专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JP2008069425A Hot rolled steel sheet having excellent stretch flange property 有权
标题翻译：热轧钢板具有优异的拉伸法兰特性
公开(公告)号：JP2008069425A
公开(公告)日：2008-03-27
申请号：JP2006250741
申请日：2006-09-15
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： MURAKAMI TOSHIO , NOMURA MASAHIRO , MUKAI YOICHI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To secure satisfactory formability for extension flange in a hot rolled steel sheet having strength in a class of ≥980 MPa by relatively simple componential system and process.
SOLUTION: The hot rolled steel sheet has a composition comprising, by mass, 0.03 to 0.20% C, >1.0 to 2.0% Si, 1.0 to 3.0% Mn, ≤0.05% P, ≤0.05% S, and ≤0.005% Nb and ≤0.010% V, Zr, Mo, Ta, Hf and W respectively in such a manner that the total of these seven elements is controlled to ≤0.02%, and comprising ≤0.010% N, and in which, provided that the mass% of Ti is defined as [Ti] and the mass% of N is defined as [N], -0.003%≤[Ti]-3.4[N]≤0.03% is satisfied, comprising 0.0003 to 0.0050% B, and the balance Fe with inevitable impurities, and the main structure is composed of bainite in a fraction of >90%, and the average grain size of the blocks of the bainite is ≤3 μm.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过相对简单的组分系统和工艺，确保具有≥980MPa级的强度的热轧钢板的延伸法兰的令人满意的成型性。解决方案：热轧钢板具有质量分数为0.03〜0.20％的C，1.0〜2.0％的Si，1.0〜3.0％的Mn，≤0.05％的P，≤0.05％的S，≤0.005 ％Nb，≤0.010％V，Zr，Mo，Ta，Hf和W，使得这七种元素的总和控制在≤0.02％，并且包含≤0.010％N，并且其中 Ti的质量％定义为[Ti]，N的质量％定义为[N]，满足-0.003％≤[Ti] -3.4 [N]≤0.03％，含有0.0003〜0.0050％B，平衡Fe与不可避免的杂质，主要结构由贝氏体组成> 90％以上，贝氏体块的平均粒径≤3μm。版权所有（C）2008，JPO＆INPIT

22. 发明专利

JP2008045164A Hot rolled steel sheet having excellent stretch flange formability 有权
标题翻译：热轧钢板具有优异的拉伸法兰可伸缩性
公开(公告)号：JP2008045164A
公开(公告)日：2008-02-28
申请号：JP2006220774
申请日：2006-08-12
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： MURAKAMI TOSHIO , NOMURA MASAHIRO , MUKAI YOICHI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/14 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To secure satisfactory stretch flange formability in a hot rolled steel sheet in a strength class of ≥980 MPa by relatively simple componential system and process.
SOLUTION: The hot rolled steel sheet has a composition comprising, by mass, 0.03 to 0.20% C, 0.9 to 2.0% Si, 1.0 to 3.0% Mn, ≤0.05% P, ≤0.05% S, ≤0.005% Nb, V, Zr, Mo, Ta, Hf and W by ≤0.010%, respectively, and ≤0.02% by the total of these 7 elements, and ≤0.010% N, and in which, provided that the mass% of Ti is defined as [Ti] and the mass% of N is defined as [N], -0.003%≤[Ti]-3.4[N]≤0.03% is satisfied, and comprising 0.0003 to 0.0050% B, and the balance Fe with inevitable impurities, and has a structure composed mainly of bainite in a fraction of ≥90% and a second phase composed of martensite and retained austenite in a fraction of ≤3%.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过相对简单的组分系统和方法，以≥980MPa的强度等级确保热轧钢板的令人满意的拉伸凸缘成形性。解决方案：热轧钢板具有质量分数为0.03〜0.20％的Si，0.9〜2.0％的Si，1.0〜3.0％的Mn，≤0.05％的P，≤0.05％的S，≤0.005％的Nb ，V，Zr，Mo，Ta，Hf和W分别为≤0.010％，并且这些7个元素的总和≤0.02％，≤0.010％N，并且其中，定义Ti的质量％如[Ti]和N的质量％定义为[N]，满足-0.003％≤[Ti] -3.4 [N]≤0.03％，并且包含0.0003至0.0050％的B，余量为Fe与不可避免的杂质，并且具有主要由贝氏体组成的分级≥90％的结构和由马氏体组成的第二相和小于3％的残余奥氏体。版权所有（C）2008，JPO＆INPIT

