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31. 发明专利

JP2005305303A Method for preventing rust of steel and coated steel 有权
标题翻译：防止钢和镀层钢的方法
公开(公告)号：JP2005305303A
公开(公告)日：2005-11-04
申请号：JP2004125765
申请日：2004-04-21
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： USAMI AKIRA , KATO KENJI , NAGASAWA SHIN
IPC分类号： B05D5/00 , B05D7/14 , B32B15/08 , B32B15/092 , C23F11/00
摘要： PROBLEM TO BE SOLVED: To provide economically a method for primarily or secondarily preventing rusting and a rust-prevented steel for shipping, civil engineering, construction and plants, with substantially improved rust-preventing performance.
SOLUTION: The coated steel consists of a substrate steel comprising a corrosion-resistant steel for welding structures containing 0.1-0.7 mass% of Cu and the balance Fe with inevitable impurities and an inorganic zinc-rich primer layer of a thickness of 5-30 μm formed on the substrate material and containing a Zn-Mg alloy powder which contains 0.3-10 mass% of Mg, based on remaining Zn and has grain sizes of 1-15 μm. A method for preventing rusting of a steel is also provided.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：待解决的问题：为了经济地提供用于船舶，土木工程，建筑和工厂的主要或次要防止生锈的方法和防锈钢，具有显着提高的防锈性能。解决方案：涂覆钢包括一种基材钢，其包含用于焊接结构的耐腐蚀钢，其含有0.1-0.7质量％的Cu，余量为不可避免的杂质，以及厚度为5的无机富锌底漆层 -30μm，并且含有基于剩余的Zn含有0.3-10质量％的Mg的Zn-Mg合金粉末，并且具有1-15μm的晶粒尺寸。还提供了防止钢的生锈的方法。版权所有（C）2006，JPO＆NCIPI

32. 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

33. 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

34. 发明专利

JP2004090045A Gas shielded arc welding wire for low alloy steel excellent in hydrochloric acid resistance and sulfuric acid resistance, and gas shielded arc welding method using same 有权
公开(公告)号：JP2004090045A
公开(公告)日：2004-03-25
申请号：JP2002255492
申请日：2002-08-30
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OKITA SHIGERU , KOJIMA KAZUHIRO , USAMI AKIRA , KIMOTO ISAMU
IPC分类号： B23K9/173 , B23K35/30
摘要： PROBLEM TO BE SOLVED: To provide a gas shielded arc welding steel wire which is excellent in corrosion resistance, is securable a satisfactory weldability, and can form a weld metal part excellent in strength and toughness on impact with respect to the welding wire which is used for welding a sulfuric acid dewpoint corrosion resistant steel capable of obtaining excellent corrosion resistance under the environment of concentrated sulfuric acid and concentrated hydrochloric acid, and to provide a welding method using the wire.
SOLUTION: the steel wire for gas shielded arc welding excellent in resistances to hydrochloric acid and sulfuric acid contains C of 0.02 to 0.2 %, Si of 0.2 to 1.5 %, Mn of 0.5 to 2.5 %, P of 0.03 % or less, S of 0.02 % or less, O of 0.003 to 0.05 %, Sb of 0.01 to 0.2 %, and Ni of 0.1 to 1 % in mass % to the whole of wire mass. Moreover, the residuals are of Fe and inevitable impurities. An arc welding is performed in an atmosphere of gaseous CO
2 , mixed gas of CO
2 and Ar, etc. using the wire.
COPYRIGHT: (C)2004,JPO

35. 发明专利

JP2004090042A Flux cored wire for gas shielded arc welding of low alloy steel excellent in resistance to hydrochloric acid and sulfuric acid 有权
公开(公告)号：JP2004090042A
公开(公告)日：2004-03-25
申请号：JP2002255345
申请日：2002-08-30
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OKITA SHIGERU , KOJIMA KAZUHIRO , USAMI AKIRA , KURAMATA SATORU , SASAKI MASAHITO
IPC分类号： B23K35/30 , B23K35/368
摘要： PROBLEM TO BE SOLVED: To obtain a weld metal excellent in resistance to sulfuric acid and hydrochloric acid, and to aim at the improvement of the resistances to sulfuric acid and hydrochloric acid keeping satisfactory weldability.
SOLUTION: A wire for gas shielded arc welding is filled up with infilling flux in a steel outer sheath. Moreover, the wire contains C of 0.005 to 0.15 %, Si of 0.1 to 2 %, Mn of 0.2 to 3 %, P of 0.03 % or less, S of 0.03 % or less, Cu of 0.1 to 1 %, Ni of 0.1 to 0.65 %, Sb of 0.01 to 0.5 %, and Fe and inevitable impurities as the residuals in mass % to the whole wire mass in either one of the steel outer sheath or the infilling flux or both of those.
COPYRIGHT: (C)2004,JPO

