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1. 发明专利

JP2007239094A Acid corrosion resistant steel 有权
标题翻译：酸性耐腐蚀钢
公开(公告)号：JP2007239094A
公开(公告)日：2007-09-20
申请号：JP2007018203
申请日：2007-01-29
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： USAMI AKIRA , SAKAMOTO TOSHIHARU , NISHIMURA SATORU , OKUJIMA MOTOHIRO , TANAKA MUTSUTO
IPC分类号： C22C38/00 , C22C38/16 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide an acid corrosion resistant steel exhibiting excellent corrosion resistance even in any environment of low temperature/low sulfuric acid concentration and medium temperature/medium sulfuric acid concentration without adding large quantities of various alloy elements.
SOLUTION: The acid corrosion resistant steel has a composition comprising, by mass, 0.001 to 0.2% C, 0.01 to 3.0% Si, 0.01 to 3.0% Mn, 0.001 to 0.3% Al, 0.01 to 2.0% Cu, 0.01 to 2.0% Ni and 0.01 to 0.2% Co, and in which the content of P is regulated to ≤0.035% and the content of S is regulated to ≤0.030%, and, if required, further comprising prescribed amounts of one or more kinds of elements selected from the group consisting of Mo, W, Sb, Sn, Se, Pb, Nb, V, Ti, Ta, Zr, B, Mg, Ca, Y, La and Ce, and the balance Fe with inevitable impurities.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使在低温/低硫酸浓度和中等温度/中等硫酸浓度的任何环境中，即使在不添加大量各种合金元素的情况下也能够提供耐腐蚀性优异的耐酸腐蚀性钢。解决方案：耐酸腐蚀钢具有质量分数为0.001〜0.2％的Si，0.01〜3.0％的Si，0.01〜3.0％的Mn，0.001〜0.3％的Al，0.01〜2.0％的Cu，0.01〜 2.0％Ni和0.01〜0.2％Co，其中P含量调节至≤0.035％，S含量调节至≤0.030％，如果需要，还包含规定量的一种或多种选自Mo，W，Sb，Sn，Se，Pb，Nb，V，Ti，Ta，Zr，B，Mg，Ca，Y，La和Ce的元素，余量为不可避免的杂质。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2007217789A Enameled product and glaze 有权
标题翻译：有效的产品和玻璃
公开(公告)号：JP2007217789A
公开(公告)日：2007-08-30
申请号：JP2006194820
申请日：2006-07-14
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NISHIMURA SATORU , SAKAMOTO TOSHIHARU , MURAKAMI HIDEKUNI
IPC分类号： C23D5/00 , C22C38/00 , C22C38/60 , C23C28/00
CPC分类号： C23C30/00 , C03C8/02 , C03C2207/04 , C22C38/02 , C22C38/04 , C22C38/16 , C23D5/00 , Y10T428/12493 , Y10T428/12951 , Y10T428/12972 , Y10T428/26 , Y10T428/31678
摘要： PROBLEM TO BE SOLVED: To provide enameled products which have improved tight adhesion of steel substrate and porcelain enamel layer and are excellent in the resistance to sulfuric or hydrochloric acid dew point corrosion; and a glaze. SOLUTION: An enameled product obtained by forming a porcelain enamel layer having a thickness of 50 to 700 μm on the surface of a substrate made of a steel containing by mass Cu: 0.05 to 0.5%, Si: 0.1 to 2.0%, Mn: 0.05 to 2.0%, P: 0.005 to 0.10%, S: 0.005 to 0.1%, and C: 0.20% or below with the balance being Fe and unavoidable impurities. The Co oxide content of the porcelain enamel layer is controlled to be 0.01 to 10% in terms of Co and/or the Ni oxide content thereof is controlled to be 0.05 to 20% in terms of Ni. Alternatively the total Ni content of the substrate and the porcelain enamel layer is controlled to be 0.005 to 4.5% based on the whole mass of the enameled product and/or the total Co content thereof is controlled to be 0.008 to 4.0% based thereon. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有改善的钢基材和瓷漆层的紧密粘合性并且耐硫酸或盐酸露点腐蚀性优异的漆包产品。和釉。解决方案：通过在由Cu含量为0.05〜0.5％，Si：0.1〜2.0％的钢制成的基板的表面上形成厚度为50〜700μm的瓷釉层而得到的漆包产品， Mn：0.05〜2.0％，P：0.005〜0.10％，S：0.005〜0.1％，C：0.20％以下，余量为Fe和不可避免的杂质。陶瓷瓷漆层的氧化钴含量以Co计为0.01〜10％，Ni的Ni氧化物含量控制在0.05〜20％。或者，基于漆包产物的整体质量将基底和瓷釉层的总Ni含量控制在0.005〜4.5％，和/或其总Co含量基于此控制在0.008〜4.0％。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2007016253A Steel superior in high-temperature oxidation resistance 审中-公开
标题翻译：钢高温高温氧化电阻
公开(公告)号：JP2007016253A
公开(公告)日：2007-01-25
申请号：JP2005195955
申请日：2005-07-05
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO TOSHIHARU , ABE MASAYUKI , NISHIMURA SATORU
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel which is suitable for a fin material of a spiral fin tube and is superior in high temperature oxidation resistance.
SOLUTION: The steel superior in the high-temperature oxidation resistance comprises, by mass%, 0.020% or less C, 0.05-1.50% Si, 0.05-1.00% Mn, 0.030% or less P, 0.030% or less S, 0.50-7.50% Cr, 0.050% or less Al and 0.020% or less N, further one or two elements of 0.015-0.300% Sb and 0.015-0.300% Sn, and the balance Fe with unavoidable impurities. The steel may further include one or more elements of 0.01-0.10% Ti, 0.01-0.10% Nb, 0.0003-0.0030% B, 0.10-0.30% Ni, 0.01-0.10% V and 0.01-1.00% Mo.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种适用于螺旋翅片管的翅片材料并且耐高温抗氧化性优异的钢。解决方案：高温抗氧化性优异的钢包括C：0.020％以下，C：0.05〜1.50％，Mn：0.05〜1.00％，P：0.030％以下，S：0.030％以下，0.50-7.50％的Cr，0.050％以下的Al和0.020％以下的N，另外一个或两个元素为0.015-0.300％的Sb和0.015-0.300％的Sn，余量为Fe，不可避免的杂质。钢可以进一步包括0.01-0.10％Ti，0.01-0.10％Nb，0.0003-0.0030％B，0.10-0.30％Ni，0.01-0.10％V和0.01-1.00％Mo的一种或多种元素。版权（C）2007，JPO＆INPIT

