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公开(公告)号：US11613673B2
公开(公告)日：2023-03-28
申请号：US16958137
申请日：2018-12-17
Applicant: POSCO
Inventor： Bongwoo Ha , Jung-Woo Kim , Taeyoung No
Abstract: An electrical steel sheet adhesive coating composition according to an exemplary embodiment of the present invention includes, based on 100 wt % of the total solids: a resin at 20 to 40 wt % and having an average particle diameter of 10 to 300 nm; an inorganic nanoparticle at 10 to 35 wt % bonded with the resin; a metal phosphoric acid salt at 10 to 30 wt %; and phosphoric acid at 10 to 40 wt %.
An electrical steel sheet product according to an exemplary embodiment of the present invention includes a plurality of electrical steel sheets; and an adhesive layer disposed between the plurality of electrical steel sheets, wherein the adhesive layer includes a metal of one or more kinds among Al, Mg, Ca, Co, Zn, Zr, and Fe at 0.5 to 30 wt %, N at 0.1 to 10 wt %, C at 0.1 to 5 wt %, P at 1 to 30 wt %, a metal of one or more kinds among Si and Ti at 10 to 30 wt %, and a balance of O.-
公开(公告)号：US11505723B2
公开(公告)日：2022-11-22
申请号：US16473033
申请日：2017-12-22
Applicant: POSCO
Inventor： Jung-Woo Kim , Bongwoo Ha , Changhoon Choi , Taeyoung No , Heon-Jo Choi , Won-Seog Bong
IPC: C09J11/04 , B32B15/01 , B32B37/12 , C09J5/00 , C09J123/06 , C09J125/06 , C09J133/04 , C09J161/06 , C09J163/00 , C09J175/04 , C09J183/04 , H01F1/16
Abstract: The present invention has been made in an effort to provide an adhesive coating composition capable of adhering (fastening) a non-oriented electrical steel sheet without using a conventional fastening method such as welding, clamping, or interlocking, a non-oriented electrical steel sheet stack to which the same is applied, and a manufacturing method thereof. According to an exemplary embodiment of the present invention, an adhesive coating composition includes: 40 to 99 wt % of a first component containing a water-soluble resin; and 1 to 60 wt % of a second component containing a composite metal phosphate.
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公开(公告)号：US12251922B2
公开(公告)日：2025-03-18
申请号：US17280577
申请日：2019-09-24
Applicant: POSCO
Inventor： Jung-Woo Kim , Bongwoo Ha , Taeyoung No , Dong-Gyu Lee
IPC: B32B7/12 , B32B7/025 , B32B15/01 , B32B37/08 , B32B37/10 , B32B37/12 , C08K3/22 , C08K3/32 , C09J163/00
Abstract: A method for manufacturing an electrical steel sheet product according to an exemplary embodiment of the present invention includes: preparing an adhesive coating composition; forming an adhesive coating layer by applying and then curing the adhesive coating composition onto a surface of an electrical steel sheet; forming a heat-fused layer by laminating and heat-fusing a plurality of electrical steel sheets on which the adhesive coating layers are formed; and cooling the heat-fused electrical steel sheets at a cooling rate of 0.05 to 20° C./min.
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公开(公告)号：US20240051269A1
公开(公告)日：2024-02-15
申请号：US18268269
申请日：2021-12-20
Applicant: POSCO Co., Ltd
Inventor： Jungwoo Kim , Bongwoo Ha , Donggyu Lee , Taeyoung No , Gyeongryeol Park
CPC classification number: B32B15/18 , B32B15/043 , B32B7/12 , B32B37/12 , B32B37/1284 , B32B37/18 , H02K1/02 , B32B2255/26 , B32B2255/06 , B32B2307/748 , B32B2309/12 , B32B2311/30 , B32B2457/00 , B32B2037/1253 , B32B2305/72 , B32B2307/206
Abstract: The present invention relates to an electrical steel sheet laminate, and provided is an electrical steel sheet laminate comprising: a plurality of electrical steel sheets; and polymer adhesive layers positioned between the electrical steel sheets, wherein the coating thickness of the polymer adhesive layers is 1.8-5.4 μm, the space factor of the laminate is 95.8-98.5%, and the following mathematical formula 1 is satisfied. [Mathematical Formula 1] 172.4≤space factor (%)×thickness (μm)≤531.
172.4≤space factor (%)×thickness(μm)≤531 [Equation 1]-
公开(公告)号：US11508501B2
公开(公告)日：2022-11-22
申请号：US16065532
申请日：2016-12-22
Applicant: POSCO
Inventor： Min Serk Kwon , Heon Jo Choi , Taeyoung No , Byung Deug Hong
IPC: B32B3/00 , H01F1/147 , C23C4/134 , C21D6/00 , C21D8/00 , C21D8/12 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C23C4/10
Abstract: Provided is an oriented electrical steel sheet including: a forsterite film formed on one side or both sides of an oriented electrical steel sheet substrate; and a ceramic layer formed on an entire or partial region of the forsterite film. Provided is a manufacturing method for an oriented electrical steel sheet including: preparing an oriented electrical steel sheet having a forsterite film formed on one surface or both surfaces thereof; and forming a ceramic layer by spraying ceramic powder on the forsterite film.
