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21. 发明专利

JP2014043641A Method for manufacturing hot-dip galvanized steel pipe 有权
标题翻译：制造热镀锌钢管的方法
公开(公告)号：JP2014043641A
公开(公告)日：2014-03-13
申请号：JP2013058007
申请日：2013-03-21
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： INOHARA YASUTO , MURASE MASAJI , HOSHINO TOSHIYUKI , INOSE TADAO , HARADA YASUHIRO
IPC分类号： C23C2/06 , C22C18/00 , C22C38/00 , C22C38/18 , C22C38/50 , C23C2/30
摘要： PROBLEM TO BE SOLVED: To provide a hot-dip galvanized steel pipe having a zinc plating layer including Pb of 0.10 mass% or less and Cd of 0.01 mass% or less and having excellent peeling resistance.SOLUTION: The method for manufacturing a hot-dip galvanized steel pipe comprises: performing flux treatment to a steel pipe to be plated at least including Si of 0.05-1.00 mass% and/or Cu of 0.03-0.50 mass% using a flux treatment liquid having a specific gravity of 1.10 or more and 1.30 or less at 70°C and a temperature of 55°C or more and 95°C or less; drying the steel pipe to be plated after the flux treatment at the maximum temperature of 105°C or more and 180°C or less; and immersing the steel pipe to be plated after the drying in a plating bath including Zn of 97.5 mass% or more, Fe of 1.5 mass% or less, Pb of 0.10 mass% or less and Cd of 0.01 mass% or less as a component composition to perform hot-dip galvanizing treatment.
摘要翻译：要解决的问题：提供一种具有包含0.10质量％以下的Pb，0.01质量％以下的Cd，并且耐剥离性优异的镀锌层的热浸镀锌钢管。浸镀锌钢管包括：使用比重为1.10以上的助焊剂处理液，使至少含有0.05〜1.00质量％的Si和0.03-0.50质量％的Cu的钢管进行焊剂处理，以及在70℃下为1.30以下，温度为55℃以上且95℃以下，在最高温度为105℃以上至180℃以下的条件下，对焊接后的钢管进行干燥处理; 将干燥后的钢管浸渍在包含Zn为97.5质量％以上，Fe为1.5质量％以下，Pb为0.10质量％以下，Cd为0.01质量％以下的镀浴中，作为成分组合进行热镀锌处理。

22. 发明专利

JP2014028989A Hot-dip galvanized steel tube 有权
标题翻译：热镀锌钢管
公开(公告)号：JP2014028989A
公开(公告)日：2014-02-13
申请号：JP2012169613
申请日：2012-07-31
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： INOHARA YASUTO , HOSHINO TOSHIYUKI , KOMORI TSUTOMU , INOSE TADAO , HARADA YASUHIRO
IPC分类号： C23C2/06 , C22C18/00 , C22C38/00 , C22C38/20 , C22C38/54 , C23C2/38
摘要： PROBLEM TO BE SOLVED: To provide a hot-dip galvanized steel tube that has a galvanized layer containing Pb and Cd, the Pb being controlled to 0.10 mass% or less and Cd being controlled to 0.01 mass% or less, and is free from non-plating defects and excellent in workability such that separation of the galvanized layer does not occur.SOLUTION: The hot-dip galvanized steel tube has a galvanized layer of which component composition contains at least 0.10 mass% or less Pb and 0.01 mass% or less Cd, and a steel tube to be plated of which component composition comprises 0.010-0.250 mass% C, 0.01-1.00 mass% Si, 0.50 mass% or less Cu, 0.10-1.50 mass% Mn, 0.050 mass% or less P, 0.010 mass% or less S, 0.005-0.100 mass% Cr, 0.005-0.100 mass% sol.Al, 0.0010-0.0080 mass% N, and the balance Fe with inevitable impurities, where an average thickness of a Γ phase that is present at an interface between the galvanized layer and a ferrite is 1.0 μm or less.
摘要翻译：要解决的问题：为了提供一种具有包含Pb和Cd的镀锌层的热浸镀锌钢管，将Pb控制在0.10质量％以下，将Cd控制在0.01质量％以下，电镀缺陷，加工性优异，不会发生镀锌层的分离。热镀锌钢管具有镀层，其组成成分含有至少0.10质量％以下且0.01质量％以下 Cd，以及组成为0.010〜0.250质量％C，0.01〜1.00质量％Si，0.50质量％以下Cu，0.10〜1.50质量％Mn，0.050质量％以下P，0.010的组成成分的钢管质量％以下S，0.005〜0.100质量％的Cr，0.005〜0.100质量％的溶胶Al，0.0010〜0.0080质量％N，余量为Fe与不可避免的杂质，平均厚度为＆Ggr; 存在于镀锌层与铁素体之间的界面的相位为1.0μm以下。

