公开(公告)号：US20240242863A1

公开(公告)日：2024-07-18

申请号：US18288286

申请日：2022-12-20

Applicant: POSCO Co., Ltd

Inventor： Hyung Don Joo ,  Jaewan Hong ,  Yong-Soo Kim ,  Junesoo Park ,  Yunsu Kim

IPC: H01F1/147 ,  C21D8/12 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/16 ,  C22C38/60

CPC classification number: H01F1/14783 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1261 ,  C21D8/1277 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/16 ,  C22C38/60 ,  C22C2202/02

Abstract: A non-oriented electrical steel sheet according to an exemplary embodiment of the present invention contains, by wt %: 0.005% or less (excluding 0%) of C, 1.5 to 3.0% of Si, 0.4 to 1.5% of Mn, 0.005% or less (excluding 0%) of S, 0.0001 to 0.7% of Al, 0.005% or less (excluding 0%) of N, 0.005% or less (excluding 0%) of Ti, 0.001 to 0.02% of Cu, 0.01 to 0.05% of Sb, 0.001 to 0.1% of Sn, and 0.005 to 0.07% of P, wherein contents of Mn, Si, and Al satisfy the following [Expression 1], contents of Sb, Sn, and P satisfy the following [Expression 2], the non-oriented electrical steel sheet contains a balance of Fe and unavoidably incorporated impurities, and the number of (Mn, Cu)S precipitates of 0.5 μm or less per area is 1/μm3 or less:







0.19
≤


[
Mn
]

/

(


[
Si
]

+

150
×

[
Al
]



)


≤
0.35




[

Expression
⁢

1

]













1
/

2
*

⁢
Sn

公开(公告)号：US20240186041A1

公开(公告)日：2024-06-06

申请号：US18285178

申请日：2022-12-20

Applicant: POSCO Co., Ltd

Inventor： Ohyeoul Kwon ,  Woosin Kim ,  Kyuseok Han

IPC: H01F1/18 ,  C21D1/74 ,  C21D6/00 ,  C21D8/12 ,  C21D9/46 ,  C21D10/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/34 ,  C22C38/60

CPC classification number: H01F1/18 ,  C21D1/74 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1261 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C21D10/005 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/34 ,  C22C38/60 ,  C21D2201/05 ,  C22C2202/02

Abstract: According to an exemplary embodiment of the present invention, a grain oriented electrical sheet includes: a plurality of deformed parts formed on a surface of the electrical sheet along a rolling direction, in which an interval between the deformed parts is changed over an entire length of the sheet in response to an index Ks of sensitivity calculated by Equation 1 below, and at least two areas having a different interval between the deformed parts exist.


Ks=(0.7×Ds+0.3×B8)/10  [Equation 1]

(in Equation 1, Ks denotes an index of sensitivity, Ds denotes a particle size of grain (mm), and B8 denotes a magnetic flux density T measured at magnetic field strength of 800 A/m.)

公开(公告)号：US20240182116A1

公开(公告)日：2024-06-06

申请号：US18287785

申请日：2022-04-26

Applicant: POSCO CO., LTD

Inventor： Hong-Woo Lee ,  Jaehyun Kim ,  Dong-Yoon Seok

IPC: B62D25/02 ,  B62D21/03 ,  B62D27/02 ,  B62D29/00

CPC classification number: B62D25/025 ,  B62D21/03 ,  B62D27/02 ,  B62D29/008

Abstract: A vehicle body according to an embodiment of the present invention may comprise: a side sill extending in the lengthwise direction of a vehicle; and a cross member extending in the widthwise direction of the vehicle and coupled at an end thereof to the side sill, wherein: the side sill comprises an inner panel, an outer panel coupled to the inner panel, an outer panel coupled to the inner panel, and a reinforcement member disposed between the inner panel and the outer panel; the inner panel includes an inclined surface formed to have an ascending slope from the inner side to the outer side of the vehicle; the end of the cross member is formed to have a slope corresponding to the inclined surface and is coupled to the outer surface of the inclined surface; and one end of the reinforcement member is coupled to the inner surface of the inclined surface.

