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41. 发明专利

JP2010127793A Method for analysis of precipitate and/or inclusion in metal material 有权
标题翻译：金属材料中分解和/或包含的分析方法
公开(公告)号：JP2010127793A
公开(公告)日：2010-06-10
申请号：JP2008303360
申请日：2008-11-28
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： ISHIDA TOMOHARU , JODAI TETSUSHI , YAMADA KATSUMI , SATO KAORU , NORO HISATO
IPC分类号： G01N1/28 , G01N1/10
摘要： PROBLEM TO BE SOLVED: To provide a method of analyzing a precipitate and/or inclusion in a metal material for precisely performing the analysis by size of the precipitate or the like by separating the precipitate or the like (especially ≤1 μm in size) present in the metal sample without losing the same. SOLUTION: At first, a metal sample is electrolyzed. Subsequently, the remaining part of the metal sample after electrolysis is immersed in a solution having dispersion to separate the precipitate and/or inclusion in the metal sample. At the same time, the precipitate and/or inclusion contained in an electrolytic solution after electrolysis is filtered by a collecting filter to be collected and the collecting filter is subsequently immersed in the solution having dispersion to separate the precipitate and/or inclusion in the electrolytic solution. Subsequently, the precipitate and/or inclusion separated in the solution by two steps is analyzed. In this analyzing method, as the solution having dispersion, for example, a solution wherein the absolute value of zeta potential is ≥30 mV can be used with respect to the precipitate and/or inclusion being an analysis target. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：待解决的问题：提供一种分析金属材料中的沉淀物和/或夹杂物的方法，用于通过分离沉淀物等来精确地进行分析沉淀物的尺寸（特别是≤1μm的尺寸）存在于金属样品中而不损失。
解决方案：首先，金属样品被电解。随后，将电解后的金属样品的剩余部分浸渍在具有分散体的溶液中，以将金属样品中的沉淀物和/或包含物分离。同时，电解后的电解液中所含的沉淀物和/或夹杂物通过收集过滤器进行过滤以收集，随后将收集过滤器浸入具有分散液的溶液中以将沉淀物和/或包含物分离在电解液解。随后，分析通过两个步骤在溶液中分离的沉淀物和/或夹杂物。在该分析方法中，作为具有分散性的溶液，例如可以使用ζ电位的绝对值为≥30mV的溶液作为分析对象的沉淀物和/或包含物。版权所有（C）2010，JPO＆INPIT

42. 发明专利

JP2010023106A Weld metal for stainless steel welded joint, and method for evaluating corrosion resistance thereof 有权
标题翻译：用于不锈钢焊接接头的焊接金属及其耐腐蚀性评估方法
公开(公告)号：JP2010023106A
公开(公告)日：2010-02-04
申请号：JP2008190439
申请日：2008-07-24
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： YANO HIROSHI , NAKAMICHI JIRO , OKADA SHUJI , KAWABATA FUMIMARU , OI KENJI , YAMADA KATSUMI
IPC分类号： B23K35/30 , B23K9/23 , B23K31/00 , B23K103/04 , B23K103/18 , C21D9/46 , C22C38/00 , C22C38/50 , G01N17/00 , G01N23/225 , G01N33/20
摘要： PROBLEM TO BE SOLVED: To provide a weld metal having excellent corrosion resistance in a different material welded joint between a ferritic stainless steel sheet and an austenitic stainless steel sheet, and to provide a method for evaluating its corrosion resistance.
SOLUTION: The weld metal for a dissimilar welded joint with stainless steel includes, by mass, 18 to 21% Cr, ≤0.1% Mo, ≤0.5% Cu, 0.03 to 0.25% Nb, ≤0.05% Ti and ≤0.04% N, and in which a difference between the minimum value of the Cr concentration on the ferritic phase side in the grain boundaries or in the vicinities of the grain boundaries and the Cr concentration of the ferritic phase in the mother phase is ≤10 mass%, and also, a difference between the minimum value of the Cr concentration on the austenitic phase side in the vicinities of the grain boundaries and the Cr concentration of the austenitic phase in the mother phase is ≤5 mass%. Also, the method for evaluating the corrosion resistance evaluates corrosion resistance by the difference between the minimum value of the Cr concentration on the ferritic phase side in the grain boundaries or in the vicinities of the grain boundaries and/or the difference between the minimum value of the Cr concentration on the austenitic phase side in the vicinities of the grain boundaries and the Cr concentration of the austenitic phase in the mother phase.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供在铁素体不锈钢板和奥氏体不锈钢板之间的不同材料焊接接头中具有优异耐腐蚀性的焊接金属，并提供一种评价其耐腐蚀性的方法。解决方案：用于不锈钢焊接接头的焊接金属质量分别为18〜21％Cr，≤0.1％Mo，≤0.5％Cu，0.03〜0.25％Nb，≤0.05％Ti，≤0.04 ％N，并且其中在晶界中的铁素体相侧的Cr浓度与晶界附近的Cr浓度与母相的铁素体相的Cr浓度之间的差为≤10质量％，并且在晶界附近的奥氏体相侧的Cr浓度与母相的奥氏体相的Cr浓度的最小值之差为5质量％以下。此外，耐腐蚀性评价方法是通过晶粒边界内的铁素体相侧的Cr浓度的最小值或晶界附近的/ Cr的最小值和在晶界附近的奥氏体相侧的Cr浓度和母相中的奥氏体相的Cr浓度。版权所有（C）2010，JPO＆INPIT

