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公开(公告)号：US20250026967A1
公开(公告)日：2025-01-23
申请号：US18714079
申请日：2022-11-29
Applicant: TOAGOSEI CO., LTD. , NIPPON STEEL CORPORATION
Inventor： Yoshiaki IWASE , Mikako ARAI , Kazutoshi TAKEDA , Minako FUKUCHI
IPC: C09J133/10 , B32B3/26 , B32B15/04 , B32B15/18 , C09J11/06
Abstract: An anaerobic curing adhesive composition of the disclosure contains a polymer or an oligomer having two or more (meth)acryloyl groups in one molecule, a polyfunctional ethylenically unsaturated compound other than the urethane (meth)acrylate, a radical polymerization initiator, and an anaerobic curing catalyst.
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公开(公告)号：US20250026968A1
公开(公告)日：2025-01-23
申请号：US18714379
申请日：2022-11-29
Applicant: TOAGOSEI CO., LTD. , NIPPON STEEL CORPORATION
Inventor： Yoshiaki IWASE , Mikako ARAI , Makoto NIWA , Kazutoshi TAKEDA , Minako FUKUCHI , Yoshiaki NATORI
IPC: C09J133/10 , C09J11/06
Abstract: An anaerobic curing adhesive composition of the disclosure contains a compound having an aromatic ring and an ethylenically unsaturated group, a polymer or an oligomer having two or more (meth)acryloyl groups in one molecule, a radical polymerization initiator, and an anaerobic curing catalyst.
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公开(公告)号：US20240209482A1
公开(公告)日：2024-06-27
申请号：US18286681
申请日：2022-04-13
Applicant: NIPPON STEEL CORPORATION , TOAGOSEI CO., LTD.
Inventor： Kazutoshi TAKEDA , Shinsuke TAKATANI , Ryu HIRAYAMA , Minako FUKUCHI , Yoshiaki IWASE , Makoto NIWA , Makoto HIRAKAWA
CPC classification number: C22C38/02 , C22C38/04 , C22C38/06 , H01F1/14791 , H01F1/18 , H02K15/024 , H02K1/02
Abstract: This electrical steel sheet contains: as a chemical composition, in a unit of mass %, 2.5% to 3.9% of Si; 0.001% to 3.0% of Al; and 0.05% to 5.0% of Mn, the remainder being Fe and impurities, and, on one surface or both surfaces thereof, an insulating coating containing a curing accelerator is formed.
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4.发明公开
公开(公告)号：US20240190119A1
公开(公告)日：2024-06-13
申请号：US18286501
申请日：2022-04-13
Applicant: NIPPON STEEL CORPORATION , TOAGOSEI CO., LTD.
Inventor： Kazutoshi TAKEDA , Shinsuke TAKATANI , Ryu HIRAYAMA , Minako FUKUCHI , Yoshiaki IWASE , Makoto NIWA , Makoto HIRAKAWA
IPC: B32B37/12 , B30B9/28 , B32B7/12 , B32B15/04 , B32B15/18 , B32B37/10 , C09J5/02 , C22C38/02 , C22C38/04 , C22C38/06 , H02K1/02 , H02K15/02
CPC classification number: B32B37/12 , B30B9/28 , B32B7/12 , B32B15/043 , B32B15/18 , B32B37/10 , C09J5/02 , C22C38/02 , C22C38/04 , C22C38/06 , H02K1/02 , H02K15/02 , B32B2309/12 , B32B2311/30 , C22C2202/02
Abstract: This bonded and stacked core manufacturing method is for manufacturing a bonded and stacked core by performing press working on a strip-shaped steel sheet with a press working oil applied to one surface or both surfaces thereof, applying an adhesive to one surface of the strip-shaped steel sheet to obtain a plurality of steel sheet components, and stacking and bonding the steel sheet components, in which a curing accelerator having an average viscosity of 0.01 Pa·s to 100 Pa·s is applied to one surface or both surfaces of the strip-shaped steel sheet before the press working oil is applied.
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5.发明公开
公开(公告)号：US20230253140A1
公开(公告)日：2023-08-10
申请号：US18014352
申请日：2021-07-06
Applicant: NIPPON STEEL CORPORATION , TOAGOSEI CO., LTD.
Inventor： Kazutoshi TAKEDA , Shinsuke TAKATANI , Ryu HIRAYAMA , Yoshiaki IWASE , Makoto NIWA , Masashi YAMADA
IPC: H01F27/26 , C09J133/20 , C09J11/04 , C09J11/06
CPC classification number: H01F27/263 , C09J133/20 , C09J11/04 , C09J11/06 , C09J2400/163
Abstract: This adhesively-laminated core manufacturing method is a method for manufacturing an adhesively-laminated core by punching a plurality of steel sheet parts while a strip-shaped steel sheet is fed and laminating the steel sheet parts via an adhesive, and includes a step of forming a curing acceleration portion by applying and drying a curing accelerator on one or both surfaces of the strip-shaped steel sheet before a pressing oil is applied, and a step of applying the pressing oil to a surface of the curing acceleration portion.
