公开(公告)号：EP4435134A1

公开(公告)日：2024-09-25

申请号：EP22895943.3

申请日：2022-11-07

申请人： POSCO Co., Ltd

发明人： KONG, Jong-Pan ,  IM, Young-Roc

IPC分类号： C22C38/38 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C21D8/02 ,  B21C47/02 ,  C21D9/46

CPC分类号： B21C47/02 ,  C21D8/02 ,  C21D9/46 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38

摘要： The present invention relates to a cold rolled steel sheet and a manufacturing method therefor, and, more specifically, to a cold rolled steel sheet and a manufacturing method therefor, the cold rolled steel sheet having excellent strength and formability, which can be preferably applied to a structure member such as the members, seat rails, and pillars of a vehicle, and the like.

公开(公告)号：EP4431630A1

公开(公告)日：2024-09-18

申请号：EP22893082.2

申请日：2022-10-27

申请人： POSCO Co., Ltd

发明人： KIM, Dong-Wan ,  KOO, Min-Seo

IPC分类号： C22C38/38 ,  C22C38/28 ,  C22C38/26 ,  C22C38/32 ,  C22C38/00 ,  C21D1/18

CPC分类号： C22C38/00 ,  C22C38/32 ,  C22C38/26 ,  C22C38/38 ,  C22C38/28 ,  C21D1/18 ,  C22C38/002 ,  C22C38/06 ,  C22C38/02 ,  C21D6/008 ,  C21D6/005 ,  C22C38/04 ,  C21D9/46 ,  C21D6/002 ,  C22C38/001 ,  C22C38/22 ,  C21D8/0226 ,  C21D8/0263 ,  C22C38/24

摘要： The present invention relates to an ultrahigh-strength steel sheet with excellent bendability and stretch flangeability, and a manufacturing method therefor and, more specifically, to: a steel sheet having excellent bendability and stretch flangeability by using rapid low-temperature tempering, and having a high yield ratio and ultrahigh strength; and a manufacturing method therefor.

公开(公告)号：EP4431370A1

公开(公告)日：2024-09-18

申请号：EP22893111.9

申请日：2022-11-03

申请人： POSCO Co., Ltd

发明人： LEE, Gyu-Min ,  PARK, Jong-Cheol

IPC分类号： B62D25/02 ,  B62D21/15 ,  B60K1/04

CPC分类号： B62D21/15 ,  B62D25/02 ,  B60K1/04 ,  B62D25/025 ,  B62D21/157

摘要： The present invention provides a vehicle side sill comprising: a first side sill frame; a second side sill frame coupled to the first side sill frame so as to form a hollow portion together with the first side sill frame; a first reinforcing frame which is disposed in the hollow portion, and which has one side joined to the first side sill frame so as to form a first closed section; a diaphragm member which is joined to the first side sill frame and the second side sill frame so as to divide the hollow portion, and to which the other side of the first reinforcing frame is joined; and a second reinforcing frame disposed in the hollow portion, and joined to the diaphragm member so as form a second closed section, wherein the first reinforcing frame has a bending point with a shape of protruding outward from the first closed section.

公开(公告)号：EP4417660A1

公开(公告)日：2024-08-21

申请号：EP21960717.3

申请日：2021-10-14

申请人： POSCO Co., Ltd

发明人： CHO, Soo-Hyoun ,  SON, Won-Ho

IPC分类号： C09D175/04 ,  C09D5/00 ,  C09D7/40 ,  C23C22/00 ,  C23C2/26 ,  C23C2/06 ,  C23C2/40 ,  B05D7/14

CPC分类号： B05D7/14 ,  C09D5/00 ,  C09D7/40 ,  C09D175/04 ,  C23C2/06 ,  C23C2/26 ,  C23C2/40 ,  C23C22/00

摘要： The objective of the present invention is to provide a surface treatment composition capable of imparting excellent corrosive resistance, blackening resistance, alkali resistance, and an intrinsic surface color property on a ternary hot dip galvanized steel sheet. The present invention provides a surface treatment composition comprising, with respect to 100% by weight of the solid content of the composition: 70-90% by weight of a resin mixture including a high molecular weight polysilicon-modified polyurethane main resin, a low molecular weight polysilicon-modified polyurethane auxiliary resin, and an auxiliary epoxy resin; 0.5-10% by weight of a tarnish inhibitor; 0.5-10% by weight of an adhesion promoter; 0.5-10% by weight of an anticorrosive agent; 0.1-2% by weight of a coloring pigment; and 0.1-1% by weight of a pigment stabilizer.

