公开(公告)号：EP3901321B1

公开(公告)日：2024-10-02

申请号：EP21174102.0

申请日：2017-11-23

IPC: C23C2/40 ,  C23C2/12 ,  C23C2/26 ,  C23C2/02 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/06 ,  B32B15/01 ,  B21D22/02 ,  C23C2/06 ,  C22C18/00 ,  C21D8/02 ,  C22C38/04 ,  C22C38/02 ,  C22C21/02 ,  C22C21/10 ,  C22C18/04

CPC classification number: B21D22/022 ,  B32B15/012 ,  B32B15/013 ,  C21D8/0226 ,  C23C2/06 ,  C23C2/12 ,  C23C2/26 ,  C23C2/40 ,  C22C18/04 ,  C22C21/02 ,  C22C21/10 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C21D2211/00120130101 ,  C21D2211/00520130101 ,  C21D2211/00920130101 ,  C22C18/00 ,  C21D8/0263 ,  C21D8/0278 ,  B23K2103/0420180801 ,  C21D1/673 ,  C21D8/005 ,  C21D9/0068 ,  C23C2/024 ,  C23C2/28 ,  C23C2/0224 ,  C23C2/02

公开(公告)号：EP3892747B1

公开(公告)日：2024-09-25

申请号：EP19891746.0

申请日：2019-06-11

IPC: C23C2/00 ,  B05B1/14 ,  C23C2/40 ,  C23C2/28 ,  C23C2/26 ,  B05B1/02 ,  B05B1/20 ,  B05B1/26 ,  B05B9/03 ,  B05B13/02

CPC classification number: C23C2/40 ,  B05B1/205 ,  B05B9/035 ,  B05B1/02 ,  B05B14/30 ,  B05B13/0207 ,  B05B1/262 ,  C23C2/004 ,  C23C2/00344 ,  C23C2/0038 ,  C23C2/29 ,  C23C2/0035 ,  C23C2/26

公开(公告)号：EP4414475A1

公开(公告)日：2024-08-14

申请号：EP23747032.3

申请日：2023-01-26

Applicant: NIPPON STEEL CORPORATION

Inventor： MITSUNOBU, Takuya ,  URANAKA, Masaaki ,  MATSUBA, Masahiro ,  NAKAMURA, Toyomitsu

IPC: C23C2/06 ,  B23K35/30 ,  C22C18/04 ,  C22C21/10 ,  C22C38/00 ,  C22C38/04 ,  C23C2/12 ,  C23C2/26 ,  C23C2/02 ,  B32B15/01 ,  C23C2/20 ,  C23C2/28 ,  C23C30/00 ,  C23C2/40 ,  C22C18/00 ,  C22C21/06

CPC classification number: B23K35/30 ,  C22C18/04 ,  C22C21/10 ,  C22C38/00 ,  C22C38/04 ,  C23C2/06 ,  C23C2/12 ,  C23C2/26 ,  C23C2/0224 ,  C23C2/29 ,  C23C2/20 ,  C23C30/00 ,  C23C2/40 ,  C22C21/06 ,  C22C18/00 ,  B32B15/012 ,  B32B15/013 ,  C22C38/02 ,  C22C38/16

Abstract: To more reliably suppress LME and blowhole formation while maintaining excellent corrosion resistance.
A plated steel sheet according to the present invention, includes: a steel sheet as a base material; a plating layer located on at least part of a surface of the steel sheet; and an oxide layer located on a surface of the plating layer, where a chemical composition of the plating layer is made up of prescribed components, and Zn and impurities as the balance, and when a position at a depth of 5 nm from an uppermost surface of the oxide layer is observed by X-ray photoelectron spectroscopy (XPS), a value of an intensity ratio ([Al-O] + [Mg-O])/[Zn-O]) calculated from intensity of peaks respectively attributed to an Al-O bond, an Mg-O bond, and a Zn-O bond is 5.0 or more.

