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31. 发明公开

EP3272893A4 STEEL MATERIAL FOR COMPOSITE PRESSURE VESSEL LINER, STEEL TUBING FOR COMPOSITE PRESSURE VESSEL LINER, AND METHOD FOR MANUFACTURING STEEL TUBING FOR COMPOSITE PRESSURE VESSEL LINER 有权
公开(公告)号：EP3272893A4
公开(公告)日：2018-01-24
申请号：EP16764427
申请日：2016-03-07
申请人： JFE STEEL CORP
发明人： TAKAGI SHUSAKU , NAGAO AKIHIDE , KIMURA MITSUO , OKANO HIROSHI
IPC分类号： C22C38/00 , C21D8/10 , C21D9/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/18 , C22C38/58 , F17C1/00
CPC分类号： C21D8/10 , C21D9/00 , C21D2211/002 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/18 , C22C38/58 , F17C1/00 , Y02E60/321
摘要： Steel material for composite pressure vessel liners that, when used as raw material for manufacturing a composite pressure vessel liner, yields a liner having sufficient strength and a high fatigue limit and enables the manufacture of an inexpensive composite pressure vessel is provided. Steel material for composite pressure vessel liners comprises: a chemical composition containing, in mass%, C: 0.10% to 0.60%, Si: 0.01% to 2.0%, Mn: 0.1% to 5.0%, P: 0.0005% to 0.060%, S: 0.0001% to 0.010%, N: 0.0001% to 0.010%, and Al: 0.01% to 0.06%, with a balance being Fe and incidental impurities; and a metallic microstructure in which a mean grain size of prior austenite grains is 20 µm or less, and a total area ratio of martensite and lower bainite is 90% or more.

32. 发明公开

EP2447386A4 HIGH-STRENGTH SEAMLESS STEEL TUBE FOR USE IN OIL WELLS, WHICH HAS EXCELLENT RESISTANCE TO SULFIDE STRESS CRACKING AND PRODUCTION METHOD FOR SAME 有权
标题翻译：高强度无缝钢管FOR USE石油钻井具有产生杰出抗SSC性性能和工艺
公开(公告)号：EP2447386A4
公开(公告)日：2016-06-15
申请号：EP10792232
申请日：2010-06-23
申请人： JFE STEEL CORP
发明人： EGUCHI KENICHIRO , TANAKA YUJI , KIMURA MITSUO , ISHIGURO YASUHIDE , YAMADA KATSUMI , NAKAMICHI HARUO
IPC分类号： C22C38/00 , C21D9/08 , C21D9/14 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54
CPC分类号： C21D9/14 , C21D2211/004 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54
摘要： Provided is a high-strength seamless steel tube, having excellent resistance to sulfide stress cracking (SSC resistance), for oil wells. In particular, the seamless steel tube contains 0.15% to 0.50% C, 0.1% to 1.0% Si, 0.3% to 1.0% Mn, 0.015% or less P, 0.005% or less S, 0.01% to 0.1% Al, 0.01% or less N, 0.1% to 1.7% Cr, 0.4% to 1.1% Mo, 0.01% to 0.12% V, 0.01% to 0.08% Nb, and 0.0005% to 0.003% B or further contains 0.03% to 1.0% Cu on a mass basis and has a microstructure which has a composition containing 0.40% or more solute Mo and a tempered martensite phase that is a main phase and which contains prior-austenite grains with a grain size number of 8.5 or more and 0.06% by mass or more of a dispersed M 2 C-type precipitate with substantially a particulate shape.

33. 发明公开

EP2990714A4 ACCUMULATOR 有权转让
公开(公告)号：EP2990714A4
公开(公告)日：2016-04-13
申请号：EP14788687
申请日：2014-04-24
申请人： JFE STEEL CORP , JFE CONTAINER CO LTD
发明人： TAKAGI SHUSAKU , NAGAO AKIHIDE , KIMURA MITSUO , ISHIKAWA NOBUYUKI , TAKANO TOSHIO
IPC分类号： F17C1/06
CPC分类号： F17C1/06 , F17C1/00 , F17C2201/058 , F17C2203/0604 , F17C2203/0621 , F17C2203/0639 , F17C2203/0648 , F17C2203/066 , F17C2203/0663 , F17C2203/0675 , F17C2209/2154 , F17C2209/2163 , F17C2209/225 , F17C2221/012 , F17C2223/0123 , F17C2223/036 , F17C2260/011 , F17C2260/012 , F17C2270/0168 , F17C2270/0184 , Y02E60/321
摘要： To provide an inexpensive hydrogen storage tank while the safety is ensured. A hydrogen storage tank 10 includes a liner layer 12 to store hydrogen and a carbon fiber reinforced plastic layer 14 disposed outside the liner layer 12. The liner layer 12 is formed from a low-alloy steel, and the carbon fiber forming the carbon fiber reinforced plastic layer 14 is a pitch based carbon fiber.

