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1. 发明专利

JP2010236930A Method of evaluating brittle crack propagation stop property 有权
标题翻译：评估脆性裂缝扩散停止性质的方法
公开(公告)号：JP2010236930A
公开(公告)日：2010-10-21
申请号：JP2009083133
申请日：2009-03-30
申请人： Nippon Steel Corp , Osaka Gas Co Ltd , Sumitomo Metal Ind Ltd , 住友金属工業株式会社 , 大阪瓦斯株式会社 , 新日本製鐵株式会社
发明人： KAWABATA TOMOYA , ARIMOCHI KAZUSHIGE , ONISHI KAZUSHI , KUBO NAOSHIGE , TAKADA MASANORI , YAMASHITA MASATERU , INOUE TAKEHIRO , SAITO NAOKI , OKUJIMA MOTOHIRO
IPC分类号： G01N3/00 , G01N3/18
摘要： PROBLEM TO BE SOLVED: To provide a method of evaluating brittle crack propagation stop properties capable of evaluating brittle crack propagation stop properties of materials under an extremely low-temperature environment while reducing test costs. SOLUTION: In the method of evaluating brittle crack propagation stop properties of materials by generating cracks in a test piece by executing a tensile test to the test piece, the test piece comprises a sample material made of a material to be evaluated, a brittle material that is welded to one end side of the sample material in a direction orthogonal to a tension direction in the tensile test and has toughness smaller than that of the sample material, and an auxiliary material welded to the other end side of the sample material in the orthogonal direction. The cracks occur forcibly in the brittle material, and load stress in the tensile test is set such that the forcibly generated cracks are stopped at the sample material. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种评估脆性裂纹扩展停止性能的方法，其能够评估在极低温环境下的材料的脆性裂纹扩展停止性能，同时降低试验成本。解决方案：在通过对试验片进行拉伸试验来测试试件中产生裂纹的材料的脆性裂纹扩展停止性能的评价方法中，试验片包括由待评价材料制成的试样材料，脆性材料在拉伸试验中沿与拉伸方向正交的方向焊接到样品材料的一端侧，并且具有小于样品材料的韧性，以及焊接到样品材料的另一端侧的辅助材料在正交方向。在脆性材料中强制出现裂纹，并且拉伸试验中的载荷应力被设定为使得强制产生的裂纹停留在样品材料上。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2011241419A Thick steel plate for low temperature, and method of manufacturing the same 有权
标题翻译：用于低温的厚钢板及其制造方法
公开(公告)号：JP2011241419A
公开(公告)日：2011-12-01
申请号：JP2010112910
申请日：2010-05-17
申请人： Osaka Gas Co Ltd , Sumitomo Metal Ind Ltd , 住友金属工業株式会社 , 大阪瓦斯株式会社
发明人： KAWABATA TOMOYA , ARIMOCHI KAZUSHIGE , KAMO TAKAHIRO , ONISHI KAZUSHI , ANDO RYUICHI , YAMASHITA MASATERU , IWAHASHI HIROSHI , FUCHIMOTO YOICHI , KUBO NAOSHIGE , TAKADA MASANORI
IPC分类号： C22C38/00 , B21B1/38 , B21B3/00 , C21D8/02 , C22C38/08 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To inexpensively provide a Ni reduced type thick steel plate for low temperature excelling in breakage resistant safety like 9% Ni steel even in a low-temperature environment.SOLUTION: This thick steel plate for low temperature excelling in breakage resistant safety contains, by mass%, 0.01-0.12% of C, 0.01-0.3% of Si, 0.4-2.0% of Mn, ≤0.05% of P, ≤0.008% of S, >5.0% and
摘要翻译：要解决的问题：即使在低温环境下，也可以廉价地提供一种Ni还原型厚钢板，用于低耐破坏性安全性，如9％Ni钢。
解决方案：这种耐低温耐腐蚀安全性的厚钢板以质量％计含有C 0.01-0.12％，Si：0.01〜0.3％，Mn：0.4〜2.0％，P：0.05％ ≤0.008％的S，> 5.0％和<8.0％的Ni，0.002-0.08％的Al和≤0.0050％的N，其中残余部分包括Fe和杂质; 常温屈服强度≥590MPa; 在板厚为（1/4）t的位置处的残余γ量为≥3.0体积％; 平均有效晶粒尺寸≤5.5μm; 并且由下式（1）表示的值为≥1.3。还提供了这种制造方法。 y，-165℃ /σ y，RT （1）其中σ y，-165℃，σ y，RT 分别为-165℃的屈服强度[MPa]和常温下的屈服强度。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2008184646A Method for manufacturing high-tensile-strength thick steel plate 有权
标题翻译：制造高强度厚钢板的方法
公开(公告)号：JP2008184646A
公开(公告)日：2008-08-14
申请号：JP2007018671
申请日：2007-01-30
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KAMO TAKAHIRO , SAKAIBORI HIDEO , FUJIWARA TOMOYA , ONISHI KAZUSHI
IPC分类号： C21D8/02 , C22C38/00 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a high-tensile-strength thick steel plate which has little dispersion of toughness in the thickness direction at a low cost.
