公开(公告)号：EP2708610A4

公开(公告)日：2015-10-21

申请号：EP12781669

申请日：2012-04-23

申请人： JFE STEEL CORP ,  HONDA MOTOR CO LTD

发明人： TAKAGI SHUSAKU ,  OKUDA KANEHARU ,  TAMAI YOSHIKIYO ,  FUJITA TAKESHI ,  OKITSU YOSHITAKA ,  NAITO TADASHI ,  TAKAKI NAOKI ,  SUGIURA TOMOAKI

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

CPC分类号： 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：EP2921570A4

公开(公告)日：2015-12-09

申请号：EP13854800

申请日：2013-11-07

申请人： JFE STEEL CORP ,  HONDA MOTOR CO LTD

发明人： TAKAGI SHUSAKU ,  OKUDA KANEHARU ,  TAMAI YOSHIKIYO ,  FUJITA TAKESHI ,  OKITSU YOSHITAKA ,  SUGIURA TOMOAKI ,  TAKAKI NAOKI

IPC分类号： C22C38/00 ,  B62D25/20 ,  C21D8/00 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  F16F7/00 ,  F16F7/12

CPC分类号： B62D29/007 ,  B62D21/152 ,  C21D1/25 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0221 ,  C21D8/0247 ,  C21D8/0473 ,  C21D9/0068 ,  C21D9/48 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  F16F7/003

公开(公告)号：EP2980247A4

公开(公告)日：2016-05-11

申请号：EP14775492

申请日：2014-03-28

申请人： JFE STEEL CORP

发明人： NAGAO AKIHIDE ,  TAKAGI SHUSAKU

IPC分类号： C22C38/00 ,  C21D8/02 ,  C21D8/10 ,  C21D9/00 ,  C21D9/14 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/40 ,  C22C38/54 ,  C22C38/58

CPC分类号： C22C38/54 ,  C21D6/001 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/105 ,  C21D9/0068 ,  C21D9/085 ,  C21D9/14 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

公开(公告)号：EP1889935A4

公开(公告)日：2010-02-24

申请号：EP06731724

申请日：2006-04-06

申请人： JFE STEEL CORP

发明人： MATSUDA HIROSHI ,  NAKAGAITO TATSUYA ,  FUTATSUKA TAKAYUKI ,  TAKAGI SHUSAKU ,  NAGATAKI YASUNOBU

IPC分类号： C22C38/00 ,  C21D9/46

CPC分类号： C21D9/46 ,  B32B15/013 ,  C21D2211/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/40 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23F17/00

摘要： There is provided a high-strength hot-dip galvanized steel sheet having excellent formability, the steel sheet eliminating special pre-structure control and capable of being produced by using a hot-dip galvanized steel-sheet production line that is not capable of sufficiently ensuring an austempering time after annealing. A high-strength hot-dip galvanized steel sheet includes, on the basis of mass percent, 0.05-0.3% C, 1.4% or less (including 0%) Si, 0.08%-3% Mn, 0.003-0.1% P, 0.07% or less S, 0.1-2.5% Al, 0.1-0.5% Cr, and 0.007% or less N, Si + Al ‰¥ 0.5%, and the balance being Fe and incidental impurities, wherein the steel sheet has a retained austenite content of 3% or more by volume fraction, and wherein the average aspect ratio of retained austenite grains is 2.5 or less.

公开(公告)号：EP2138599A4

公开(公告)日：2014-10-22

申请号：EP08740312

申请日：2008-04-07

申请人： JFE STEEL CORP

发明人： TAKAGI SHUSAKU ,  KAWABE HIDETAKA ,  HASEGAWA KOHEI ,  OOI TOSHIHIKO ,  OKITA YASUAKI ,  SAKURAI MICHITAKA

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

CPC分类号： 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

摘要： 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：EP2128295A4

公开(公告)日：2014-01-22

申请号：EP08722826

申请日：2008-03-18

申请人： JFE STEEL CORP

发明人： NAKAGAITO TATSUYA ,  SUZUKI YOSHITSUGU ,  TAKAGI SHUSAKU ,  MATSUOKA SAIJI ,  KAWANO TAKASHI ,  SUGIMOTO YOSHIHARU

IPC分类号： C22C38/06 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28

CPC分类号： C23C2/02 ,  C21D9/46 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/06 ,  C23C2/28 ,  Y10T428/12799 ,  Y10T428/12972 ,  Y10T428/265

