公开(公告)号：US20240011120A1

公开(公告)日：2024-01-11

申请号：US18267364

申请日：2021-12-07

申请人： POSCO

发明人： Ki-Cheol Kang ,  Dae-Young Kang ,  Nam-A Kim ,  Myung-Soo Kim

IPC分类号： C21D9/46 ,  C22C38/38 ,  C22C38/34 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/22 ,  C22C38/60 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/02 ,  C22C38/04 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C21D1/84 ,  C21D1/74 ,  C21D1/18 ,  B32B15/01 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

CPC分类号： C21D9/46 ,  C22C38/38 ,  C22C38/34 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/22 ,  C22C38/60 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/02 ,  C22C38/04 ,  C22C38/008 ,  C22C38/002 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/0278 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D1/84 ,  C21D1/74 ,  C21D1/18 ,  B32B15/013 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C21D2211/005

摘要： According to one aspect of the present invention, a high-strength hot-dip galvanized steel sheet having an excellent surface quality and spot weldability, and a manufacturing method therefor may be provided.

公开(公告)号：US20240360541A1

公开(公告)日：2024-10-31

申请号：US18688709

申请日：2022-09-27

申请人： POSCO CO., LTD

发明人： Tae-Chul Kim ,  Sung-Joo Kim ,  Myung-Soo Kim ,  Bong-Hwan Yoo ,  Yong-Kyun Cho ,  Il-Ryoung Sohn

IPC分类号： C23C2/06 ,  B32B15/01 ,  C22C18/04 ,  C23C2/20 ,  C23C2/28 ,  C23C2/40

CPC分类号： C23C2/06 ,  B32B15/013 ,  C22C18/04 ,  C23C2/20 ,  C23C2/29 ,  C23C2/40

摘要： The present invention provides a Zn—Mg—Al plated steel sheet having excellent in corrosion resistance and bendability, and a method for manufacturing same. And more specifically, the present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance, bendability, and plating adhesion, and a method for manufacturing the same.

公开(公告)号：US20240352563A1

公开(公告)日：2024-10-24

申请号：US18681397

申请日：2022-11-01

申请人： POSCO CO., LTD

发明人： Tae-Il SO ,  Sang-Deok KANG

IPC分类号： C22C38/16 ,  C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14

CPC分类号： C22C38/16 ,  C21D8/0205 ,  C21D8/0226 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C21D2211/005 ,  C21D2211/009

摘要： The present invention relates to: a steel material having high strength and excellent impact toughness, the steel material being usable for a land wind power generator and the like; and a method for manufacturing same.

公开(公告)号：US12123094B2

公开(公告)日：2024-10-22

申请号：US17297757

申请日：2019-11-29

申请人： POSCO CO., LTD

发明人： Jin-Keun Oh ,  Seong-Woo Kim ,  Yeol-Rae Cho ,  Sang-Heon Kim

IPC分类号： B32B15/10 ,  B32B15/01 ,  C21D9/48 ,  C22C21/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40

CPC分类号： C23C2/12 ,  B32B15/012 ,  C21D9/48 ,  C22C21/02 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/28 ,  C23C2/29 ,  C23C2/40

摘要： The present invention provides an aluminum-based plated steel plate used in hot-press forming, the steel plate comprising: a base steel plate; and a plating layer formed on the base steel plate, wherein the plating layer comprises: an alloying layer formed on the surface of the base steel plate and including one or more of Fe 3Al, FeAl(Si), Fe 2Al 5, and FeAl 3; and an aluminum layer formed on the alloying layer and having a thickness less than 10% of the thickness of the plating layer, and the plating layer has a thickness of 5-20 μm and an oxygen content of 10 weight % or less, as measured by GDS, at a depth of 0.1 μm from the surface of the plating layer.

公开(公告)号：US12123066B2

公开(公告)日：2024-10-22

申请号：US16347704

申请日：2017-11-07

申请人： POSCO CO., LTD ,  POSTECH ACADEMY-INDUSTRY FOUNDATION

发明人： Sea-Woong Lee ,  Bruno C. De Cooman ,  Kyoo-Young Lee ,  Eun-Jung Seo ,  Seon-Jong Lee ,  Joo-Hyun Ryu ,  Won-Hwi Lee

IPC分类号： C21D9/46 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/38 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

CPC分类号： C21D9/46 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0278 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/38 ,  C23C2/0224 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008

摘要： One aspect of the present invention relates to an ultrahigh-strength steel sheet having an excellent yield ratio, comprising, by wt %, 0.3-0.5% of C, 2.0% (excluding 0%) of Si, 3.0-6.5% of Mn, 0.02% or less of P, 0.01% or less of S, 0.01-3.0% of Al, 0.02% or less (excluding 0%) of N, and the balance of Fe and other inevitable impurities, and a microstructure comprises 5-30% of remaining austenite by area fraction and comprises 5% or less of secondary martensite.