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公开(公告)号：US20240379265A1
公开(公告)日：2024-11-14
申请号：US18688684
申请日：2022-09-02
Applicant: NIPPON STEEL CORPORATION
Inventor： Kazutoshi TAKEDA , Minako FUKUCHI , Yoshiaki NATORI , Hiroyasu FUJII , Shinsuke TAKATANI
Abstract: A non-oriented electrical steel sheet 1 of the present embodiment is provided with a base metal steel sheet 10 and an insulating coating film 20 formed on the surface of the base metal steel sheet 10. The insulating coating film 20 contains metal phosphate, organic resin, and nitrite. The insulating coating film 20 has a nitrogen content of 0.05-5.00% by mass.
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公开(公告)号：US20240183012A1
公开(公告)日：2024-06-06
申请号：US18285451
申请日：2022-04-06
Applicant: NIPPON STEEL CORPORATION
Inventor： Kazutoshi TAKEDA , Takashi KATAOKA , Shinsuke TAKATANI , Yuuki KOGAKURA , Yuki KUNITA
CPC classification number: C22C38/02 , C21D6/008 , C21D8/1272 , C21D8/1283 , C21D8/1288 , C22C38/001 , C22C38/004 , C22C38/04 , C22C38/06 , C21D2201/05
Abstract: This grain-oriented electrical steel sheet includes: a base steel sheet; and an insulating coating formed on a surface of the base steel sheet, in which the insulating coating includes an intermediate layer formed on a base steel sheet side and containing a crystalline metal phosphate, and a tension coating layer formed on a surface side of the insulating coating, an average thickness of the intermediate layer is 0.3 to 10.0 μm, an average thickness of the insulating coating is 2.0 to 10.0 μm, the crystalline metal phosphate of the intermediate layer is one or two or more of zinc phosphate, manganese phosphate, iron phosphate, and zinc calcium phosphate, the tension coating layer contains a metal phosphate and silica, and an amount of the silica in the tension coating layer is 20 to 60 mass %.
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公开(公告)号：US20240177899A1
公开(公告)日：2024-05-30
申请号：US18283423
申请日：2022-03-28
Applicant: NIPPON STEEL CORPORATION
Inventor： Takashi KATAOKA , Tomohito TANAKA , Masataka IWAKI , Kazutoshi TAKEDA , Hideyuki HAMAMURA
IPC: H01F1/147 , C21D6/00 , C21D8/12 , C21D9/46 , C21D10/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/16 , C22C38/34 , C22C38/60 , C23D3/00 , C23D5/04 , C23D13/00
CPC classification number: H01F1/14783 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/1222 , C21D8/1233 , C21D8/1255 , C21D8/1261 , C21D8/1266 , C21D8/1283 , C21D8/1288 , C21D9/46 , C21D10/005 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/16 , C22C38/34 , C22C38/60 , C23D3/00 , C23D5/04 , C23D13/00 , C21D2201/05 , C22C2202/02
Abstract: This grain-oriented electrical steel sheet includes a base steel sheet having a predetermined chemical composition, a glass coating formed on the base steel sheet, and a tension-applied insulation coating formed on the glass coating, on a front surface of the base steel sheet, a plurality of linear strains that extend continuously or intermittently in a direction intersecting with a rolling direction are present, intervals p in the rolling direction of the plurality of linear strains adjacent to each other are 3.0 to 9.0 mm, widths of the linear strains are 10 to 250 μm, and, in an X-ray topographic spectrum in a range of 1.50 mm in the rolling direction that is obtained from an X-ray topographic image of the front surface and includes the linear strain at a center, a full width at half maximum of a peak of the X-ray topographic spectrum including a maximum value of a spectral intensity is 0.02 mm or more and 0.10 mm or less.
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公开(公告)号：US20240035131A1
公开(公告)日：2024-02-01
申请号：US18283152
申请日：2022-03-30
Applicant: NIPPON STEEL CORPORATION
Inventor： Yoshiaki NATORI , Hiroyoshi YASHIKI , Minako FUKUCHI , Kazutoshi TAKEDA
CPC classification number: C22C38/02 , C22C38/04 , C22C38/002 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D8/0205
Abstract: This non-oriented electrical steel sheet has a predetermined chemical composition, and in which the tensile strength is 580 MPa or more, the average grain size of a recrystallization part of base iron is 50 μm or less, and in inclusions having an equivalent circle diameter of 1 μm or more and an S content of 5 mass % or more contained in base iron, the number of inclusions having a Mg content of more than 5 mass % and a Mn content of 5 mass % or more is 5 times or more the number of inclusions having a Mg content of 5 mass % or less and a Mn content of 5 mass % or more.
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10.发明公开
公开(公告)号：US20230257622A1
公开(公告)日：2023-08-17
申请号：US18010555
申请日：2021-06-17
Applicant: NIPPON STEEL CORPORATION
Inventor： Kazutoshi TAKEDA , Shinsuke TAKATANI , Minako FUKUCHI , Ichiro TANAKA
CPC classification number: C09D163/00 , C09D5/00 , H01F1/18 , H02K1/02 , H02K1/06 , B32B15/18 , B32B15/043 , B32B7/12 , B32B2255/06 , B32B2255/26 , B32B2603/00
Abstract: An electrical steel sheet used for a laminated core is an electrical steel sheet including an insulation coating 3 on a surface of a base steel sheet 2, the insulation coating being coated with a coating composition for an electrical steel sheet. The coating composition for an electrical steel sheet contains an epoxy resin, a first curing agent including an alkylphenol, and a second curing agent including either one or both of a phenol resol resin and a phenol novolac resin formulated in specific proportions.