公开(公告)号：EP4407064A1

公开(公告)日：2024-07-31

申请号：EP22903844.3

申请日：2022-10-11

Applicant: JFE Steel Corporation

Inventor： ITO, Yu ,  TAKAHASHI, Hideyuki ,  YAMASHIRO, Kenji ,  KOYAMA, Takumi ,  KAKU, Yoshihiko

IPC: C23C2/20 ,  B05B1/04 ,  C23C2/00 ,  B05B1/00 ,  C23C2/40

CPC classification number: C23C2/20 ,  C23C2/00 ,  C23C2/003 ,  C23C2/40 ,  B05B1/044 ,  B05B1/005 ,  B05B15/50

Abstract: The present invention is directed to a gas wiping nozzle that can easily remove molten metal splashes and can provide a beautiful steel sheet with no linear mark defects, and a method for manufacturing a hot-dip metal-coated steel strip and a gas wiping nozzle.
Provided are: a gas wiping nozzle that adjusts the coating weight of a molten metal on the surface of a steel strip pulled up from a molten metal bath, wherein at least the surface of the gas wiping nozzle is made of a ceramic, and the arithmetic mean roughness Ra and the peak count PPI of the gas wiping nozzle satisfy Formula (1); and a method for manufacturing a hot-dip metal-coated steel strip using the gas wiping nozzle. PPI>c1×Ra+c2
PPI: peak count (the number of peaks per inch)
Ra: arithmetic mean roughness [µm]
c1 and c2: constant

公开(公告)号：EP4393027A1

公开(公告)日：2024-07-03

申请号：EP22734690.5

申请日：2022-06-21

Applicant: ArcelorMittal

Inventor： SANZEY, Pascale ,  MACHADO AMORIM, Tiago ,  KRIM, Tarek ,  DOSDAT, Laurence ,  BESSON, Aurélie

IPC: H01M50/204 ,  H01M50/276 ,  H01M50/282 ,  C23C2/06 ,  C23C2/40

CPC classification number: H01M50/204 ,  H01M50/276 ,  H01M50/282 ,  C23C2/06 ,  C23C2/40 ,  C23C30/00 ,  C23C22/08 ,  C23C2222/1020130101 ,  C23C22/10 ,  Y02E60/10

公开(公告)号：EP4116457B1

公开(公告)日：2024-05-08

申请号：EP20923408.7

申请日：2020-10-29

IPC: C23C2/06 ,  B21D22/20 ,  C21D1/18 ,  C21D9/00 ,  C22C18/04 ,  C23C2/28 ,  C22C38/00 ,  C22C38/60 ,  C21D9/48 ,  C23C2/40 ,  C23C28/00 ,  C21D1/673 ,  C21D7/13 ,  C21D8/02 ,  C21D9/46

CPC classification number: B21D22/20 ,  C21D1/18 ,  C22C18/04 ,  C22C38/00 ,  C22C38/60 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23C28/3225 ,  C23C28/345 ,  C21D9/46 ,  C21D8/0278 ,  C21D1/673 ,  C21D7/13

公开(公告)号：EP4353861A1

公开(公告)日：2024-04-17

申请号：EP22841845.5

申请日：2022-06-09

Applicant: JFE Steel Corporation

Inventor： TAKEDA, Gentaro ,  TAKAHASHI, Hideyuki ,  AOYAMA, Mai ,  WATANABE, Maiko ,  EHASHI, Tatsuya

IPC: C23C2/02 ,  C21D9/46 ,  C21D9/56 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C23C2/06 ,  C23C2/40 ,  C23C2/00

CPC classification number: C22C38/00 ,  C23C2/02 ,  C22C38/04 ,  C23C2/06 ,  C22C38/02 ,  C21D9/56 ,  C21D9/46 ,  C23C2/40 ,  C23C2/022 ,  C23C2/0224 ,  C23C2/003 ,  C23C2/0038

Abstract: Provided is a method for manufacturing a hot-dip galvanized steel sheet with which it is possible to achieve high coating adhesiveness and good coating appearance, even in the case where a hot-dip galvanizing treatment is performed on a steel sheet containing Si in an amount of 0.2 mass% or more.
When a hot-dip galvanizing treatment is performed on a steel sheet containing Si in an amount of 0.2 mass% or more by using a continuous hot-dip galvanizing apparatus including an annealing furnace in which a heating zone, a soaking zone, and a cooling zone are arranged in this order, a snout adjacent to the cooling zone, and hot-dip galvanizing equipment, a humidified nitrogen-hydrogen gas mixture containing moisture in such a manner that expression (1) below is satisfied is supplied into a region on the downstream side of the soaking zone, gas nozzles are arranged over the entire perimeter of an inner wall of the snout, nitrogen gas or a nitrogen-hydrogen gas mixture is supplied through the gas nozzles downward along the inner wall, and the dew point in the snout is controlled to be - 50°C to -35°C: 158