SOLUTION: This manufacturing method comprises the steps of: heating a slab which contains 0.0005 to 0.0020% B to 900 to 1,180°C; rolling the slab in such a condition that a cumulative rolling reduction at a temperature of 850°C or lower is 50% or more and the rolling-finishing temperature is 680°C or higher; starting water cooling at a plate temperature of 650°C or higher after 20 seconds or a longer period of time have elapsed after the end of the rolling step; and stopping the water cooling at a plate temperature of 200°C or lower. After the water cooling has been stopped, the plate may be further retained at 500 to 650°C for a period of time that satisfies the relation of retention time (minute) ≥ plate thickness (mm)/2.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种低成本地制造厚度方向的韧性差很小的高强度的厚钢板的制造方法。解决方案：该制造方法包括以下步骤：将含有0.0005至0.0020％B的板坯加热至900至1180℃; 在850℃以下的累积压下率为50％以上，轧制终轧温度为680℃以上的条件下轧制板坯; 在轧制步骤结束后经过20秒钟或更长时间的温度下，在650℃以上的板温度下开始水冷却; 并在200℃或更低的板温度下停止水冷。在水冷停止后，可以将板在500〜650℃进一步保持一段时间，以满足保持时间（分钟）≥板厚（mm）/ 2的关系。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2011157619A Weld joint excellent in characteristics of brittle fracture resistance 有权
$Weld joint excellent in characteristics of brittle fracture resistance$
标题翻译：焊接接头优异的脆性断裂特性
公开(公告)号：JP2011157619A
公开(公告)日：2011-08-18
申请号：JP2010022888
申请日：2010-02-04
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KAWABATA TOMOYA , SAKAIBORI HIDEO , ONISHI KAZUSHI
IPC分类号： C22C38/00 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To economically obtain a weld joint excellent in characteristics of brittle fracture resistance.
SOLUTION: The weld joint has a chemical composition containing, by mass%, 0.01-0.2% C, 0.01-1.0% Si, 0.1-2.0% Mn, ≤0.007% P, ≤0.002% S, ≤0.10% Al, and the balance Fe with impurities, and is obtained by welding a base material having a tensile strength of ≥780 MPa. In the weld joint excellent in characteristics of brittle fracture resistance, a tensile strength σ
TW (MPa) of a weld metal and a tensile strength σ
TB (MPa) of the base material satisfy formula (1): 938+2,000(σ
TW /σ
TB )≤3.05σ
TB .