公开(公告)号：US20240159222A1

公开(公告)日：2024-05-16

申请号：US18284688

申请日：2022-04-05

Applicant: POSCO CO., LTD

Inventor： Sanghun SON ,  Myunghyun NOH ,  Kyu-sik PARK ,  Eungsoo KIM

IPC: F03D13/25

CPC classification number: F03D13/256 ,  F05B2240/93 ,  F05B2240/95

Abstract: Disclosed herein are a floating platform and a floating offshore wind power generator with the same. The floating offshore wind power generator according to an embodiment includes a power generator disposed on an upper portion and configured to perform a wind power generation action, and a floating platform configured to support the power generator while floating on the sea. The floating platform includes a plurality of floats provided in the form of a hollow cylindrical shape and erected in a vertical direction, a connecting beam connecting and binding between the plurality of the floats, and a strake having a spiral shape and provided on an outer circumference of a lower region of each of floats while avoiding a connecting position of the connecting beam.

公开(公告)号：US20240139669A1

公开(公告)日：2024-05-02

申请号：US18288515

申请日：2022-11-10

Applicant: POSCO CO., LTD ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

Inventor： Chi-Kyu Ahn ,  Chang-Houn Rhee ,  Gook-Hee Kim ,  Man-Su Lee ,  Hai-Woong Park ,  Beom-Sik Kim ,  Seong-Min Son

IPC: B01D53/047 ,  C01B3/04 ,  C01B3/56

CPC classification number: B01D53/047 ,  C01B3/047 ,  C01B3/56 ,  B01D2253/102 ,  B01D2253/116 ,  B01D2256/16 ,  B01D2257/406 ,  C01B2203/0277 ,  C01B2203/043 ,  C01B2203/0465 ,  C01B2203/1205

Abstract: A method for preparing hydrogen from ammonia by using pressure swing adsorption (PSA) is provided. The method for preparing hydrogen from ammonia, of the present invention, comprises the steps of: generating hydrogen and nitrogen from ammonia gas through a high-temperature reaction by using a catalyst; performing purification by selectively adsorbing unreacted ammonia gas from a gas containing unreacted ammonia and low-purity hydrogen and nitrogen, which are supplied through the high-temperature reaction and cooled; and performing purification by separating high-purity hydrogen from the gas consisting of low-purity hydrogen and nitrogen, wherein purification is carried out by using a carbon molecular sieve (CMS) adsorbent so as to desorb the unreacted ammonia gas through PSA.

公开(公告)号：US11970749B2

公开(公告)日：2024-04-30

申请号：US18171305

申请日：2023-02-17

Applicant: POSCO CO., LTD

Inventor： Tae-Jin Song ,  Jeong-Eun Kim ,  Chang-Sik Choi

IPC: C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

CPC classification number: C21D8/0226 ,  C21D8/0205 ,  C21D8/0215 ,  C21D8/0247 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C21D2211/001

Abstract: Provided is a method of manufacturing a hot rolled steel sheet having excellent formability and fatigue properties, including: preparing a slab including, by weight %, 0.3 to 0.8% of carbon C, 13 to 25% of manganese (Mn), 0.1 to 1.0% of vanadium (V), 0.005 to 2.0% of silicon (Si), 0.01 to 2.5% of aluminum (Al), 0.03% or less of phosphorus (P), 0.03% or less of sulfur (S), 0.04% or less (excluding 0%) of nitrogen (N), and a remainder of iron (Fe) and inevitable impurities; heating the slab to 1050 to 1250° C.; finish rolling, the slab heated in the heating, at a temperature of not lower than a recrystallization temperature of a region having an average V concentration and not higher than a recrystallization temperature of a region having twice the average V concentration, to obtain a hot rolled steel sheet; and coiling the hot-rolled steel sheet at 50 to 700° C.

公开(公告)号：US20240117459A1

公开(公告)日：2024-04-11

申请号：US18267237

申请日：2021-11-18

Applicant: POSCO CO., LTD.