公开(公告)号：EP3211112B1

公开(公告)日：2019-05-22

申请号：EP14904512.2

申请日：2014-10-24

Applicant: Nippon Steel & Sumitomo Metal Corporation

Inventor： OOHASHI Tooru ,  MACHIDA Kazuki ,  NAKATA Hiroshi ,  KOJIMA Katsuya ,  HAYAKAWA Kohhei

IPC: C23C2/26 ,  C23C2/40 ,  C23C2/00

CPC classification number: C23C2/003 ,  C23C2/26 ,  C23C2/40

Abstract: The present invention provides a cooling device for a hot-dip plating device provided on an upper side of a plating thickness control device in a conveyance route of a hot-dip plated steel sheet that is conveyed from a plating bath in a vertically upward direction. The cooling device includes: a main cooling device that vertically sprays a main cooling gas to the hot-dip plated steel sheet; and a preliminary cooling device that is provided in a preliminary cooling section between the main cooling device and the plating thickness control device in the conveyance route, and sprays a preliminary cooling gas to a plurality of gas collision positions which are set along the preliminary cooling section.

公开(公告)号：EP3450586A1

公开(公告)日：2019-03-06

申请号：EP17789839.2

申请日：2017-04-20

Applicant: Posco ,  Postech Academy-Industry Foundation

Inventor： RYU, Joo-Hyun ,  KIM, Nack-Joon ,  LEE, Sung-Hak ,  LEE, Won-Hwi ,  LEE, Kyoo-Young ,  LEE, Sea-Woong

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

CPC classification number: C21D8/0247 ,  C21D6/005 ,  C21D6/008 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D9/46 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/38 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

Abstract: The present invention relates to an ultrahigh-strength steel sheet for a vehicle and, more specifically, to an ultrahigh-strength and high-ductility steel sheet having excellent yield ratio and a manufacturing method therefor. One aspect of the present invention provides an ultrahigh-strength and high-ductility steel sheet for cold press forming and a manufacturing method therefor, the steel sheet ensuring ultrahigh strength and high ductility since an alloy component of steel and manufacturing conditions are controlled and, simultaneously, having excellent impact characteristics due to a high yield strength ratio (yield ratio). According to the present invention, provided is the steel sheet capable of satisfying formability and impact stability, which are required for a vehicle steel sheet for cold forming, and replacing a conventional steel sheet for hot press forming, thereby reducing manufacturing costs.

公开(公告)号：EP3187608B1

公开(公告)日：2018-12-12

申请号：EP15835324.3

申请日：2015-08-14

Applicant: JFE Steel Corporation

Inventor： HASEGAWA, Hiroshi ,  FUJITA, Koichiro

IPC: C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C18/04 ,  C21D9/48 ,  C21D8/04 ,  C21D9/46 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/38

CPC classification number: C21D9/46 ,  C21D8/0436 ,  C21D2211/001 ,  C21D2211/008 ,  C22C18/04 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/38 ,  C23C2/28 ,  C23C2/40

Abstract: A high-strength hot-dip galvanized steel sheet having a tensile strength (TS) of 1,300 MPa or more and excellent in ductility and in-plane uniformity of material properties is provided, and a method for manufacturing the steel sheet is also provided. The high-strength hot-dip galvanized steel sheet has a specific composition including C, Si, Mn, etc. In this chemical composition, the content of Ti [Ti] and the content of N [N] satisfy [Ti] > 4[N]. The high-strength hot-dip galvanized steel sheet has a microstructure including martensite at an area fraction of 60% or more and 90% or less, polygonal ferrite at an area fraction of more than 5% and 40% or less, and retained austenite at an area fraction of less than 3% (including 0%). The average hardness of the martensite is 450 or more and 600 or less in terms of Vickers hardness, and the average crystal grain diameter of the martensite is 10 µm or less. The standard deviation of the crystal grain diameters of the martensite is 4.0 µm or less.