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了经济地获得耐脆性断裂特性优异的焊接接头。
解决方案：焊接接头具有以质量％计含有0.01-0.2％C，0.01-1.0％Si，0.1-2.0％Mn，≤0.007％P，≤0.002％S，≤0.10％Al ，余量为Fe与杂质，并且通过焊接拉伸强度≥780MPa的基材获得。在耐熔断裂特性优异的焊接接头中，焊接金属的拉伸强度σSB SB（MPa）和基体的拉伸强度σSB SB（MPa）材料满足公式（1）：938 + 2,000（σ TW /σ TB ）≤3.05σ TB 。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2010053453A Steel sheet having excellent fatigue crack propagation resistance and production method thereof 有权
标题翻译：具有优异的耐疲劳裂纹扩展电阻的钢板及其生产方法
公开(公告)号：JP2010053453A
公开(公告)日：2010-03-11
申请号：JP2009273253
申请日：2009-12-01
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KATSUMOTO HIROSHI , ONISHI KAZUSHI , YODA NOBORU , FUJIWARA TOMOYA , ARIMOCHI KAZUSHIGE
IPC分类号： C22C38/00 , C21D8/02 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet excellent in fatigue crack resisting performance, having enhanced resistance to propagation of cracks inherent in a weld zone of a welded structure or the like, the propagation occurring caused by repeated stress applied to the cracks, and to provide a production method thereof.
SOLUTION: The steel sheet for a marine structure is provided which has a chemical composition comprising, by mass, 0.01 to 0.1% C, 0.03 to 0.6% Si, 0.3 to 2% Mn, 0.001 to 0.1% sol.Al, 0.0005 to 0.008% N, and the balance Fe with impurities, and also has a metallic structure composed of a bainitic structure of 60 to 85% by area ratio, a martensitic structure and a pearlitic structure of 0 to 5% in total, and the balance ferritic structure, wherein the impact absorption energy vE-20 in a Charpy impact test is ≥387 J, and a production method thereof is also provided.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供耐疲劳裂纹性能优异的钢板，对焊接结构等的焊接区域固有的裂纹具有增强的抗扩展性，由于施加到焊接结构等的重复应力引起的传播裂纹，并提供其制造方法。解决方案：提供一种海洋结构用钢板，其具有以质量计含有0.01〜0.1％C，0.03〜0.6％Si，0.3〜2％Mn，0.001〜0.1％sol.Al， 0.0005〜0.008％N，余量为Fe与杂质，并且具有由面积比为60〜85的贝氏体组织构成的金属组织，总共为0〜5％的马氏体组织和珠光体组织，平衡铁素体结构，其中夏比冲击试验中的冲击吸收能vE-20为≥387J，并且还提供其制造方法。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2009202224A Evaluation method of partial penetration welding in fatigue resistance steel 审中-公开
标题翻译：耐疲劳钢部分渗透焊接评估方法
公开(公告)号：JP2009202224A
公开(公告)日：2009-09-10
申请号：JP2008049662
申请日：2008-02-29
申请人： Sumitomo Metal Ind Ltd , Takada Kiko Kk , 住友金属工業株式会社 , 高田機工株式会社
发明人： TAKAHANE SHINJI , YAMANO TATSUYA , YASUDA OSAMU , YODA NOBORU , ONISHI KAZUSHI , ARIMOCHI KAZUSHIGE , NISHIO MASARU
IPC分类号： B23K31/00 , B23K103/04
摘要： PROBLEM TO BE SOLVED: To provide a technique of quantitatively evaluating improved quantity of fatigue strength in the case of applying fatigue resistance steel to a steel deck plate structure.
SOLUTION: In a method of evaluating partial penetration welding in fatigue resistance steel; near a weld zone A in a steel deck plate structure to which fatigue resistance steel is applied, there is arranged in abutment a focusing type oblique angle probe 7 that can emit an ultrasonic flaw inspection beam at a prescribed oblique angle from the abutting face. By measuring an echo height on the incident angle line of the inspection beam of the probe, and thereby referring to a calculation curve prepared in advance using a notch specimen, the penetration prediction amount of the weld zone is determined.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种在对钢甲板结构施加耐疲劳性钢的情况下，定量评价疲劳强度提高量的技术。
解决方案：在耐疲劳性钢中评估部分穿透焊接的方法中; 在施加耐疲劳钢的钢甲板板结构中的焊接区域A附近，配置有可以从邻接面以规定的倾斜角度发射超声波探伤光束的聚焦型斜角探头7。通过测量探头的检查光束的入射角线上的回波高度，从而参考使用切口试样预先准备的计算曲线，确定焊接区域的穿透预测量。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2009180646A Evaluating method of partial penetration welding in fatigue-resistant steel 审中-公开
标题翻译：耐疲劳钢部分渗透焊接评估方法
公开(公告)号：JP2009180646A
公开(公告)日：2009-08-13
申请号：JP2008020821
申请日：2008-01-31
申请人： Sumitomo Metal Ind Ltd , Takada Kiko Kk , 住友金属工業株式会社 , 高田機工株式会社
发明人： TAKAHANE SHINJI , YAMANO TATSUYA , YASUDA OSAMU , YODA NOBORU , ONISHI KAZUSHI , ARIMOCHI KAZUSHIGE , NISHIO MASARU
IPC分类号： G01N29/04 , B23K31/00 , B23K103/04
摘要： PROBLEM TO BE SOLVED: To provide a technology of quantitatively evaluating the improving amount of fatigue strength when fatigue-resistant steel is applied to a steel floor system structure.