43. 发明专利

JP2009191360A High strength steel sheet, and method for producing the same 有权
标题翻译：高强度钢板及其制造方法
公开(公告)号：JP2009191360A
公开(公告)日：2009-08-27
申请号：JP2009007298
申请日：2009-01-16
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： NAKAGAWA KOICHI , YOKOTA TAKESHI , SETO KAZUHIRO , JODAI TETSUSHI , TANAKA YUJI , YAMADA KATSUMI , NAKAJIMA KATSUMI , MEGA TETSUYA
IPC分类号： C22C38/00 , B21B1/26 , B21B3/00 , C21D9/46 , C22C38/14 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide a high strength steel sheet having excellent elongation and stretch flange properties after working, and to provide a method for producing the same. SOLUTION: The high strength steel sheet includes a componential composition comprising, by mass, 0.08 to 0.20% C, 0.2 to 1.0% Si, 0.5 to 2.5% Mn, ≤0.04% P, ≤0.005% S, ≤0.05% Al, 0.07 to 0.20% Ti and 0.05 to S -HV α ) between the hardness (HV S ) of the bainitic phase and the hardness (HV α ) of the ferritic phase is ≤300. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：待解决的问题：提供一种加工后的伸长率和拉伸凸缘性优异的高强度钢板，并提供其制造方法。解决方案：高强度钢板包括质量分数为0.08-0.20％的Si，0.2到1.0％的Si，0.5到2.5％的Mn，≤0.04％的P，≤0.005％的S，≤0.05％ Al，0.07〜0.20％Ti，0.05〜0.20％V，余量为Fe与不可避免的杂质。然后，钢板包括由铁素体组成的体积分数为60〜95％，贝氏体为5〜35％的第二相。此外，尺寸<20nm的析出物中所含的Ti的含量为450〜1800质量ppm，V的含量为350〜<1200质量ppm。贝氏体相的硬度（HV S ）与硬度（HV α）之间的差异（HV S -HV α 铁素体相的≤300。版权所有（C）2009，JPO＆INPIT

44. 发明公开

EP2163879A4 METHOD FOR ANALYSIS OF METALLIC MATERIAL 有权
公开(公告)号：EP2163879A4
公开(公告)日：2017-12-20
申请号：EP08765874
申请日：2008-06-26
申请人： JFE STEEL CORP
发明人： ISHIDA TOMOHARU , KINOSHIRO SATOSHI , YAMADA KATSUMI , NORO HISATO , SATO KAORU
IPC分类号： G01N1/28 , G01N1/40 , G01N5/02 , G01N27/42 , G01N33/20
CPC分类号： G01N33/20 , G01N5/02 , G01N27/42 , G01N2001/4088
摘要： A method for analyzing a metallic material includes the steps of electrolyzing a metal sample in an electrolyte; removing the electrolyzed metal sample from the electrolyte; immersing the metal sample removed from the electrolyte into a dispersive solution that is different from the electrolyte to separate at least one selected from the group consisting of a precipitate and an inclusion deposited on the metal sample; and analyzing the at least one selected from the group consisting of a precipitate and an inclusion extracted into.the dispersive solution.

45. 发明公开

EP1770181A4 COMPONENT FOR MACHINE STRUCTURE, METHOD FOR PRODUCING SAME, AND MATERIAL FOR HIGH-FREQUENCY HARDENING 有权
标题翻译： COMPONENT机械结构，方法及其和材料高频淬火
公开(公告)号：EP1770181A4
公开(公告)日：2010-11-24
申请号：EP05758220
申请日：2005-07-05
申请人： JFE STEEL CORP
发明人： HAYASHI TORU , OHMORI YASUHIRO , KUROSAWA NOBUTAKA , MATSUZAKI AKIHIRO , TOYOOKA TAKAAKI , YAMADA KATSUMI
IPC分类号： C22C38/00 , C21D1/10 , C21D6/00 , C21D9/28 , C22C38/14 , C22C38/60
CPC分类号： C22C38/02 , C21D1/10 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/12 , C22C38/14 , C22C38/60 , Y02P10/253