公开(公告)号：EP2426230A4

公开(公告)日：2013-05-29

申请号：EP10769853

申请日：2010-04-27

申请人： JFE STEEL CORP

发明人： TAKAGI SHUSAKU ,  HASEGAWA KOHEI

IPC分类号： C22C38/00 ,  B32B15/01 ,  C21D8/04 ,  C21D9/46 ,  C21D9/48 ,  C22C38/02 ,  C22C38/06 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28

CPC分类号： C23C2/02 ,  B32B15/013 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0463 ,  C21D8/0473 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/06 ,  C23C2/28 ,  Y10T428/12229 ,  Y10T428/12799

公开(公告)号：EP2014781A4

公开(公告)日：2012-01-25

申请号：EP06843757

申请日：2006-12-27

申请人： JFE STEEL CORP

发明人： NAKAGAWA KOICHI ,  SUGIHARA REIKO ,  SHIMIZU TETSUO ,  TAKAGI SHUSAKU

IPC分类号： C22C38/00 ,  C21D9/46

CPC分类号： C21D9/46 ,  C21D8/0205 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14

公开(公告)号：EP3273220A4

公开(公告)日：2018-05-16

申请号：EP16764428

申请日：2016-03-07

申请人： JFE STEEL CORP

发明人： NAGAO AKIHIDE ,  TAKAGI SHUSAKU

IPC分类号： G01N15/08

CPC分类号： G01N15/08 ,  G01N15/0826

摘要： Provided is a gas-phase hydrogen permeation test device capable of safely measuring hydrogen permeation behavior in a material under a high-pressure hydrogen atmosphere. The gas-phase hydrogen permeation test device includes a high-pressure hydrogen feeder, an analyzer, a primary-side pipe, a secondary-side pipe, a secondary-side pressure gauge, a primary-side shut-off valve, a primary-side discharge valve, a secondary-side discharge valve, a passive discharger, a secondary-side shut-off valve, and a controller configured to, when the pressure measured by the secondary-side pressure gauge reaches or exceeds a specific value, place the primary-side shut-off valve and the secondary-side shut-off valve into a closed state and the primary-side discharge valve and the secondary-side discharge valve into an open state, in which the primary-side shut-off valve, the primary-side discharge valve, and the secondary-side discharge valve are air-operated valves, the passive discharger is either or both of a safety valve and a rupture disk, the high-pressure hydrogen feeder, the primary-side pipe, the primary-side shut-off valve, the primary-side discharge valve, the passive discharger, the test piece, and the secondary-side discharge valve are installed in an explosion-proof environment, and the analyzer is installed in a non-explosion-proof environment.

公开(公告)号：EP2980246A4

公开(公告)日：2016-03-09

申请号：EP14775133

申请日：2014-03-28

申请人： JFE STEEL CORP

发明人： TAKAGI SHUSAKU ,  NAGAO AKIHIDE

IPC分类号： C22C38/00 ,  C21D6/00 ,  C21D8/02 ,  C21D8/10 ,  C21D9/08 ,  C21D9/14 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/24 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/44 ,  C22C38/50 ,  C22C38/54 ,  C22C38/60

CPC分类号： C22C38/60 ,  C21D6/001 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/005 ,  C21D9/14 ,  C21D9/46 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C23F1/28

摘要： Provided are a steel material and a hydrogen container that achieves a lower fatigue crack propagation rate in a high-pressure hydrogen atmosphere than steels used in the related art, a method for producing the steel material, and a method for producing the hydrogen container. The steel material includes: a composition containing, by mass, C: 0.05% to 0.60%, Si: 0.01% to 2.0%, Mn: 0.3% to 3.0%, P: 0.001% to 0.040%, S: 0.0001% to 0.010%, N: 0.0001% to 0.0060%, Al: 0.01% to 1.5%, one or more elements selected from Ti: 0.01% to 0.20%, Nb: 0.01% to 0.20%, and V: 0.01% or more and less than 0.05%, and one or more elements selected from B: 0.0001% to 0.01%, Mo: 0.005% to 2.0%, and Cr: 0.005% to 3.0%, with the balance being Fe and inevitable impurities; and a steel microstructure that includes 95% or more of tempered martensite on a volume fraction basis, that includes a precipitate having a diameter of 100 nm or less and including one or more elements selected from Ti, Nb, and V and one or more elements selected from carbon and nitrogen at a density of 50 particles/µm 2 or more, and that includes prior austenite having a grain diameter of 3 µm or more.