SOLUTION: In this evaluating method of partial penetration welding in fatigue-resistant steel, a focused oblique angle probe 7 capable of radiating an ultrasonic flaw detection beam is abutted and arranged near a welding section A in the steel floor system structure applied with the fatigue-resistant steel from an abutting surface at a predetermined inclined angle, and the echo height on the incidence angle line of the flaw detection beam of the probe is measured. Referring to a calculation curve previously prepared using a notched specimen, the penetration prediction amount of the welding section is calculated.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种定量评价将耐疲劳钢应用于钢地板系结构时的疲劳强度提高量的技术。解决方案：在耐疲劳钢部分穿透焊接的评估方法中，能够辐射超声波探伤光束的聚焦斜角探测器7在施加了钢板地板系统结构的焊接部A附近测量来自预定倾斜角度的抵接表面的耐疲劳钢以及探针的探伤光束的入射角线上的回波高度。参考先前使用缺口试样制备的计算曲线，计算焊接部分的穿透预测量。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2008007843A Steel sheet for cold-worked steel pipe 审中-公开
标题翻译：冷轧钢管钢板
公开(公告)号：JP2008007843A
公开(公告)日：2008-01-17
申请号：JP2006181939
申请日：2006-06-30
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SETA ICHIRO , ICHINOHE YASUO , NAKAMURA HIROSHI , FUJIWARA TOMOYA , NISHIO MASARU , ONISHI KAZUSHI , KAWAMOTO MASAYUKI
IPC分类号： C22C38/00 , C21C7/076 , C21D8/02 , C22C38/14 , C22C38/58
CPC分类号： Y02P10/242
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet for a cold-worked steel pipe capable of forming a column-diaphragm joined structure having satisfactory toughness. SOLUTION: The steel sheet for a cold-worked steel pipe with a wall thickness of 16 to 100 mm has a composition comprising, by mass, 0.05 to 0.18% C, 0.001 to 0.55% Si, 0.8 to 1.6% Mn, ≤0.020% P, ≤0.005% S, 0.001 to 0.060% Al, 0.005 to 0.035% Ti and 0.0015 to 0.006%N, and the balance Fe with impurities, and in which the content of O is defined to ≤0.0050%, fHAZ defined by formula (a) is ≤0.46%, a carbon equivalent Ceq is 0.30 to 0.45%, a weld crack sensitivity composition Pcm is 0.10 to 0.29%, the cleanliness in the region of 2 mm from the surface of the steel pipe is 0.005 to 0.1%, yield strength is 325 to 540 MPa, tensile strength is 490 to 680 MPa, and the ratio of the yield strength/tensile strength is ≤0.80: fHAZ=C+Mn/8+6P+6S+12N-4Ti... formula (a). COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种能够形成具有令人满意的韧性的柱 - 隔膜接合结构的冷加工钢管的钢板。解决方案：壁厚为16〜100mm的冷加工钢管用钢板，其组成为：含有0.05〜0.18％的C，0.001〜0.55％的Si，0.8〜1.6％的Mn， ≤0.020％P，≤0.005％S，0.001〜0.060％Al，0.005〜0.035％Ti和0.0015〜0.006％N，余量为Fe与杂质，O含量定义为≤0.0050％，fHAZ 由式（a）定义为≤0.46％，碳当量Ceq为0.30〜0.45％，焊接裂纹敏感性组成Pcm为0.10〜0.29％，距离钢管表面2mm的区域的清洁度为0.005 至0.1％，屈服强度为325〜540MPa，拉伸强度为490〜680MPa，屈服强度/拉伸强度比为≤0.80:fHAZ= C + Mn / 8 + 6P + 6S + 12N-4Ti。公式（a）。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2005336514A Steel sheet having excellent fatigue crack propagation resistance and its production method 有权
标题翻译：具有优异的脆性裂纹扩展电阻及其生产方法的钢板
公开(公告)号：JP2005336514A