4. 发明专利

JP2006241476A Steel excellent in sulfuric-acid dew-point corrosion resistance 有权
标题翻译：优良的硫酸耐腐蚀耐腐蚀性
公开(公告)号：JP2006241476A
公开(公告)日：2006-09-14
申请号：JP2005054246
申请日：2005-02-28
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO TOSHIHARU , NISHIMURA SATORU , USAMI AKIRA
IPC分类号： C22C38/00 , C22C38/60
CPC分类号： C21D6/005 , C22C38/004 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/20 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide steel which secures excellent corrosion resistance under the sulfuric-acid dew-point corrosion environment of exhaust gas produced by the combustion of a fuel of high S content.
SOLUTION: The steel excellent in sulfuric-acid dew-point corrosion resistance contains, by mass, ≤0.010% C, ≤0.10% Si, 0.05 to 1.00% Cu, ≤0.030% P, ≤0.050% S, ≤0.10% Al and the balance Fe with inevitable impurities. Further, this steel contains one or more elements among Sb, Sn, Cr, Mn, Mo, Ni, Nb, V, Ti and B and one or more elements among Cr, Mo, Ni, Nb, V, Ti, Sn and B.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种在高S含量的燃料的燃烧产生的废气的硫酸露点腐蚀环境下确保优异的耐腐蚀性的钢。解决方案：硫酸露点耐腐蚀性优良的钢中，含有≤0.010％C，≤0.10％Si，0.05〜1.00％Cu，≤0.030％P，≤0.050％S，≤0.10 ％Al，余量为Fe与不可避免的杂质。此外，该钢含有Sb，Sn，Cr，Mn，Mo，Ni，Nb，V，Ti和B中的一种或多种元素，Cr，Mo，Ni，Nb，V，Ti，Sn和B中的一种或多种元素（C）2006年，JPO＆NCIPI

5. 发明专利

JP2004225075A Stainless steel fuel tank or fuel pipe superior in corrosion resistance 审中-公开
公开(公告)号：JP2004225075A
公开(公告)日：2004-08-12
申请号：JP2003011702
申请日：2003-01-20
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO TOSHIHARU , TERAOKA SHINICHI , ONO NAOTO , INOUE HIROSHIGE , KIMURA KEN
IPC分类号： C22C38/00 , C22C38/40 , C22C38/44
摘要： PROBLEM TO BE SOLVED: To provide a fuel tank and a fuel pipe both of which have high press-formability and sufficient resistance to salt corrosion of the outer surface in a gap inevitably present in a weld structure.
SOLUTION: The fuel tank or the fuel pipe superior in corrosion resistance is obtained by forming stainless steel having a metallurgical structure mainly comprising austenite containing 5-40 vol% ferrite. The stainless steel contains 15-25 mass% Cr and 1-8 mass% Ni, may further contain at least either 0.1-3.0 mass% Cu or 0.1-3.0 mass% Mo, and shows a total elongation of 30% or more in a tensile test.
COPYRIGHT: (C)2004,JPO&NCIPI

