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公开(公告)号：US20220119901A1
公开(公告)日：2022-04-21
申请号：US17277879
申请日：2019-05-23
申请人： POSCO
发明人： Se-Min Park , Seong-Cheol Hong , Hyun-Chul Park , Jung-Moon Kang , Chang-Ho Kim , Won-Gul Lee , Ki-Young Min
IPC分类号： C21D8/02
摘要： A grain-orientation electrical steel sheet according to an exemplary embodiment of the present invention includes a linear groove formed in a direction intersecting with the rolling direction, the groove includes the gradient section and the uniform section on a cross section including the transverse direction of the groove and the rolling surface normal direction of the steel sheet, and a length of the gradient section (GS) and the length of the uniform section (US) satisfy Equation 1 below. 0.1≤[GSL]/[USL]≤0.5 [Equation 1] In Equation 1, [GSL] represents the length (mm) of the gradient section and [USL] represents the length (mm) of the uniform section.
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公开(公告)号：US11313011B2
公开(公告)日：2022-04-26
申请号：US16472484
申请日：2017-12-20
申请人： POSCO
发明人： Oh-Yeoul Kwon , Ki-Young Min , Se-Min Park , Jong-Tae Park , Seong-Cheol Hong
IPC分类号： C21D10/00 , B23K26/0622 , B23K26/364 , B23K26/073 , C21D3/04 , C21D6/00 , C21D8/12 , C21D9/46 , B23K103/04
摘要： A method for refining magnetic domains of a grain-oriented electrical steel sheet according to an exemplary embodiment of the present invention includes: a step of preparing a grain-oriented electrical steel sheet; and a step of forming a groove by irradiating a quasi-continuous laser beam of which a duty is from 98.0 to 99.9% on a surface of the grain-oriented electrical steel sheet.
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公开(公告)号：US12116645B2
公开(公告)日：2024-10-15
申请号：US17277879
申请日：2019-05-23
申请人： POSCO
发明人： Se-Min Park , Seong-Cheol Hong , Hyun-Chul Park , Jung-Moon Kang , Chang-Ho Kim , Won-Gul Lee , Ki-Young Min
IPC分类号： C21D8/02
CPC分类号： C21D8/0226 , C21D8/0205 , C21D8/0236 , C21D2201/05
摘要： A grain-orientation electrical steel sheet according to an exemplary embodiment of the present invention includes a linear groove formed in a direction intersecting with the rolling direction, the groove includes the gradient section and the uniform section on a cross section including the transverse direction of the groove and the rolling surface normal direction of the steel sheet, and a length of the gradient section (GS) and the length of the uniform section (US) satisfy Equation 1 below.
0.1≤[GSL]/[USL]≤0.5 [Equation 1]
In Equation 1, [GSL] represents the length (mm) of the gradient section and [USL] represents the length (mm) of the uniform section.-
公开(公告)号：US20230060058A1
公开(公告)日：2023-02-23
申请号：US17785703
申请日：2020-12-09
申请人： POSCO
发明人： Se-Min Park , Chang-Ho Kim , Ki-Young Min
摘要： A grain-oriented electrical steel sheet according to an exemplary embodiment of the present invention includes: a linear groove formed in one or both surfaces of the electrical steel sheet in a direction intersecting with a rolling direction; and a linear thermal shock portion formed in the one or both surfaces of the electrical steel sheet in a direction intersecting with the rolling direction. An angle between a longitudinal direction of the groove and a longitudinal direction of the thermal shock portion is 1 to 5°.
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公开(公告)号：US11772189B2
公开(公告)日：2023-10-03
申请号：US16957932
申请日：2018-12-17
申请人： POSCO
发明人： Se-Min Park , Jae Soo Kim , Ki-Young Min , Seong-Cheol Hong , Won-Gul Lee
IPC分类号： B23K26/00 , B23K26/356 , B23K26/364 , B23K103/04
CPC分类号： B23K26/0006 , B23K26/356 , B23K26/364 , B23K2103/04
摘要： A grain-oriented electrical steel sheet according to an embodiment of the present invention includes: a groove on a line formed on one surface of an electrical steel sheet in a direction crossing a rolling direction; and a thermal shock portion on a line formed on one surface of the electrical steel sheet in the direction crossing the rolling direction, wherein a distance between the groove and the thermal shock portion is 1 mm or less.
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公开(公告)号：US20230027665A1
公开(公告)日：2023-01-26
申请号：US17777471
申请日：2020-11-17
申请人： POSCO
发明人： Seong-Cheol Hong , Ki-Young Min , Dong-Geun Kim , Oho-Cheal Kwon , Chang-Ho Kim
摘要： A foreign substance capturing apparatus according to an embodiment of the present invention may comprise: a capturing body unit having an inlet port for introducing the air including magnetic foreign substances and an outlet port for discharging the air from which the magnetic foreign substances have been removed; and a magnetic isolation unit connected to the capturing body unit, including a magnetic member for isolating, by an attractive force, the magnetic foreign substances from the air flowing in the capturing body unit, and provided with a non-magnetic member surrounding the magnetic member.
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