公开(公告)号：EP4471181A1

公开(公告)日：2024-12-04

申请号：EP23766323.2

申请日：2023-01-19

Applicant: JFE Steel Corporation

Inventor： HATA, Kentaro ,  MORIMOTO, Minako ,  OTSUKA, Shinji ,  TAKAGI, Shusaku

IPC: C23C26/00 ,  B21D22/20 ,  C23C2/06 ,  C23C28/00 ,  C25D5/26 ,  C25D7/00 ,  C09D5/00

Abstract: An object is to effectively inhibit the occurrence of a delayed fracture in a sheared end face of a member that is a press-formed product formed from a high strength steel sheet, or a coated steel sheet including a high strength steel sheet as a substrate, and thus in which there is a concern for the occurrence of a delayed fracture.
A steel sheet includes an outer coating disposed on a surface, and the outer coating includes an organic resin and an inorganic material. The steel sheet has a tensile strength of 1180 MPa or greater. In the outer coating, a concentration of the inorganic material in a region of the outer coating, which is a region extending to 20% of a thickness of the outer coating from a steel-sheet-side, is higher than a concentration of the inorganic material in another region of the outer coating, which is a region extending to 20% of the thickness from an outer-surface-side.

公开(公告)号：EP4239234A1

公开(公告)日：2023-09-06

申请号：EP21885965.0

申请日：2021-10-18

Applicant: JFE Steel Corporation

Inventor： MATSUBARA, Kazuki ,  OKANO, Hiroshi ,  TAKAGI, Shusaku

IPC: F16L9/02 ,  B24B5/06 ,  B24B5/40 ,  F16J12/00 ,  F17C1/00

Abstract: Provided is a steel pipe or tube for hydrogen gas that has both excellent hydrogen embrittlement resistance and high productivity and can be used very suitably as parts of pressure vessels for hydrogen gas. The steel pipe or tube for hydrogen gas having a finish-polished inner surface, in which the inclination angle of a polishing trace present on the inner surface with respect to a circumferential direction of the steel pipe or tube for hydrogen gas is 0° to 30°.

公开(公告)号：EP2138599B1

公开(公告)日：2018-11-14

申请号：EP08740312.7

申请日：2008-04-07

Applicant: JFE Steel Corporation

Inventor： TAKAGI, Shusaku ,  KAWABE, Hidetaka ,  HASEGAWA, Kohei ,  OOI, Toshihiko ,  OKITA, Yasuaki ,  SAKURAI, Michitaka

IPC: C22C38/38 ,  C21D8/02 ,  C21D9/46 ,  C23C2/06 ,  C23C2/28 ,  C22C38/00 ,  C22C38/22 ,  C22C38/02 ,  C22C38/28 ,  C22C38/26 ,  C22C38/32 ,  C22C38/06 ,  C21D6/00 ,  C21D8/04 ,  C23C2/02 ,  C21D9/48

CPC classification number: C23C2/06 ,  C21D6/005 ,  C21D8/0426 ,  C21D8/0473 ,  C21D8/0478 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/02 ,  C23C2/28 ,  Y10T428/12799

Abstract: A high tensile-strength galvanized steel sheet, comprising: C: at least 0.05% but less than 0.12%, Si: at least 0.01% but less than 0.35%, Mn: 2.0% to 3.5%, P: 0.001% to 0.020%, S: 0.0001% to 0.0030%, Al: 0.005% to 0.1%, N: 0.0001% to 0.0060%, Cr: more than 0.5% but not more than 2.0%, Mo: 0.01% to 0.50%, Ti: 0.010% to 0.080%, Nb: 0.010% to 0.080%, and B: 0.0001% to 0.0030%, the remainder being Fe and unavoidable impurities, wherein the high tensile-strength galvanized steel sheet has a microstructure that contains 20% to 70% by volume ferrite having an average grain size of 5 µm or less. The high tensile-strength galvanized steel sheet has a tensile strength of at least 980 MPa, and excellent formability and weldability.

公开(公告)号：EP2708610B1

公开(公告)日：2017-09-27

申请号：EP12781669.2

申请日：2012-04-23

Applicant: JFE Steel Corporation ,  Honda Motor Co., Ltd.