23. 发明专利

JP2010216005A Corrosion-resistant steel material for crude oil tanker 有权
标题翻译：原油油罐用耐腐蚀钢材
公开(公告)号：JP2010216005A
公开(公告)日：2010-09-30
申请号：JP2009288921
申请日：2009-12-21
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： KOMORI TSUTOMU , SHIOTANI KAZUHIKO , INOHARA YASUTO
IPC分类号： C22C38/00 , C22C38/60 , C23C28/00
CPC分类号： C22C38/02 , C21D9/46 , C22C38/008 , C22C38/20 , C22C38/22 , C22C38/38 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a corrosion-resistant steel material for a tanker, which has excellent corrosion resistance in a corrosive environment produced in an oil tank in the tanker and also has excellent post-coating corrosion resistance in a corrosive environment produced in a ballast tank in the tanker. SOLUTION: The corrosion-resistant steel material for a crude oil tanker has a composition comprising, by mass, 0.03 to 0.16% C, 0.05 to 1.50% Si, 0.1 to 2.0% Mn, ≤0.025% P, ≤0.01% S, 0.005 to 0.10% Al, ≤0.008% N, >0.1 to 0.5% Cr and 0.03 to 0.5% Cu, also comprising, as a selective additional element(s), one or more kinds selected from 0.01 to 0.5% W, 0.01 to 0.5% Mo, 0.001 to 0.2% Sn, 0.001 to 0.5% Sb, 0.005 to 0.3% Ni and 0.005 to 0.3% Co, and further comprising Cu, W, Mo, Sn, Sb, Cr, Ni, Co, S and P so as to satisfy predetermined relation. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于油罐车的耐腐蚀钢材料，其在油罐油罐中产生的腐蚀环境中具有优异的耐腐蚀性，并且在腐蚀性环境中也具有优异的后涂层耐腐蚀性在油罐车的压载舱中产生。解决方案：原油罐车的耐腐蚀钢材料具有质量为0.03〜0.16％C，0.05〜1.50％Si，0.1〜2.0％Mn，≤0.025％P，≤0.01％的组成， S，0.005〜0.10％的Al，≤0.008％的N，> 0.1〜0.5％的Cr和0.03〜0.5％的Cu，还含有选自0.01〜0.5％W， 0.01〜0.5％Mo，0.001〜0.2％Sn，0.001〜0.5％Sb，0.005〜0.3％Ni和0.005〜0.3％Co，还含有Cu，W，Mo，Sn，Sb，Cr，Ni，Co，S 和P，以满足预定的关系。版权所有（C）2010，JPO＆INPIT

24. 发明专利

JP2010150620A Anticorrosive coated steel material 审中-公开
标题翻译：防腐涂层钢材
公开(公告)号：JP2010150620A
公开(公告)日：2010-07-08
申请号：JP2008331766
申请日：2008-12-26
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： KISHI KEIICHIRO , TSURI YUKIO , INOHARA YASUTO
IPC分类号： C23F11/00 , C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide an anticorrosive coated steel material excellent in sulfuric acid resistance and hydrochloric acid resistance. SOLUTION: The anticorrosive coated steel material has an anticorrosive coated layer on at least one side of a steel material. The steel materials includes, 0.01-0.12 mass% C, 0.01-1.5 mass% Si, 0.1-2.5 mass% Mn, ≤0.05 mass% P, 0.005-0.03 mass% S, 0.03-1.0 mass% Cu, 0.002-0.7 mass% Sb, 0.003-0.5 mass% W, and 0.005-0.5 mass% Al, 0.001-0.01 mass% N, and the balance Fe with inevitable impurities, and C, Sb, and W satisfy a relation of following formula (1). The anticorrosive coated layer contains a substance containing sulfur and is formed by being directly or via an intermediate layer laminated to the steel material. (1) 2.5≤(W+Sb)/C. W, Sb, and C of formula (1), are the contents (mass%) of respective elements. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供耐硫酸性和耐盐酸性优异的耐腐蚀涂层钢材料。防锈涂层钢材料在钢材的至少一面上具有防腐涂层。钢材含有0.01-0.12质量％C，0.01-1.5质量％Si，0.1-2.5质量％Mn，≤0.05质量％P，0.005-0.03质量％S，0.03-1.0质量％Cu，0.002-0.7质量％％Sb，0.003〜0.5质量％W，0.005〜0.5质量％的Al，0.001-0.01质量％的N，余量为Fe的不可避免的杂质，C，Sb，W满足下式（1）的关系。耐腐蚀涂层含有含硫物质，并且通过直接或通过层压在钢材上的中间层形成。（1）2.5≤（W + Sb）/℃。式（1）的W，Sb，C为各元素的含量（质量％）。版权所有（C）2010，JPO＆INPIT

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