公开(公告)号：EP4394075A1

公开(公告)日：2024-07-03

申请号：EP22887478.0

申请日：2022-10-19

申请人： POSCO Co., Ltd

发明人： KIM, Kyunghun ,  LEE, Munsoo ,  KIM, Hak ,  PARK, Jieon

IPC分类号： C22C38/34 ,  C22C38/22 ,  C22C38/28 ,  C22C38/26 ,  C22C38/00 ,  C21D8/02

CPC分类号： C22C38/22 ,  C22C38/00 ,  C22C38/34 ,  C22C38/26 ,  C22C38/28 ,  C21D8/02

摘要： Disclosed herein are ferritic stainless steel and a manufacturing method wherein the ferritic stainless steel has magnetic properties improved by controlling alloy components and a manufacturing process in order to increase responsiveness to an externally applied magnetic field. The ferritic stainless steel having improved magnetic properties according to an embodiment of the present invention may comprise, by % by weight, C: 0% (exclusive) to 0.02% (inclusive), N: 0% (exclusive) to 0.02% (inclusive), Si: 0.5% to 2.0% (both inclusive), Mn: 0.1% to 0.3% (both inclusive), Cr: 16.0% to 20.1% (both inclusive), Mo: 1.0% (exclusive) to 2.0% (inclusive), Ti: 0.1% to 0.4% (both inclusive), and the balance of iron (Fe) and inevitable impurities.

公开(公告)号：EP4386104A1

公开(公告)日：2024-06-19

申请号：EP22856100.7

申请日：2022-08-03

申请人： POSCO Co., Ltd

发明人： KIM, Yong-Woo ,  CHO, Hyun-Kwan ,  BYUN, Young-Sub ,  CHO, Nam-Young ,  KIM, In-Ho

IPC分类号： C22C38/44 ,  C22C38/46 ,  C22C38/54 ,  C21D8/02 ,  C21D9/46

CPC分类号： C22C38/44 ,  C22C38/54 ,  C22C38/46 ,  C21D9/46 ,  C21D8/02

摘要： The present invention relates to high-hardness bulletproof steel having excellent low-temperature toughness, and a manufacturing method therefor. More specifically, the present invention relates to high-hardness bulletproof steel having excellent low-temperature toughness, and a manufacturing method therefor, the high-hardness bulletproof steel being preferably usable in an armored vehicle, an explosion-proof structure and the like.

公开(公告)号：EP4386100A1

公开(公告)日：2024-06-19

申请号：EP22856192.4

申请日：2022-08-09

申请人： POSCO Co., Ltd

发明人： PARK, Junesoo ,  HONG, Jaewan ,  SONG, Dae Hyun

IPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/16 ,  C22C38/06 ,  C22C38/00 ,  C22C38/58 ,  C21D8/12

CPC分类号： C21D8/12 ,  C22C38/00 ,  C22C38/16 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/58 ,  H01F1/147

摘要： An exemplary embodiment of the present invention provides a non-oriented electrical steel sheet and a method for manufacturing same. The non-oriented electrical steel sheet comprises, by wt%, 2.5-4% of Si, 0.1-1.0% of Mn, 0.001-0.005% of S, 0.002-0.01% of Cu, and the remainder of Fe and inevitable impurities, wherein FGS (average grain size of grains in the lower 10% or less based on grain size among total grains) ≥ 15 µm.

公开(公告)号：EP4372475A1

公开(公告)日：2024-05-22

申请号：EP22842407.3

申请日：2022-07-12

申请人： POSCO Co., Ltd

发明人： PARK, Sun-Hong ,  KIM, Jin-Tae

IPC分类号： G03G15/00 ,  G03G21/00 ,  G03G15/04 ,  G03G15/16 ,  G03G15/08 ,  G03G15/20

CPC分类号： G03G15/08 ,  G03G21/00 ,  G03G15/04 ,  G03G15/16 ,  G03G15/00 ,  G03G15/20

摘要： The present invention relates to printing equipment for printing images such as letters and pictures on the surface of a metal material such as a steel plate, a printing method using same, and a printed metal material obtained therefrom.

公开(公告)号：EP4372474A1

公开(公告)日：2024-05-22

申请号：EP22842406.5

申请日：2022-07-12

申请人： POSCO Co., Ltd

发明人： PARK, Sun-Hong

IPC分类号： G03G15/00 ,  G03G15/16 ,  G03G21/00 ,  G03G15/04 ,  G03G15/08

CPC分类号： G03G15/08 ,  G03G21/00 ,  G03G15/04 ,  G03G15/16 ,  G03G15/00 ,  G03G15/01

摘要： The present invention relates to a technology for printing an image of a letter, a drawing, etc. on the surface of a metallic material and, specifically, to printing equipment and a printing method using same, which can stably print an image on the surface of a metallic material at high speed.

公开(公告)号：EP4372473A2

公开(公告)日：2024-05-22

申请号：EP22842400.8

申请日：2022-07-11

申请人： POSCO Co., Ltd

发明人： PARK, Sun-Hong

IPC分类号： G03G15/00 ,  G03G15/04 ,  G03G15/16 ,  G03G21/00 ,  G03G15/08 ,  G03G15/01

CPC分类号： G03G15/08 ,  G03G21/00 ,  G03G15/04 ,  G03G15/16 ,  G03G15/00 ,  G03G15/01

摘要： The present invention relates to printing equipment for printing images such as letters, pictures and the like on the surface of a metal material such as a steel sheet, a printing method using same, and a printed metal material obtained therefrom.