果
55 条记录 (耗时 0.027 秒)