46. 发明专利

BR112012000648A2 chapa de aço de alta resistência e método para produção da mesma 未知
公开(公告)号：BR112012000648A2
公开(公告)日：2016-02-10
申请号：BR112012000648
申请日：2010-06-29
申请人： JFE STEEL CORP
发明人： SETO KAZUHIRO , NAKAGAWA KOICHI , NAKAJIMA KATSUMI , YAMADA KATSUMI , KINOSHIRO SATOSHI , YOKOTA TAKESHI , MEGA TETSUYA , TANAKA YUJI
IPC分类号： C21D9/46 , C22C38/00 , C22C38/14 , C22C38/38

47. 发明专利

CA2693489C HIGH-STRENGTH STEEL SHEET 未知
公开(公告)号：CA2693489C
公开(公告)日：2013-11-19
申请号：CA2693489
申请日：2008-07-31
申请人： JFE STEEL CORP
发明人： NAKAGAWA KOICHI , YOKOTA TAKESHI , NAKAMURA NOBUYUKI , SETO KAZUHIRO , KINOSHIRO SATOSHI , YAMADA KATSUMI
IPC分类号： C22C38/14 , C21D8/02 , C21D9/46 , C22C38/38
摘要： A high-strength steel sheet having high stretch flangeability after working and corrosion resistance after painting is provided. The steel sheet contains, on the basis of mass percent, C: 0.02% to 0.20%, Si: 0.3% or less, Mn: 0.5% to 2.5%, P: 0.06% or less, S: 0.01% or less, Al: 0.1% or less, Ti: 0.05% to 0.25%, and V: 0.05% to 0.25%, the remainder being Fe and incidental impurities. The steel sheet has a substantially ferritic single phase, the ferritic single phase containing precipitates having a size of less than 20 nm, the precipitates containing 200 to 1750 mass ppm Ti and 150 to 1750 mass ppm V, V dissolved in solid solution being 200 or more but less than 1750 mass ppm.

48. 发明专利

CA2767439A1 HIGH-STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME 未知
公开(公告)号：CA2767439A1
公开(公告)日：2011-01-13
申请号：CA2767439
申请日：2010-06-29
申请人： JFE STEEL CORP
发明人： NAKAGAWA KOICHI , YOKOTA TAKESHI , SETO KAZUHIRO , KINOSHIRO SATOSHI , TANAKA YUJI , YAMADA KATSUMI , MEGA TETSUYA , NAKAJIMA KATSUMI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/14 , C22C38/38
摘要： Provided are a high-strength steel sheet with superior post-processing stretch flange characteristics and a manufacturing method therefor. The composition thereof comprises, in mass%, a range from 0.08% to 0.20% of carbon, 0.2% to 1.0% of silicon, 0.5% to 2.5% of manganese, up to 0.04% of phosphorus, up to 0.005% of sulfur, up to 0.05% of aluminum, 0.07% to 0.20% of titanium, and 0.20% to 0.80% of vanadium, with the remainder comprising iron and unavoidable impurities. Additionally, the structure is from 80% to 98% a ferrite phase and a second phase by volume. Furthermore, the total amount of titanium and vanadium comprised in deposits with a size of less than 20nm is more than 0.150 mass%. The difference (HVa-HVS) between the hardness (HVa) of the aforementioned ferrite phase and the hardness (HVS) of a bainite phase is in the range of -300 to 300.

49. 发明专利

CA2767439C HIGH-STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME 未知
公开(公告)号：CA2767439C
公开(公告)日：2015-03-24
申请号：CA2767439
申请日：2010-06-29
申请人： JFE STEEL CORP
发明人： NAKAGAWA KOICHI , YOKOTA TAKESHI , SETO KAZUHIRO , KINOSHIRO SATOSHI , TANAKA YUJI , YAMADA KATSUMI , MEGA TETSUYA , NAKAJIMA KATSUMI
IPC分类号： C22C38/14 , C21D8/02 , C22C38/02 , C22C38/04 , C22C38/12
摘要： Provided are a high-strength steel sheet having excellent stretch flangeability after working and a method for producing such a high-strength steel sheet. The composition contains, in mass percent, 0.08% to 0.20% of carbon, 0.2% to 1.0% of silicon, 0.5% to 2.5% of manganese, 0.04% or less of phosphorus, 0.005% or less of sulfur, 0.05% or less of aluminum, 0.07% to 0.20% of titanium, and 0.20% to 0.80% of vanadium, the balance being iron and incidental impurities. In addition, the structure includes 80% to 98% by volume of a ferrite phase and a second phase. Furthermore, the sum of the amounts of titanium and vanadium contained in precipitates having a size of less than 20 nm is 0.150% by mass or more. The difference (HV.alpha. - HV S) between the hardness of the ferrite phase (HV.alpha.) and the hardness of a second phase (HV S) is -300 to 300.

50. 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.

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