Inventor： TAKAGI, Shusaku ,  OKUDA, Kaneharu ,  TAMAI, Yoshikiyo ,  FUJITA, Takeshi ,  OKITSU, Yoshitaka ,  NAITO, Tadashi ,  TAKAKI, Naoki ,  SUGIURA, Tomoaki

IPC: C22C38/00 ,  B21D53/88 ,  C21D9/46 ,  C22C38/12 ,  B62D29/00 ,  C21D9/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

CPC classification number: B62D29/007 ,  B21D53/88 ,  C21D9/0068 ,  C21D9/46 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  Y10T29/49622

公开(公告)号：EP4246019A1

公开(公告)日：2023-09-20

申请号：EP21891724.3

申请日：2021-11-02

Applicant: JFE Steel Corporation

Inventor： OKANO, Hiroshi ,  MATSUBARA, Kazuki ,  TAKAGI, Shusaku ,  ISHIKAWA, Nobuyuki ,  TAKANO, Toshio

IPC: F16J12/00 ,  F17C1/00

Abstract: To alleviate stress exerted on a thread portion of a high pressure gas container including a metallic container to prevent fatigue fracture, there is provided a high pressure gas container comprising a metallic container, wherein the metallic container includes: a metallic cylinder; a female thread portion on an inner peripheral surface of the metallic cylinder at at least one end; and a lid having, on an outer peripheral surface, a male thread portion configured to screw into the female thread portion, and a maximum value of residual compressive stress at a position of 0.4 mm in a depth direction from a plurality of thread bottoms of the female thread portion and the male thread portion is 100 MPa or more, less than or equal to tensile strength of a material of the metallic cylinder, and less than or equal to tensile strength of a material of the lid.

公开(公告)号：EP4063713A1

公开(公告)日：2022-09-28

申请号：EP20890317.9

申请日：2020-11-18

Applicant: JFE Steel Corporation

Inventor： OKANO, Hiroshi ,  TAKAGI, Shusaku ,  ISHIKAWA, Nobuyuki ,  NAGAO, Akihide ,  MATSUBARA, Kazuki ,  TAKANO, Toshio ,  KADOTA, Kotaro ,  YAMAGUCHI, Norikazu ,  HASEGAWA, Takuya ,  KUNO, Hiroki

IPC: F17C13/00

Abstract: A hydrogen supply system is a system configured to supply hydrogen to a fuel-cell vehicle by using a curdle 4 for hydrogen transport and includes: a filling unit provided at a hydrogen filling facility and configured to fill the curdle 4 with hydrogen; a management unit configured to calculate a transport timing at which hydrogen-filled curdle 4 is transported to a business facility that operates the fuel-cell vehicle; a transport unit configured to transport hydrogen-filled curdle 4 to the business facility in accordance with the transport timing; and a disposition unit configured to dispose hydrogen-filled curdle 4 transported to the business facility at a place to which the fuel-cell vehicle is capable of accessing to have a refill of hydrogen in the business facility.

公开(公告)号：EP2578718A1

公开(公告)日：2013-04-10

申请号：EP11789431.1

申请日：2011-05-30

Applicant: JFE Steel Corporation

Inventor： TAKAGI, Shusaku ,  HASEGAWA, Kohei

IPC: C22C38/38 ,  C21D9/46 ,  C23C2/06 ,  C23C2/40

CPC classification number: C23C2/02 ,  B32B15/013 ,  B32B15/043 ,  B32B15/18 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/005 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0247 ,  C21D8/0278 ,  C21D8/0473 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40 ,  Y10T428/12799

Abstract: The present invention provides a steel sheet, comprising by mass%: C: equal to or more than 0.05% and less than 0.12%; P: 0.001 to 0.040%; and S: equal to or less than 0.0050%, wherein a steel sheet surface layer, constituting a portion of the steel sheet up to a depth of 10 µm measured from each surface of the steel sheet, has a structure containing more than 70% of ferrite phase by a volume fraction, a steel sheet inner layer portion, on the inner side than the depth of 10 µm measured from each surface, has a structure containing 20 to 70% by a volume fraction of ferrite phase with an average crystal grain size equal to or smaller than 5 µm, the steel sheet has a tensile strength equal to or larger than 980 MPa, and the steel sheet has a galvanized layer on a surface thereof. As a result, a steel sheet having high tensile strength of TS ≥ 980MPa and also excellent in bendability and weldability can be obtained.

