-
Patent Agency Ranking
公开(公告)号：US10804015B2
公开(公告)日：2020-10-13
申请号：US16152796
申请日：2018-10-05
Applicant: POSCO
Inventor： Oh-Yeoul Kwon , Won-Gul Lee , Chan-Hee Han , Hyun-Chul Park
Abstract: Provided is an electrical steel sheet comprising: a groove formed in a surface of a steel sheet, wherein the groove includes a bottom surface, a first side surface extending from the bottom surface, and a second side surface extending from the bottom surface in opposite to the first side surface, wherein the groove has a depth from the surface to the bottom surface, a width in a rolling direction of the steel sheet, and a length in a width direction of the steel sheet, and wherein the groove is formed through laser-irradiation and removal of melt produced by the laser-irradiation; an opening defined by the bottom surface, the first side surface and the second side surface; and a first solidification portion formed on the first side surface of the groove. The first solidification portion is formed by a solidification of part of the melt produced from the laser-irradiation.
-
公开(公告)号：US20140374137A1
公开(公告)日：2014-12-25
申请号：US14369571
申请日：2012-11-15
Applicant: POSCO
Inventor： Oh-Yeoul Kwon , Won-Gul Lee , Chan-Hee Han , Hyun-Chul Park
CPC classification number: H01B5/002 , B23K26/0643 , B23K26/0736 , B23K26/354 , B23K26/355 , C21D8/1288 , C21D8/1294 , C21D2201/05 , H01B1/02 , H01F3/02
Abstract: A method for manufacturing an electrical steel sheet is provided. The method for manufacturing an electrical steel sheet includes forming a groove having first and second side surfaces and a bottom surface by melting a surface of a steel sheet by laser irradiation, and forming an opening by removing melted byproducts of the steel sheet formed on the first and second side surfaces and the bottom surface through air blowing or suctioning to expose at least one surface of the first side surface, the second side surface, and the bottom surface in the forming of the groove.
Abstract translation: 提供一种电工钢板的制造方法。 制造电工钢板的方法包括通过激光照射来形成具有第一和第二侧表面的槽和底表面，并且通过除去第一和第二表面上形成的钢板的熔融副产物形成开口 第二侧表面和底表面通过空气吹送或抽吸，以在形成凹槽时露出第一侧表面，第二侧表面和底表面的至少一个表面。
-
公开(公告)号：US10023932B2
公开(公告)日：2018-07-17
申请号：US14758212
申请日：2013-12-26
Applicant: POSCO
Inventor： Min Soo Han , Min Serk Kwon , Soon-Bok Park , Chan-Hee Han
IPC: H01F1/04 , C21D9/46 , C21D8/12 , C21D9/56 , C23C8/02 , C23C8/26 , C23C8/80 , C21D3/04 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/60 , C23F11/02
Abstract: An oriented electrical steel sheet and a method of manufacturing the same are provided, and in a method of manufacturing an oriented electrical steel sheet including processes of producing a hot rolled plate by hot rolling a steel slab, performing or omitting hot rolled plate annealing, performing cold rolling, performing decarburization and nitride annealing, and performing final high temperature annealing, the decarburization and nitride annealing process is performed in a dew point range of 35-55° C., and in the final annealing process, a glassless additive including MgO is applied.
-
公开(公告)号：US20160133365A1
公开(公告)日：2016-05-12
申请号：US14963625
申请日：2015-12-09
Applicant: POSCO
Inventor： Kyu-Seok Han , Jae-Soo Lim , Byung-Deug Hong , Chan-Hee Han
CPC classification number: H01F1/01 , C21D8/12 , C21D8/1244 , C21D8/1272 , C21D2201/05 , C21D2211/004 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/60 , C30B29/52
Abstract: Provided is a grain-oriented electric steel sheet having superior magnetic property and to a grain-oriented electric steel sheet including 2.0 to 4.5 weight % of Si, 0.001 to 0.10 weight % of C, 0.010 weight % or lower of Al, 0.08 weight % or lower of Mn, 0.005 weight % or lower of N, 0.002 to 0.050 weight % of S, the remainder being Fe and other unavoidable impurities. The steel sheet having been subjected to secondary recrystallization using at least any one of grain boundary-segregated elementary S and an FeS precipitate as a grain growth inhibitor.
Abstract translation: 本发明提供一种磁性优异的晶粒取向电工钢板和包含Si：2.0〜4.5重量％，C：0.001〜0.10重量％，Al：0.010重量％以下，0.08重量％以下的晶粒取向电工钢板， 或更低的Mn，0.005重量％以下的N，0.002〜0.050重量％的S，余量为Fe等不可避免的杂质。 使用晶界分离元素S和FeS析出物中的至少任一种进行二次再结晶的钢板作为晶粒生长抑制剂。
-
公开(公告)号：US09997283B2
公开(公告)日：2018-06-12
申请号：US14963625
申请日：2015-12-09
Applicant: POSCO
Inventor： Kyu-Seok Han , Jae-Soo Lim , Byung-Deug Hong , Chan-Hee Han
IPC: C22C38/02 , C22C38/04 , C22C38/06 , C22C38/60 , C21D8/12 , H01F1/147 , H01F1/16 , H01F1/01 , C22C38/00 , C30B29/52
CPC classification number: H01F1/01 , C21D8/12 , C21D8/1244 , C21D8/1272 , C21D2201/05 , C21D2211/004 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/60 , C30B29/52
Abstract: Provided is a grain-oriented electric steel sheet having superior magnetic property and to a grain-oriented electric steel sheet including 2.0 to 4.5 weight % of Si, 0.001 to 0.10 weight % of C, 0.010 weight % or lower of Al, 0.08 weight % or lower of Mn, 0.005 weight % or lower of N, 0.002 to 0.050 weight % of S, the remainder being Fe and other unavoidable impurities. The steel sheet having been subjected to secondary recrystallization using at least any one of grain boundary-segregated elementary S and an FeS precipitate as a grain growth inhibitor.
-
-
-
-
Search Results
5
records
(took 0.016 seconds)