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Patent Agency Ranking
公开(公告)号：US20240301237A1
公开(公告)日：2024-09-12
申请号：US18268806
申请日：2021-12-16
Applicant: POSCO Co., Ltd
Inventor： Bongwoo Ha , Jungwoo Kim , Kang Seo , Daegyu Kang , Taeyoung No , Donggyu Lee , Gyeongryeol Park
IPC: C09D175/08 , B32B7/12 , B32B15/04 , B32B15/18 , C08G18/48 , C08G18/72 , C08G18/73 , C08G18/76 , C08K3/04 , C08K3/22 , C08K3/36 , C09D7/61 , H01F1/147
CPC classification number: C09D175/08 , B32B7/12 , B32B15/043 , B32B15/18 , C08G18/4825 , C08G18/722 , C08G18/73 , C08G18/7614 , C08G18/7671 , C08K3/04 , C08K3/22 , C08K3/36 , C09D7/61 , H01F1/14791 , B32B2255/06 , B32B2255/26 , B32B2264/1021 , B32B2264/1022 , B32B2264/108 , B32B2307/748 , C08K2003/2241
Abstract: The present invention relates to an electrical steel sheet and a laminate thereof, and provided is an electrical steel sheet including: an electrical steel sheet, and a polyurethane coating layer positioned on the electrical steel shoot, in which the rebound clastic modulus of the polyurethane coating layer is 5% to 30%.
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公开(公告)号：US11848131B2
公开(公告)日：2023-12-19
申请号：US17280416
申请日：2019-09-25
Applicant: POSCO
Inventor： Bongwoo Ha , Jung-Woo Kim , Taeyoung No
CPC classification number: H01F1/147 , B32B7/12 , B32B15/18 , B32B2307/208
Abstract: An embodiment of the present invention provides an electrical steel sheet laminate, including: a plurality of electrical steel sheets; and a fusion layer disposed between the electrical steel sheets, wherein the fusion layer includes an olefin-based semi-crystalline polymer and at least one inorganic metal compound of a metal phosphate and a metal chromate.
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8.发明申请公开(公告)号：US20200087760A1
公开(公告)日：2020-03-19
申请号：US16473047
申请日：2017-12-21
Applicant: POSCO
Inventor： Jung-Woo Kim , Bongwoo Ha , Taeyoung No , Won-Seog Bong
Abstract: An embodiment of the present invention provides: an adhesive coating composition capable of attaching (coupling) an electrical steel sheet without using an existing coupling method, such as welding, clamping, or interlocking; an electrical steel sheet laminate employing the same; and a manufacturing method therefor. The adhesive coating composition according to an embodiment of the present invention comprises: 40-95 wt % of a first component comprising an organic/inorganic composite in which inorganic nanoparticles are substituted in a water-soluble resin; 1-50 wt % of a second component comprising a composite metal phosphate; and 1-10 wt % of an additive.
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公开(公告)号：US12018181B2
公开(公告)日：2024-06-25
申请号：US16958194
申请日：2018-12-17
Applicant: POSCO
Inventor： Jung-Woo Kim , Bongwoo Ha , Taeyoung No
IPC: C09J11/04 , B32B7/12 , B32B15/01 , B32B37/12 , C09J11/06 , C09J123/06 , C09J125/06 , C09J133/08 , C09J163/00 , C09J175/04 , C09J183/04
CPC classification number: C09J11/04 , B32B7/12 , B32B15/011 , B32B37/12 , C09J11/06 , C09J123/06 , C09J125/06 , C09J133/08 , C09J163/00 , C09J175/04 , C09J183/04
Abstract: An exemplary embodiment of the present invention provides: an adhesive coating composition enabling adherence (coupling) of an electrical steel sheet without using conventional coupling methods such as welding, clamping, and interlocking; an electrical steel sheet laminate to which the same is applied; and a method for manufacturing the same.
An adhesive coating composition for an electrical steel sheet, according to an exemplary embodiment of the present invention, includes, on the basis of 100 wt % of total solids: 15 to 70 wt % of a first composition containing an organic resin and an organic/inorganic composite in which inorganic nanoparticles are substituted for an organic resin; 20 to 80 wt % of a second composition containing a metal phosphate and phosphoric acid; and 1 to 10 wt % of a coupling agent.
The coupling agent may contain one or more of a silane-based coupling agent, a titanate-based coupling agent, and an aluminate-based coupling agent.-
公开(公告)号：US11807922B2
公开(公告)日：2023-11-07
申请号：US16473047
申请日：2017-12-21
Applicant: POSCO
Inventor： Jung-Woo Kim , Bongwoo Ha , Taeyoung No , Won-Seog Bong
CPC classification number: C22C38/02 , B05D3/0254 , B05D7/14 , C08K3/08 , C08K3/22 , C09J5/06 , C09J11/04 , C09J11/08
Abstract: An embodiment of the present invention provides: an adhesive coating composition capable of attaching (coupling) an electrical steel sheet without using an existing coupling method, such as welding, clamping, or interlocking; an electrical steel sheet laminate employing the same; and a manufacturing method therefor. The adhesive coating composition according to an embodiment of the present invention comprises: 40-95 wt % of a first component comprising an organic/inorganic composite in which inorganic nanoparticles are substituted in a water-soluble resin; 1-50 wt % of a second component comprising a composite metal phosphate; and 1-10 wt % of an additive.
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