公开(公告)日：2005-12-08
申请号：JP2004153572
申请日：2004-05-24
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KATSUMOTO HIROSHI , ONISHI KAZUSHI , YODA NOBORU , FUJIWARA TOMOYA , ARIMOCHI KAZUSHIGE
IPC分类号： B21B1/38 , B21B45/02 , B21D1/05 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/06 , C22C38/58
CPC分类号： C22C38/02 , C21D8/02 , C21D9/46 , C21D2211/002 , C21D2211/005 , C22C38/04
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet having excellent fatigue crack resisting performance enhanced in resistance to that cracks inherent in a weld zone of a welded structure or the liken progress by being applied with repeated stress, and to provide its production method.
SOLUTION: The steel sheet has a composition containing, by mass, 0.01 to 0.1% C, 0.03 to 0.6% Si, 0.3 to 2% Mn, 0.001 to 0.1% solAl and 0.0005 to 0.008% N, and, if required, comprising one or more kinds of elements selected from at least 1 group among 1 to 3 groups, and the balance Fe with impurities, and has a metallic structure composed of a bainitic structure by ≥30%, in area ratio, a martensitic structure and a pearlitic structure by ≤5% in total, and the balance ferritic structure. The production method uses the steel sheet.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种耐焊接结构的焊接区域固有的裂纹或者通过施加重复应力的耐冲击性提高耐疲劳抗裂性优异的钢板，并且提供其制造方法。钢板的组成为：含有0.01〜0.1％的C，0.03〜0.6％的Si，0.3〜2％的Mn，0.001〜0.1％的溶胶铝和0.0005〜0.008％的N，根据需要包含选自1〜3组中的1种以上的元素，余量为Fe的杂质，具有由贝氏体组织构成的金属组织，面积比为30％以上，马氏体组织和总共有不到5％的珠光体结构，平衡铁素体结构。生产方法采用钢板。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2004143516A Steel sheet having excellent flatness after cooling 审中-公开
公开(公告)号：JP2004143516A
公开(公告)日：2004-05-20
申请号：JP2002308823
申请日：2002-10-23
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： URABE TAKESHI , HASEGAWA KAZUHIKO , ONISHI KAZUSHI , HIEDA SHIGERU
IPC分类号： C22C38/00 , C22C38/06 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet in which transformation stress occurring on cooling is reduced, and which has excellent flatness after cooling.
SOLUTION: The steel sheet comprising, by mass, 0.01 to 0.60% C, 0.01 to 0.60% Si, 0.30 to 2.0% Mn and 0.003 to 0.10% Al, and in which a shrinkage percentage by cooling in a test piece after the completion of transformation on cooling at 30°C/s in the measurement of an expansion by four Master is ≤0.35%. The steel sheet can comprise one or more kinds of metals selected from 0.01 to 1.2% Cu, 0.01 to 10% Ni, 0.01 to 5% Cr, 0.01 to 2% Mo, 0.01 to 0.1% V, 0.005 to 0.1% Nb, 0.005 to 0.1% Ti, 0.0003 to 0.010% B and 0.005 to 0.050% rare earth elements as well. It is preferable that an Ms point expressed by the formula (1) is controlled to ≤400°C since the flatness is made more satisfactory. The formula (1) is expressed by the Ms point (°C)=521-353C-22Si-24Mn-17Ni-18Cr-8Cu-16Mo.
COPYRIGHT: (C)2004,JPO

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