公开(公告)号：EP2138599A1

公开(公告)日：2009-12-30

申请号：EP08740312.7

申请日：2008-04-07

Applicant: JFE Steel Corporation

Inventor： TAKAGI, Shusaku ,  KAWABE, Hidetaka ,  HASEGAWA, Kohei ,  OOI, Toshihiko ,  OKITA, Yasuaki ,  SAKURAI, Michitaka

IPC: C22C38/38 ,  C21D8/02 ,  C21D9/46 ,  C23C2/06 ,  C23C2/28

CPC classification number: C23C2/06 ,  C21D6/005 ,  C21D8/0426 ,  C21D8/0473 ,  C21D8/0478 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/02 ,  C23C2/28 ,  Y10T428/12799

Abstract: A high tensile-strength galvanized steel sheet, comprising: C: at least 0.05% but less than 0.12%, Si: at least 0.01% but less than 0.35%, Mn: 2.0% to 3.5%, P: 0.001% to 0.020%, S: 0.0001% to 0.0030%, Al: 0.005% to 0.1%, N: 0.0001% to 0.0060%, Cr: more than 0.5% but not more than 2.0%, Mo: 0.01% to 0.50%, Ti: 0.010% to 0.080%, Nb: 0.010% to 0.080%, and B: 0.0001% to 0.0030%, the remainder being Fe and unavoidable impurities, wherein the high tensile-strength galvanized steel sheet has a microstructure that contains 20% to 70% by volume ferrite having an average grain size of 5 µm or less. The high tensile-strength galvanized steel sheet has a tensile strength of at least 980 MPa, and excellent formability and weldability.

Abstract translation: 一种高拉伸强度的镀锌钢板，其特征在于：C：0.05％以上且0.12％以下，Si：0.01％以上且0.35％以下，Mn：2.0％〜3.5％，P：0.001％〜0.020％ ，S：0.0001〜0.0030％，Al：0.005〜0.1％，N：0.0001〜0.0060％，Cr：大于0.5％，以下，2.0％以下，Mo：0.01〜0.50％，Ti：0.010％ 至0.080％，Nb：0.010％〜0.080％，B：0.0001％〜0.0030％，其余为Fe和不可避免的杂质，其中，高强度镀锌钢板具有含有20〜70体积％ 平均粒径为5μm以下的铁素体。 高强度热镀锌钢板的拉伸强度为980MPa以上，成形性和焊接性优异。

公开(公告)号：EP4400747A1

公开(公告)日：2024-07-17

申请号：EP22878483.1

申请日：2022-10-03

Applicant: JFE Steel Corporation

Inventor： TAKAGI, Shusaku ,  OKANO, Hiroshi ,  ISHIKAWA, Nobuyuki

IPC: F16J12/00 ,  F16J13/12 ,  F17C13/00 ,  F16B7/18 ,  F16L15/04

CPC classification number: Y02E60/32 ,  F16L15/04 ,  F17C13/00 ,  F16J13/12 ,  F16J12/00 ,  F16B7/18

Abstract: Provided is a pressure vessel for high-pressure hydrogen gas capable of large-capacity hydrogen storage with a single pressure vessel while being easy to produce, transport, and install. A pressure vessel for high-pressure hydrogen gas comprises a steel container that is composed of two or more steel pipes or tubes connected by screw threads.

公开(公告)号：EP4354011A1

公开(公告)日：2024-04-17

申请号：EP22820293.3

申请日：2022-06-09

Applicant: JFE Steel Corporation

Inventor： TAKANO, Toshio ,  OKANO, Hiroshi ,  TAKAGI, Shusaku

IPC: F17C1/06

CPC classification number: F17C5/06 ,  F17C13/00 ,  F17C1/06

Abstract: A pressure accumulator includes a cylindrical body made of metal and configured to vaporize and store a liquefied gas in a storage space in the cylindrical body, a lid body having a through hole that allows a pipe to penetrate through the through hole, the lid body being configured to fix the pipe passing through the through hole, and being configured to close an opening end portion of the cylindrical body with a gap provided between the lid body and an inner peripheral surface of the cylindrical body, the gap communicating with the storage space of the cylindrical body, a sealing structure portion provided between an outer peripheral portion of the lid body and an inner peripheral portion of the cylindrical body, the sealing structure portion being configured to fill in at least a portion of the gap, and a fixing part provided at the opening end portion of the cylindrical body, an outer peripheral surface of the fixing part being screw fastened to the inner peripheral surface of the cylindrical body to support and fix the lid body from an outer side of the lid body.