34. 发明公开

EP2843068A4 Cr-CONTAINING STEEL PIPE FOR LINEPIPE EXCELLENT IN INTERGRANULAR STRESS CORROSION CRACKING RESISTANCE OF WELDED HEAT AFFECTED ZONE 有权
标题翻译：含Cr钢的管线管用具有优良的耐焊接热影响区域的INTER CRYSTALLINE应力腐蚀开裂
公开(公告)号：EP2843068A4
公开(公告)日：2015-08-05
申请号：EP12875045
申请日：2012-04-26
申请人： JFE STEEL CORP
发明人： MIYATA YUKIO , KIMURA MITSUO
IPC分类号： C22C38/00 , C22C38/58
CPC分类号： C22C38/58 , C21D6/004 , C21D8/0226 , C21D8/0263 , C21D9/50 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50

35. 发明专利

CA2979021C STEEL MATERIAL FOR COMPOSITE PRESSURE VESSEL LINER, STEEL PIPE OR TUBE FOR COMPOSITE PRESSURE VESSEL LINER, AND METHOD OF MANUFACTURING STEEL PIPE OR TUBE FOR COMPOSITE PRESSURE VESSEL LINER 未知
公开(公告)号：CA2979021C
公开(公告)日：2019-04-09
申请号：CA2979021
申请日：2016-03-07
申请人： JFE STEEL CORP
发明人： TAKAGI SHUSAKU , NAGAO AKIHIDE , KIMURA MITSUO , OKANO HIROSHI
IPC分类号： C22C38/06 , C21D8/10 , C22C38/02 , C22C38/04 , F17C1/00
摘要： Steel material for composite pressure vessel liners that, when used as raw material for manufacturing a composite pressure vessel liner, yields a liner having sufficient strength and a high fatigue limit and enables the manufacture of an inexpensive composite pressure vessel is provided. Steel material for composite pressure vessel liners comprises: a chemical composition containing, in mass%, C: 0.10% to 0.60%, Si: 0.01% to 2.0%, Mn: 0.1% to 5.0%, P: 0.0005% to 0.060%, S: 0.0001% to 0.010%, N: 0.0001% to 0.010%, and Al: 0.01% to 0.06%, with a balance being Fe and incidental impurities; and a metallic microstructure in which a mean grain size of prior austenite grains is 20 um or less, and a total area ratio of martensite and lower bainite is 90% or more.

36. 发明专利

CA2766028A1 HIGH-STRENGTH SEAMLESS STEEL TUBE, HAVING EXCELLENT RESISTANCE TO SULFIDE STRESS CRACKING, FOR OIL WELLS AND METHOD FOR MANUFACTURING THE SAME 未知
公开(公告)号：CA2766028A1
公开(公告)日：2010-12-29
申请号：CA2766028
申请日：2010-06-23
申请人： JFE STEEL CORP
发明人： EGUCHI KENICHIRO , TANAKA YUJI , KIMURA MITSUO , ISHIGURO YASUHIDE , YAMADA KATSUMI , NAKAMICHI HARUO
IPC分类号： C22C38/00 , C21D9/08 , C22C38/32 , C22C38/54
摘要： Disclosed is a high-strength seamless steel pipe, which has excellent sulfide stress cracking resistance (SSC resistance), for use in oil wells. Specifically the seamless steel pipe has a composition containing, by mass %: C: 0.15-0.50%, Si: 0.1-1.0%, Mn: 0.3-1.0%, P: 0.015% or less, S: 0.005% or less, Al: 0.01-0.1% or less, N: 0.01% or less, Cr: 0.1-1.7%, Mo: 0.40-1.1%, V: 0.01-0.08%, Nb: 0.01-0.08%, B: 0.0005-0.003% and optionally Cu: 0.03-1.0%; where 0.40% or more of solute Mo is included within the aforementioned Mo; and a composition formed by the dispersal of 0.06 mass % or more of roughly particulate M2C precipitates, which has a tempered martensite main phase and has prior austenite grains with a grain number of 8.5 or greater.