6. 发明专利

JP2007239095A Acid corrosion resistant steel 有权
标题翻译：酸性耐腐蚀钢
公开(公告)号：JP2007239095A
公开(公告)日：2007-09-20
申请号：JP2007018259
申请日：2007-01-29
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： USAMI AKIRA , SAKAMOTO TOSHIHARU , NISHIMURA SATORU , OKUJIMA MOTOHIRO , TANAKA MUTSUTO
IPC分类号： C22C38/00 , C22C38/38 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide an acid corrosion resistant steel exhibiting excellent corrosion resistance even in any environment of low temperature/low sulfuric acid concentration environments and high temperature/high sulfuric acid concentration environments without adding large quantities of various alloy elements.
SOLUTION: The acid corrosion resistant steel has a composition comprising, by mass, 0.001 to 0.2% C, 0.01 to 3.0% Si, 0.01 to 3.0% Mn, 0.001 to 0.3% Al, 0.01 to 2.0% Cu, 0.01 to 2.0% Cr and 0.01 to 0.2% Co, in which the content of P is regulated to ≤0.035% and the content of S is regulated to ≤0.030%, and, if required, further comprising prescribed amounts of one or more kinds of elements selected from the group consisting of Ni, Mo, W, Sb, Sn, Se, Pb, Nb, V, Ti, Ta, Zr, B, Mg, Ca, Y, La and Ce, and the balance Fe with inevitable impurities.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使在低温/低硫酸浓度环境和高温/高硫酸浓度环境的任何环境中，即使在不加入大量各种合金元素的情况下也能提供耐腐蚀性优异的耐酸腐蚀钢。解决方案：耐酸腐蚀钢具有质量分数为0.001〜0.2％的Si，0.01〜3.0％的Si，0.01〜3.0％的Mn，0.001〜0.3％的Al，0.01〜2.0％的Cu，0.01〜 2.0％Cr和0.01〜0.2％Co，其中P含量调节至≤0.035％，S含量调节至≤0.030％，如果需要，还包含规定量的一种或多种元素选自Ni，Mo，W，Sb，Sn，Se，Pb，Nb，V，Ti，Ta，Zr，B，Mg，Ca，Y，La和Ce，余量为不可避免的杂质。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2004315936A Extremely low carbon-based acid-proof dew point corrosion steel having excellent intergranular fracture resistance 审中-公开
$Extremely low carbon-based acid-proof dew point corrosion steel having excellent intergranular fracture resistance$
公开(公告)号：JP2004315936A
公开(公告)日：2004-11-11
申请号：JP2003114468
申请日：2003-04-18
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO TOSHIHARU , NISHIMURA SATORU , USAMI AKIRA
IPC分类号： C22C38/00 , C22C38/16 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel which exhibits satisfactory corrosion resistance in an acid dew point corrosive environment while maintaining high workability by preventing intergranular fracture on working.
SOLUTION: The extra-low carbon-based acid-proof dew point corrosion steel has a composition comprising, by mass, ≤0.0100% C, 0.1 to 2.0% Si, ≤1.0% Mn, ≤0.05% P, ≤0.05% S, 0.05 to 1.0% Cu, ≤0.10% Al, ≤0.020% N and 0.0005 to 0.0050% B, and the balance Fe with subordinate components and/or inevitable impurities, and has a structure essentially consisting of ferrite with a mean crystal grain size of ≤100 μm. The content of C is desirably controlled to ≤0.0050%. If required, one or more kinds of metals selected from ≤1.0% Cr, ≤1.0% Mo, ≤0.5% Ni, ≤0.1% Nb, ≤0.1% V, ≤0.1% Ti and 0.01 to 0.2% Sn are incorporated therein.
COPYRIGHT: (C)2005,JPO&NCIPI