23. 发明专利

JP2007321211A Hot-rolled material having superior properties of preventing crystal grain from coarsening when carburized at high temperature 有权
标题翻译：具有高温保存的预防晶粒的高温特性的热轧材料在高温下加热
公开(公告)号：JP2007321211A
公开(公告)日：2007-12-13
申请号：JP2006154062
申请日：2006-06-01
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： MURAKAMI TOSHIO , NOMURA MASAHIRO , YAGUCHI HIROSHI , NAGAHAMA MUTSUHISA , SHINTO YOSUKE , TANAKA YOICHI
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a hot-rolled material having superior properties of preventing austenitic crystal grains from coarsening even when carburized at high temperature after having been warm-forged or cold-forged.
SOLUTION: The hot-rolled material has a steel composition comprising 0.10 to 0.30% (which means wt.%, hereinafter the same) C, 0.01 to 1.0% Si, 0.2 to 2.0% Mn, 0.03% or less P, 0.2% or less S, 0.01 to 0.10% Al, 0.003 to 0.030% N, 0.010 to 0.20% Nb and/or Ti, and the balance Fe with unavoidable impurities; and includes precipitates in ferrite, which contain such Nb and/or Ti as to satisfy the following requirements (1) to (4): (1) (average particle size of precipitate (nm)/area rate of precipitate) 4 (nm); (2) average particle size of precipitate: 6 nm or larger; (3) apparent density of precipitate: 20 pieces/μm
2 or higher; and (4) ratio of (amounts of Nb and/or Ti in precipitate)/(amounts of Nb and/or Ti in steel): 95% or more.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种即使在经过锻造或冷锻之后在高温下渗碳也具有优异的防止奥氏体晶粒粗化的热轧材料。解决方案：热轧材料具有0.10〜0.30％（即，重量％，以下相同）C，0.01〜1.0％Si，0.2〜2.0％Mn，0.03％以下P组成的钢组成， 0.2％以下的S，0.01〜0.10％的Al，0.003〜0.030％的N，0.010〜0.20％的Nb和/或Ti，余量为Fe，不可避免的杂质; （1）（1）（沉淀物的平均粒径（nm）/析出物的面积率）<5.0×10（以下），在铁素体中含有析出物，其中含有这些Nb和/或Ti， 4 （纳米）; （2）沉淀物的平均粒径：6nm以上; （3）沉淀物的表观密度：20个/μm2 / SP以上; 和（4）（析出物中的Nb和/或Ti的量）/（钢中的Nb和/或Ti的量）的比例为95％以上。版权所有（C）2008，JPO＆INPIT

24. 发明专利

JP2007277585A High-strength hot-rolled steel sheet excellent in chemical convertibility 审中-公开
标题翻译：高强度热轧钢板优良的化学可转换性
公开(公告)号：JP2007277585A
公开(公告)日：2007-10-25
申请号：JP2006091129
申请日：2006-03-29
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： KAMITSUMA SHINJI , NOMURA MASAHIRO , HASHIMOTO IKUO
IPC分类号： C23C22/78 , C21D9/46 , C22C38/00 , C22C38/06 , C22C38/58 , C23G1/08
摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot-rolled steel sheet which stably exhibits excellent chemical convertibility, even when it contains Mo which is added for enhancing the strength thereof.
SOLUTION: The high-strength hot-rolled steel sheet having improved chemical convertibility satisfies the surface characteristics that the maximum height (Ry) of profile irregularities in the surface is not less than 10 μm and the mean spacing (Sm) of the profile irregularities is not more than 30 μm. Further, this high-strength hot-rolled steel sheet satisfies either, preferably both, of the following characteristics that the profile bearing length ratio (tp40) of the surface is not more than 20%, and the difference between the profile bearing length ratio (tp60) and the profile bearing length ratio (tp40) of the surfaces is not less than 60%.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：待解决的问题：为了提供一种稳定地表现出优异的化学可转换性的高强度热轧钢板，即使其含有添加以提高其强度的Mo也是如此。解决方案：具有改善的化学转化率的高强度热轧钢板满足表面的轮廓不规则性的最大高度（Ry）不小于10μm的表面特性，并且平均间隔（Sm）轮廓不规则不大于30μm。此外，该高强度热轧钢板也满足以下特性，即，表面的型材轴承长度比（tp40）不大于20％，轮廓轴承长度比（ tp60）和表面的型材轴承长度比（tp40）不小于60％。版权所有（C）2008，JPO＆INPIT

