公开(公告)号：US11031162B2

公开(公告)日：2021-06-08

申请号：US15529870

申请日：2014-12-08

Applicant: POSCO

Inventor： Hyun-Seok Ko ,  Kyu-Seok Han ,  Hyung-Ki Park ,  Jin-Wook Seo ,  Jae-Soo Lim ,  Hyung Don Joo

IPC: H01F1/147 ,  C22C38/02 ,  C22C38/00 ,  C22C38/04 ,  C21D9/46 ,  C21D8/12 ,  C21D3/04

Abstract: Disclosed are an oriented electrical steel sheet and a manufacturing method thereof. An exemplary embodiment of the present invention provides a method of manufacturing an oriented electrical steel sheet, including: providing a slab including Si at 1.0 to 4.0 wt %, C at 0.1 to 0.4 wt %, and the remaining portion including Fe and other inevitably incorporated impurities; reheating the slab; producing a hot rolled steel sheet by hot rolling the slab; performing annealing of the hot rolled steel sheet; cold rolling the annealed hot rolled steel sheet; decarburizing and annealing the cold rolled steel sheet; cold rolling the decarburized and annealed steel sheet; and final annealing the cold rolled steel sheet.

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.

公开(公告)号：US12040110B2

公开(公告)日：2024-07-16

申请号：US17318407

申请日：2021-05-12

Applicant: POSCO CO., LTD

Inventor： Hyun-Seok Ko ,  Kyu-Seok Han ,  Hyung-Ki Park ,  Jin-Wook Seo ,  Jae-Soo Lim ,  Hyung Don Joo

IPC: C21D9/46 ,  C21D3/04 ,  C21D8/12 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  H01F1/147

CPC classification number: H01F1/14775 ,  C21D3/04 ,  C21D8/12 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1261 ,  C21D8/1266 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04

Abstract: Disclosed are an oriented electrical steel sheet and a manufacturing method thereof. An exemplary embodiment of the present invention provides a method of manufacturing an oriented electrical steel sheet, including: providing a slab including Si at 1.0 to 4.0 wt %, C at 0.1 to 0.4 wt %, and the remaining portion including Fe and other inevitably incorporated impurities; reheating the slab; producing a hot rolled steel sheet by hot rolling the slab; performing annealing of the hot rolled steel sheet; cold rolling the annealed hot rolled steel sheet; decarburizing and primary annealing the cold rolled steel sheet; cold rolling the decarburized and annealed steel sheet; and secondary annealing the cold rolled steel sheet.

公开(公告)号：US10760141B2

公开(公告)日：2020-09-01

申请号：US15536254

申请日：2014-12-16

Applicant: POSCO

Inventor： Hyung Don Joo ,  Hyung-Ki Park ,  Jin-Wook Seo ,  Kyu-Seok Han ,  Jae-Soo Lim ,  Hyun-Seok Ko

IPC: C21D9/46 ,  C22C38/02 ,  C21D8/12 ,  C21D6/00 ,  C21D8/00 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06

Abstract: An oriented electrical steel sheet includes Ba at about 0.005 wt % to about 0.5 wt % inclusive, Y at about 0.005 wt % to about 0.5 wt % inclusive, or a composite of Ba and Y at about 0.005 wt % to about 0.5 wt % inclusive, the remainder including Fe and impurities, based on 100 wt % of a total composition of a base steel sheet thereof.

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

IPC: H01F1/01 ,  C22C38/00 ,  C22C38/04 ,  C22C38/02 ,  C30B29/52 ,  C22C38/06

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。