36. 发明专利

JP2003064491A Method for preventing corrosion of sulfuric acid tank, and sulfuric acid tank having excellent corrosion resistance 有权
标题翻译：防止硫酸盐腐蚀的方法和具有优异耐腐蚀性的硫酸罐
公开(公告)号：JP2003064491A
公开(公告)日：2003-03-05
申请号：JP2001249663
申请日：2001-08-20
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： USAMI AKIRA
IPC分类号： B65D90/22 , B65D90/34 , C22C38/00 , C22C38/60 , C23F15/00
摘要： PROBLEM TO BE SOLVED: To provide a method for preventing the corrosion of a sulfuric acid tank, and to provide a sulfuric acid tank which has excellent corrosion resistance.
SOLUTION: The local corrosion of steel for welding structures in contact with the gas-liquid boundary of a sulfuric acid tank conveying or storing sulfuric acid with a concentration of ≥70 mass% is prevented. In this method for preventing the corrosion of the sulfuric acid tank, on exhaust of loaded sulfuric acid, air is blown from a position within 10% of the height of the sulfuric acid liquid in the full load condition from the floor face of the tank into the sulfuric acid. The sulfuric acid tank having excellent corrosion resistance is provided with a means of blowing air from a position within 10% of the height of the sulfuric acid in the full load condition from the floor face of the tank into the sulfuric acid, or consists of steel having specified components.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种防止硫酸罐腐蚀的方法，并提供耐腐蚀性优异的硫酸罐。解决方案：防止输送或储存浓度> 70质量％的硫酸的硫酸罐的气液界面接触焊接结构的钢的局部腐蚀。在这种防止硫酸罐腐蚀的方法中，在装载硫酸的排气中，从处于满载状态的硫酸液体的10％以内的位置，从容器的地面吹出空气，硫酸。具有优异耐腐蚀性的硫酸罐具有从满载状态的硫酸高度的10％以内的位置从罐的底面向硫酸吹入空气的方法，或由钢具有指定的组件。

37. 发明专利

JP2959898B2 Zn-Al plating for high-tensile steel 失效
公开(公告)号：JP2959898B2
公开(公告)日：1999-10-06
申请号：JP32206191
申请日：1991-12-05
申请人：新日本製鐵株式会社
发明人： INOE HISASHI , TANABE KOJI , USAMI AKIRA , MASUDA KAZUHIRO
IPC分类号： C22C38/00 , C22C38/16 , C22C38/50 , C23C2/06 , C23C2/12

38. 发明专利

AU2009292610B2 High-strength steel plate and producing method therefor 未知
公开(公告)号：AU2009292610B2
公开(公告)日：2011-02-10
申请号：AU2009292610
申请日：2009-10-13
申请人： NIPPON STEEL CORP
发明人： KUMAGAI TATSUYA , USAMI AKIRA , OKA MASATAKE
IPC分类号： C22C38/00
摘要： A high-strength steel plate includes the following composition: 0.18 to 0.23 mass% of C; 0.1 to 0.5 mass% of Si; 1.0 to 2.0 mass% of Mn; 0.020 mass% or less of P; 0.010 mass% or less of S; greater than 0.5 mass% and equal to or less than 3.0 mass% of Cu, 0.25 to 2.0 mass% ofNi; 0.003 to 0.10 mass% ofNb; 0.05 to 0.15 mass% of A1; 0.0003 to 0.0030 mass% of B; 0.006 mass% or less of N; and a balance composed of Fe and inevitable impurities. A weld crack sensitivity index Pcm of the high-strength steel plate is calculated by Pcm=[C]+[Si]/30+[Mn]/20+[Cu]/20+[Ni]/60+[Cr]/20+[Mo]/15+[V]/10+5[B], and is 0.39 mass% or less. The A c3 transformation point is equal to or less than 850°C, the percentage value of a martensite structure is equal to or greater than 90%, the yield strength is equal to or greater than 1300 MPa, and the tensile strength is equal to or greater than 1400 MPa and equal to or less than 1650 MPa. If the tensile strength is less than 1550 MPa, the prior austenite grain size number N³ satisfies the formula N³¥([TS]-1400)×0.006+7.0, and if the tensile strength is equal to or greater than 1550 MPa, the prior austenite grain size number N³ satisfies the formula N³¥([TS]-1550)×0.01+7.9.

