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公开(公告)号：EP3584330A1
公开(公告)日：2019-12-25
申请号：EP18754457.2
申请日：2018-01-17
摘要： In a grain-oriented electrical steel sheet, comprising magnetic domains refined by a plurality of linear grooves in a surface of a steel sheet, each of the linear grooves is provided on its floor with a plurality of recessed parts aligned in a direction in which the linear groove extends, at a predetermined interval p (µm), and the recessed part is made to have a predetermined depth d (µm). In this way, it is possible to provide a grain-oriented electrical steel sheet having further improved iron loss properties while having reduced magnetic flux density reduction.
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2.发明公开
公开(公告)号：EP3533902A1
公开(公告)日：2019-09-04
申请号：EP17885024.4
申请日：2017-12-06
IPC分类号： C23C22/00 , C21D8/12 , C21D9/46 , C22C38/00 , C22C38/60 , C23C14/06 , C23C16/34 , H01F1/147 , C23C28/04
摘要： Provided are: a grain-oriented electrical steel sheet that has excellent coating adhesiveness and an excellent magnetic property after stress relief annealing; and a production method for therefor. The grain-oriented electrical steel sheet has: a steel sheet; a coating layer A which is a ceramic coating having an oxide content of less than 30 mass% and which is disposed on the steel sheet; and a coating layer B which is an insulating tensile coating containing an oxide and which is disposed on the coating layer A. When a Gaussian fitting is performed on a 31 P-NMR spectrum of the coating layer B within the range of 0 to -60 ppm, the proportion of a peak area of -17 to -33 ppm to the total peak area is 30% or more.
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3.发明公开
公开(公告)号：EP3508614A1
公开(公告)日：2019-07-10
申请号：EP17846175.2
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 M I M IV 2 (M V O 4 ) 3 .-
公开(公告)号：EP3831980A1
公开(公告)日：2021-06-09
申请号：EP19844025.7
申请日：2019-06-19
摘要： [Object] To provide an insulating coating treatment liquid that can form a chromium-free insulating coating having excellent moisture absorption resistance and being capable of imparting a high tension to produce an excellent iron loss reducing effect, the insulating coating treatment liquid also inhibiting an appearance defect due to coating non-uniformities that may occur in a case where the insulating coating treatment liquid is applied to a steel sheet.
[Solution] An insulating coating treatment liquid, which is 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, wherein a content of the colloidal silica in terms of SiO 2 , 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.-
公开(公告)号：EP3767008A1
公开(公告)日：2021-01-20
申请号：EP19811553.7
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.-
6.发明公开
公开(公告)号：EP3546614A1
公开(公告)日：2019-10-02
申请号：EP17874944.6
申请日：2017-11-20
摘要： Provided are: a grain-oriented electromagnetic steel sheet which exhibits excellent magnetic characteristics and excellent coating film adhesion after strain relieving annealing; and a method for producing this grain-oriented electromagnetic steel sheet. This grain-oriented electromagnetic steel sheet comprises: a steel sheet; a coating film layer A that is a ceramic coating film which is formed on the steel sheet and has an oxide content of less than 30% by mass; and a coating film layer B that is an insulating tension coating film which is arranged on the coating film layer A and contains an oxide. The binding energy of the 1s orbital of oxygen in the coating film layer B is higher than 530 eV; and the tension applied to the steel sheet by the coating film layer B per a thickness of 1.0 µm of the coating film layer B is 4.0 MPa/µm or more.
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7.发明公开INSULATION-COATED ORIENTED MAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME 审中-公开隔离涂层取向的磁性钢板及其制造方法
公开(公告)号：EP3276011A1
公开(公告)日：2018-01-31
申请号：EP16772206.5
申请日：2016-03-11
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 Cr2p 1/2 and Cr2p 3/2 .
摘要翻译： 本发明提供具有绝缘被膜的耐热性优异的绝缘被覆取向电磁钢板， 及其制造方法。 该绝缘被覆取向电磁钢板具有取向电磁钢板和配置在该取向电磁钢板表面上的绝缘被膜，该被覆电绝缘被膜包含Si，P，O和Cr，以及选自 由Mg，Ca，Ba，Sr，Zn，Al和Mn组成的组。 绝缘涂层的最外表面的XPS谱在Cr2p1 / 2和Cr2p3 / 2处观察到峰。
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8.发明公开
公开(公告)号：EP4206136A1
公开(公告)日：2023-07-05
申请号：EP21861643.1
申请日：2021-08-25
摘要： Provided is a powder for annealing separator that is used for a grain-oriented electrical steel sheet and enables obtainment of a grain-oriented electrical steel sheet having excellent magnetic properties as a result of favorable purification of impurities in steel. The powder for annealing separator contains magnesium oxide as a main component, and has a nitrogen gas permeability of 0.020 cm/s or more and 0.50 cm/s or less in a state of being applied between coiled steel sheets before start of secondary recrystallization.
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公开(公告)号：EP3904542A1
公开(公告)日：2021-11-03
申请号：EP19903139.4
申请日：2019-12-26
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 is mainly composed of MgO, 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 and is mainly composed of TiO 2 , 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：EP3144399B1
公开(公告)日：2019-09-04
申请号：EP15792135.4
申请日：2015-05-11
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