公开(公告)号：US20240336987A1

公开(公告)日：2024-10-10

申请号：US18293195

申请日：2022-11-25

申请人： POSCO Co., Ltd

发明人： Hak-Cheol LEE

IPC分类号： C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14

CPC分类号： C21D8/0226 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C21D2211/001 ,  C21D2211/002 ,  C22C2202/00

摘要： The present invention relates to a steel plate for use in ships and the like, which has excellent toughness in a heat-affected zone (HAZ), even when a steel material having high strength and high ductility is welded with a certain amount of heat input or more, and to a method for manufacturing same.

公开(公告)号：US20240301237A1

公开(公告)日：2024-09-12

申请号：US18268806

申请日：2021-12-16

申请人： POSCO Co., Ltd

发明人： Bongwoo Ha ,  Jungwoo Kim ,  Kang Seo ,  Daegyu Kang ,  Taeyoung No ,  Donggyu Lee ,  Gyeongryeol Park

IPC分类号： 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分类号： 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

摘要： 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%.

公开(公告)号：US12084731B2

公开(公告)日：2024-09-10

申请号：US17294197

申请日：2019-11-01

申请人： POSCO

发明人： Chang Kuk Ko ,  Myoung Kyun Shin

IPC分类号： C21B13/14 ,  B01D47/00 ,  B01D53/18 ,  C21B13/00 ,  F27B15/02

CPC分类号： C21B13/146 ,  B01D47/00 ,  B01D53/18 ,  C21B13/0033 ,  C21B13/0073 ,  C21B13/14 ,  F27B15/02 ,  C21B2100/44 ,  C21B2100/66 ,  C21B2300/02

摘要： A device for manufacturing molten iron is provided. The device for manufacturing the molten iron includes a multi-stage fluidized reduction furnace for reducing a powdered iron ore including hematite and limonite, a melting gas furnace connected to the fluidized reduction furnace through an ore conduit and a gas conduit, a fluidized bed oxidation furnace for oxidizing magnetite to be converted into hematite through steam provided from the fluidized reduction furnace, and a hydrogen processing unit for processing hydrogen generated by the oxidation reaction of magnetite in the fluidized bed oxidation furnace.

公开(公告)号：US20240287362A1

公开(公告)日：2024-08-29

申请号：US18268780

申请日：2021-12-16

申请人： POSCO Co., Ltd

发明人： Bongwoo HA ,  Jungwoo KIM ,  Donggyu LEE ,  Eunjung KO ,  Taeyoung NO ,  Gyeongryeol PARK

IPC分类号： C09J175/04 ,  B32B7/12 ,  B32B15/04 ,  B32B15/18 ,  C08G18/48 ,  C08G18/72

CPC分类号： C09J175/04 ,  B32B7/12 ,  B32B15/043 ,  B32B15/18 ,  C08G18/4825 ,  C08G18/724 ,  B32B2255/06 ,  B32B2255/26 ,  B32B2307/748

摘要： The present disclosure relates to a bonding composition for an electrical steel sheet, and a steel sheet and a laminate to which same is applied, the bonding composition comprising polyurethane formed by reacting a diisocyanate monomer and a polyol, wherein the diisocyanate monomer can comprise an aromatic diisocyanate monomer and an aliphatic diisocyanate monomer.

公开(公告)号：US12068424B2

公开(公告)日：2024-08-20

申请号：US17619999

申请日：2020-05-29

申请人： POSCO

发明人： Young-Jun Park

IPC分类号： H01L31/052 ,  B32B15/18 ,  H01B3/30 ,  C09D5/00 ,  C09D7/61 ,  C09D175/04 ,  C09D177/00

CPC分类号： H01L31/052 ,  B32B15/18 ,  H01B3/30 ,  C09D5/00 ,  C09D7/61 ,  C09D175/04 ,  C09D177/00

摘要： Provided is a thermally conductive and electrically insulating paint composition, and an exterior steel sheet for a solar cell, comprising same. Specifically, the thermally conductive and electrically insulating paint composition includes: a first mixture, which comprises a thermoplastic resin and a thermally conductive filler, a polymer dispersant, and a first hydrocarbon-based solvent; and an exterior steel sheet for a solar cell, comprising: a steel sheet on which a heat dissipation layer is formed on one surface thereof; and a thermally conductive and electrically insulating coating layer which comprises a thermoplastic resin, a thermally conductive filler and a polymer dispersant, and which is formed on the other surface of the steel sheet, wherein the thermally conductive filler is dispersed in the coating layer in a form of being encompassed by the polymer dispersant.