39. 发明公开

EP1460145A4 LOW ALLOY STEEL EXCELLENT IN RESISTANCE TO CORROSION BY HYDROCHLORIC ACID AND CORROSION BY SULFURIC ACID AND WELD JOINT COMPRISING THE SAME 有权
标题翻译：以优异的盐酸和硫酸的抗腐蚀性和那些含有WELD低合金钢
公开(公告)号：EP1460145A4
公开(公告)日：2005-03-09
申请号：EP02803506
申请日：2002-11-15
申请人： NIPPON STEEL CORP
发明人： USAMI AKIRA , SAKAMOTO SHUNJI , NISHIMURA SATOSHI , OKUSHIMA MOTOHIRO , KUSUNOKI TAKASHI
IPC分类号： B23K9/23 , B23K35/30 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/60
CPC分类号： C22C38/02 , B23K35/3053 , C21D8/0205 , C21D8/0273 , C21D9/50 , C21D2211/005 , C22C38/004 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/60
摘要： A low alloy steel which has a chemical composition, in mass %,: C: 0.001 to 0.2 %, Si: 0.01 to 2.5 %, Mn: 0.1 to 2 %, Cu: 0.1 to 1 %, Mo: 0.001 to 1 %, Sb: 0.01 to 0.2 %, P: 0.05 % or less, S: 0.05 % or less, and balance: Fe and inevitable impurities, and exhibits an index of resistance to acid corrosion AI satisfying the formula: AI >= 0, wherein AI is given by the following equation: AI/10000 = 0.0005 + 0.045 X Sb % - C % X Mo % and a weld joint comprising the low alloy steel. The low alloy steel and the weld joint are excellent in both the resistance to corrosion by hydrochloric acid and the resistance to corrosion by sulfuric acid.
摘要翻译：本发明提供的低合金钢和焊接接头在耐盐酸腐蚀性及耐硫酸腐蚀物过硬，所述低合金钢含有按质量，含有C：0.001〜0.2％以下，Si：0.01〜2.5％以下，Mn： 0.1至2％的Cu：0.1〜1％以下，Mo：0.001〜1％，锑：0.01〜0.2％，P：0.05％或以下，S：0.05％以下，余量由Fe和不可避免的杂质的 ; 和Said低合金钢的酸的耐蚀性指数AI是零或正的。在这里，说的Al由以下表达式给出， AI / 10,000 = 0.0005 + 0.045 X Sb的％ - C％X％的Mo，其中，％表示质量％。

40. 发明公开

EP2290116A4 THICK STEEL SHEET HAVING HIGH STRENGTH AND METHOD FOR PRODUCING SAME 有权转让
标题翻译：用于生产高强度和方法厚钢板
公开(公告)号：EP2290116A4
公开(公告)日：2011-05-25
申请号：EP09822871
申请日：2009-10-13
申请人： NIPPON STEEL CORP
发明人： KUMAGAI TATSUYA , USAMI AKIRA , OKA MASAHARU
IPC分类号： C22C38/00 , B21B1/38 , B21B3/00 , C21D8/02 , C22C38/16 , C22C38/58
CPC分类号： C22C38/02 , B66C23/62 , C21D8/02 , C21D8/0205 , C21D8/0226 , C21D9/46 , C21D2211/008 , C22C38/002 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/42 , C22C38/48 , C22C38/54 , C22C38/58

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