Inventor： Choongyeol LEE

IPC: C21D9/52 ,  C21D1/84 ,  C21D8/06 ,  C22C38/02 ,  C22C38/04

CPC classification number: C21D9/525 ,  C21D1/84 ,  C21D8/065 ,  C22C38/02 ,  C22C38/04 ,  C21D2211/003 ,  C21D2211/009

Abstract: A steel wire with improved drawability, and a manufacturing method therefor are disclosed. A steel wire according to the present invention comprises, by wt %, 0.52-0.69% of C, 0.3-0.8% of Mn, 0.1-0.5% of Si, and the balance of Fe and inevitable impurities, wherein the carbon content of cementite in pearlite is 7 at. % or more, and the following formula (1) is satsified.


[TS]+exp(ε)*10

公开(公告)号：US11904572B2

公开(公告)日：2024-02-20

申请号：US18121249

申请日：2023-03-14

Applicant: POSCO CO., LTD

Inventor： Jin-Keun Oh ,  Il-Ryoung Sohn ,  Seong-Woo Kim ,  Jeom-Soo Shin

IPC: B32B15/01 ,  C22C21/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40 ,  C23C2/26

CPC classification number: B32B15/012 ,  C22C21/02 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/12 ,  C23C2/26 ,  C23C2/28 ,  C23C2/29 ,  C23C2/40 ,  Y10T428/12757

Abstract: The present disclosure relates to an aluminum-based plated steel that is provided for vehicles by hot forming, an aluminum-based alloy plated steel manufactured using the same, and method of manufacturing thereof.

公开(公告)号：US20240052454A1

公开(公告)日：2024-02-15

申请号：US18268041

申请日：2021-12-14

Applicant: POSCO CO., LTD

Inventor： Youngsoo CHUN ,  Seok-hwan CHOI ,  Kyoungsik KIM ,  Myungsoo CHOI

IPC: C21D9/52 ,  B21F3/00 ,  C22C38/14 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/06 ,  C21D6/00 ,  C21D1/18

CPC classification number: C21D9/525 ,  B21F3/00 ,  C22C38/14 ,  C22C38/04 ,  C22C38/02 ,  C22C38/002 ,  C21D8/065 ,  C21D6/005 ,  C21D6/008 ,  C21D1/18 ,  C21D2211/001

Abstract: Disclosed are high-strength wire rods and parts, having improved delayed fracture resistance, for use in bolts, and a methods for manufacturing the same. The high-strength wire rod, having improved delayed fracture resistance, for use in bolts according to the present disclosure contains, by wt %, 0.15-0.30% of C, 0.05-0.35% of Si, 0.95-1.35% of Mn, 0.030% or less of P, 0.030% or less of S, 0.005-0.030% of Ti, 0.0010-0.0040% of B, and Fe and inevitable impurities as the balance.

公开(公告)号：US20240043949A1

公开(公告)日：2024-02-08

申请号：US18268057

申请日：2021-12-13

Applicant: POSCO CO., LTD

Inventor： Yo-sep YANG ,  Jaeseung LEE ,  Je-wook JANG ,  Manjae LEE

IPC: C21D8/08 ,  C22C38/02 ,  C22C38/04 ,  C22C38/00 ,  C21D9/52 ,  C21D8/02 ,  C21D8/06

CPC classification number: C21D8/08 ,  C22C38/02 ,  C22C38/04 ,  C22C38/002 ,  C21D9/525 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/065 ,  C21D2211/005 ,  C21D2211/009

Abstract: Provided is a wire rod for a concrete reinforcing steel fiber, a steel fiber, and a manufacturing method therefor. According to one disclosed embodiment of a wire rod for a concrete reinforcing steel fiber, the wire rod comprises, by weight, C: 0.01 to 0.04%, Si: 0.07 to 0.3%, Mn: 1.0 to 2.0%, P: 0.1 to 0.3% and the balance of Fe and other unavoidable impurities, wherein, when the radius of the wire rod is r, in a region from the center of a cross section perpendicular of the longitudinal direction to 0.95*r, the area fraction of ferrite is 90% or more, and the remainder comprises pearlite, wherein the average grain size of the ferrite may be 30 μm or less and the colony size of the pearlite may be 10 μm or less.