8. 发明专利

JP2004263235A Sulfuric acid dew-point corrosion-resistant cold-rolled steel sheet for heat-transfer element of air preheater, and method for manufacturing the same 有权
标题翻译：用于空气预热器的传热元件的硫酸耐腐蚀耐腐蚀性冷轧钢板及其制造方法
公开(公告)号：JP2004263235A
公开(公告)日：2004-09-24
申请号：JP2003053797
申请日：2003-02-28
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO TOSHIHARU , NISHIMURA SATORU , USAMI AKIRA
IPC分类号： F23L15/00 , C22C38/00 , C22C38/16 , C22C38/60
CPC分类号： Y02E20/348
摘要： PROBLEM TO BE SOLVED: To provide, at low cost, a steel sheet for an air preheater element capable of demonstrating corrosion resistance equivalent or superior to that of known steel in an acid dew-point corrosive environment, and a method for manufacturing the same.
SOLUTION: The sulfuric acid dew-point corrosion-resistant cold-rolled steel sheet for a heat transfer element of an air preheater contains, by mass, ≤ 0.1500% C, 0.1 to 2.0% Si, ≤ 1.0% Mn, ≤ 0.05% P, ≤ 0.05% S, 0.05 to 1.0% Cu, ≤ 0.10% Al and ≤ 0.020% N, and the balance Fe with accompanying components and/or inevitable impurities. The elongation by a tension test directly after cold rolling is ≥ 1%.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：为了低成本地提供能够证明在酸性露点腐蚀性环境中等同于或优于已知钢的耐腐蚀性的空气预热元件用钢板，以及制造方法一样。解决方案：用于空气预热器的传热元件的硫酸露点耐腐蚀冷轧钢板以质量计含有≤0.100％的C，0.1-2.0％的Si，≤1.0％的Mn，≤ 0.05％P，≤0.05％S，0.05〜1.0％Cu，≤0.10％Al，≤0.020％N，余量为Fe，伴随成分和/或不可避免的杂质。冷轧后直接拉伸试验的伸长率≥1％。版权所有（C）2004，JPO＆NCIPI

9. 发明专利

JP2005179720A Steel sheet for welded structure having excellent corrosion resistance and mechanical property in natural gas-fired boiler exhaust gas atmosphere, and welded joint 审中-公开
标题翻译：焊接结构钢在自然燃气锅炉排气中的耐腐蚀性和机械性能优良的焊接结构和焊接接头
公开(公告)号：JP2005179720A
公开(公告)日：2005-07-07
申请号：JP2003420584
申请日：2003-12-18
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO TOSHIHARU , ABE MASAYUKI , USAMI AKIRA , NISHIMURA SATORU , TSUZUKI TAKESHI , TANAKA MUTSUTO
IPC分类号： B23K9/00 , B23K101/14 , C22C38/00 , C22C38/34 , C22C38/50
摘要： PROBLEM TO BE SOLVED: To provide a technique for providing satisfactory mechanical properties such as strength and toughness of a welded joint of Cr-containing steel in which the content of C harmfully acting on corrosion resistance and weldability is extremely reduced.
SOLUTION: The steel sheet for a welded structure having excellent corrosion resistance and mechanical properties in a natural gas-fired boiler exhaust gas environment has a composition containing, by mass, ≤0.010% C, 0.05 to 2.0% Si, 0.05 to 0.50% Mn, ≤0.050% P, ≤0.0100% S, 6.0 to 9.0% Cr, ≤0.100% Al, Ti:3×(C+N) to 0.50% and ≤0.020% N, and, if required, further one or more metals selected from Cu, Ni, Mo, Nb and V, and the balance Fe with inevitable impurities, has a metallic structure comprising polygonal ferrite, and has Vickers hardness of 110 to 180. The welded joint is obtained by using the steel sheet.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种技术，其提供令人满意的机械性能，例如耐腐蚀性和焊接性有害的C含量极度降低的含Cr钢的焊接接头的强度和韧性。解决方案：在天然气燃烧锅炉废气环境中具有优异的耐腐蚀性和机械性能的焊接结构钢板具有以质量％≤0.010％C，0.05-2.0％的Si，0.05至 0.50％Mn，≤0.050％P，≤0.0100％S，6.0〜9.0％Cr，≤0.100％Al，Ti：3×（C + N）〜0.50％，≤0.020％N，如果需要，或更多选自Cu，Ni，Mo，Nb和V的金属，余量为Fe的不可避免的杂质，具有包含多边形铁素体的金属结构，维氏硬度为110〜180度。焊接接头通过使用钢板。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2004323907A Ferritic stainless steel for automobile exhaust system member having excellent initial rust resistance 审中-公开
公开(公告)号：JP2004323907A
公开(公告)日：2004-11-18
申请号：JP2003119410
申请日：2003-04-24
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO TOSHIHARU , TERAOKA SHINICHI , MATSUHASHI AKIRA
IPC分类号： C22C38/00 , C22C38/28 , C22C38/32
摘要： PROBLEM TO BE SOLVED: To provide a ferritic stainless steel for an automobile exhaust system member whose resistance to initial rust is satisfied at as low a cost as possible without damaging the original functions required for an automobile exhaust system member such as high temperature strength, scale peeling resistance, formability, corrosion resistance to exhaust gas condensation water and corrosion resistance to a salt environment.
SOLUTION: The ferritic stainless steel has a composition comprising, by mass, ≤0.0100% C, 0.05 to 0.80% Si, ≤0.8% Mn, ≤0.050% P, ≤0.0030% S, 11.5 to 13.5% Cr, 0.05 to 0.50% Ti, ≤0.100% Al and ≤0.02% N, and the balance Fe with inevitable impurities, wherein the number of inclusions containing Ca per mm
2 in any optional cross-section is

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