37. 发明专利

DE60231279D1 未知
公开(公告)号：DE60231279D1
公开(公告)日：2009-04-09
申请号：DE60231279
申请日：2002-08-22
申请人： JFE STEEL CORP
发明人： MIYATA YUKIO , KIMURA MITSUO , TOYOOKA TAKAAKI
IPC分类号： C21D8/10 , B21B3/02 , B21B23/00 , C22C38/18 , C22C38/40
摘要： A method of producing a high-strength high-toughness martensitic stainless steel seamless pipe which includes heating a martensitic stainless steel raw material to an austenitic range and subjecting the raw material to piercing and elongating to form an original pipe. The original pipe is cooled to form a structure substantially composed of martensite in the original pipe. The original pipe is reheated to a temperature in the dual-phase range between the Ac1 transformation point and the Ac3 transformation point, and is subjected to finishing rolling at an initial rolling temperature T ( DEG C) between the Ac1 transformation point and the Ac3 transformation point. The original pipe is then cooled to form a processed pipe. The processed pipe is tempered at a temperature below the Ac1 transformation point. The reduction in area R in the finishing rolling step may be in the range of 10% to 90%, and the initial rolling temperature T and the reduction in area R may satisfy the relationship: 800 ≤ T - 0.625R ≤ 850.

38. 发明专利

DE60224243T2 未知
公开(公告)号：DE60224243T2
公开(公告)日：2008-05-08
申请号：DE60224243
申请日：2002-03-22
申请人： JFE STEEL CORP
发明人： TOYOOKA TAKAAKI , MIYATA YUKIO , KIMURA MITSUO , ITOYAMA SEIJI , KISHIMOTO YASUO , NISHIKOORI MASANORI , TAWARA EIJI , OZAKI SEIJI
IPC分类号： B22D11/00 , B22D11/22 , B21B19/04 , B21B19/06 , B22D11/12 , B22D11/124

39. 发明专利

DE60224243D1 未知
公开(公告)号：DE60224243D1
公开(公告)日：2008-02-07
申请号：DE60224243
申请日：2002-03-22
申请人： JFE STEEL CORP
发明人： TOYOOKA TAKAAKI , MIYATA YUKIO , KIMURA MITSUO , ITOYAMA SEIJI , KISHIMOTO YASUO , NISHIKOORI MASANORI , TAWARA EIJI , OZAKI SEIJI
IPC分类号： B22D11/00 , B22D11/22 , B21B19/04 , B21B19/06 , B22D11/12 , B22D11/124

40. 发明专利

BRPI0418480A 未知
公开(公告)号：BRPI0418480A
公开(公告)日：2007-06-19
申请号：BRPI0418480
申请日：2004-12-01
申请人： JFE STEEL CORP
发明人： MIYATA YUKIO , KIMURA MITSUO , ITAKURA NORITSUGU , MASAMURA KATSUMI
IPC分类号： C22C38/00 , C22C38/40 , C22C38/58
摘要： A martensitic stainless steel pipe having a heat-affected zone with high resistance to intergranular stress corrosion cracking is provided. In particular, the martensitic stainless steel pipe contains less than 0.0100% of C; less than 0.0100% of N; 10% to 14% of Cr; and 3% to 8% of Ni on a mass basis. Alternatively, the martensitic stainless steel pipe may further contain Si, Mn, P, S, and Al within an appropriate content range. The martensitic stainless steel pipe may further contain one or more selected from the group consisting of 4% or less of Cu, 4% or less of Co, 4% or less of Mo, and 4% or less of W and one or more selected from the group consisting of 0.15% or less of Ti, 0.10% or less of Nb, 0.10% or less of V, 0.10% or less of Zr, 0.20% or less of Hf, and 0.20% or less of Ta on a mass basis. The content C sol defined by the following equation is equal to less than 0.0050%: C sol = C - 1/3 × C pre , wherein C pre = 12.0 {Ti/47.9 + 1/2 (Nb/92.9 + Zr/91.2) + 1/3 (V/50.9 + Hf/178.5 + Ta/180.9) - N/14.0} or C pre = 0 when C pre

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