25. 发明专利

JP2005281787A High strength cold rolled steel sheet having excellent adhesion of coating film and workability 有权
标题翻译：高强度冷轧钢板，具有优异的涂膜和粘合性
公开(公告)号：JP2005281787A
公开(公告)日：2005-10-13
申请号：JP2004098520
申请日：2004-03-30
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： OMIYA YOSHINOBU , KAMITSUMA SHINJI , KAMURA MANABU , HASHIMOTO IKUO , NOMURA MASAHIRO
IPC分类号： C22C38/00 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To provide a high strength cold rolled steel sheet having adhesion of a coating film and workability, and having a tensile strength of ≥550 MPa.
SOLUTION: The cold rolled steel sheet is composed of a steel sheet with a composite structure satisfying a prescribed composition and containing prescribed amounts of ferrite, bainite and retained austenite. In the surface of the steel sheet, (I) Mn-Si multiple oxides with a major axis of 0.01 to 5 μm in which the atomic ratio between Mn and Si (Mn/Si) is ≥0.5 are present by ≥10 pieces/100 μm
2 , and further, the coating ratio of oxides consisting mainly of Si to the surface of the steel sheet is ≤10%, and/or (II), when the cross-sections near the surface of the steel sheet are observed by 2,000 magnifications using an SEM (Scanning Electron Microscope), in optional 10 fields, cracks with a width of ≤3 μm and a depth of ≥5 μm are not present.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有涂膜粘附性和加工性，并且拉伸强度≥550MPa的高强度冷轧钢板。解决方案：冷轧钢板由具有规定组成的复合结构的钢板构成，含有规定量的铁素体，贝氏体和残余奥氏体。在钢板表面，Mn（Si / Si）的原子比≥0.5的长轴为0.01〜5μm的（I）Mn-Si多重氧化物存在≥10个/ 100个另外，主要由Si构成的氧化物与钢板的表面的比例为≤10％，和/或（II），当表面附近的截面为使用SEM（扫描电子显微镜），在可选的10个场中观察2000张放大倍率的钢板，不存在宽度≤3μm，深度≥5μm的裂纹。版权所有（C）2006，JPO＆NCIPI

26. 发明专利

JP2004211152A High-strength iron-base material with high frictional force, and manufacturing method therefor 审中-公开
公开(公告)号：JP2004211152A
公开(公告)日：2004-07-29
申请号：JP2002381839
申请日：2002-12-27
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： YAGUCHI HIROSHI , NOMURA MASAHIRO , NISHI SEIJI
IPC分类号： B22D19/00 , B22D19/14 , B22D23/00 , C22C33/04 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high-strength iron-base material with high frictional force, which shows little decrease of frictional force even after a long period of use, and to provide a method for reliably manufacturing the iron-base material.
SOLUTION: In the iron-base material having compounds containing at least one element selected from among groups 4a and 5a elements dispersed in a matrix made of iron or a ferro-alloy, the high-strength iron-base material with the high frictional force is characterized in that the above compound is at least one compound selected from the group consisting of carbides, borides, nitrides and composite compounds thereof, and occupies 5 to 30 area% by average, and that when L is defined as the envelope circumference length of the above compounds having a maximum diameter of 2 μm or larger in a cross section of the iron-base material, and M as the real circumference length of the above compounds, an abundance ratio of the compounds having the circumference length ratio (L/M) of 0.80 or less is 50% or more by the number of pieces in the whole compounds having the maximum diameter of 2 μm or larger.
COPYRIGHT: (C)2004,JPO&NCIPI

27. 发明专利

JP2012137476A Hydrogen cracking resistivity evaluation method of forged steel material 有权
标题翻译：加氢钢材料的氢裂纹电阻率评估方法
公开(公告)号：JP2012137476A
公开(公告)日：2012-07-19
申请号：JP2011194042
申请日：2011-09-06
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： KINUGASA JUNICHIRO , URUSHIBARA WATARU , NOMURA MASAHIRO
IPC分类号： G01N17/00 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a hydrogen cracking resistivity evaluation method of a forged steel material for evaluating hydrogen cracking considered to be generated due to hydrogen distribution to a steel structure in a temperature dropping process in a forged steel material product, and hydrogen accumulation in an enclosure and the like, simply, rapidly and at high sensitivity.SOLUTION: A hydrogen cracking resistivity evaluation method S of a forged steel material, which is used for forged steel material components such as power transmission components for marine vessels, generators and the like, and reaction vessels, includes: a step of forging a steel ingot for steel material to be forged and forming a sample of the forged steel material (S3); a step of subjecting the sample to heat treatment in a hydrogen concentration range from 30% to 100% of hydrogen concentration and under a temperature atmosphere of 300°C or more and less than 1500°C to introduce hydrogen into the steel (S4); and a step of performing an evaluation test for evaluating the cracking resistivity of the sample into which hydrogen has been introduced (5).
摘要翻译：要解决的问题：提供一种锻造钢材的氢裂解电阻率评价方法，该锻造钢材料用于评价在锻造钢材制品中的降温过程中由于氢分布而被认为产生的氢裂纹到钢结构，外壳中的氢积累等，简单，快速且高灵敏度。解决方案：用于船舶，发电机等的动力传动部件等的锻造钢材成分的锻造钢材的氢裂化电阻率评价方法S以及反应容器包括：锻造工序用于锻造和形成锻造钢材料样品的钢材的钢锭（S3）; 在氢浓度范围为30〜100％的氢浓度的范围内，在300℃以上且小于1500℃的温度气氛下对样品进行热处理以将氢引入钢中的步骤（S4）; 以及进行用于评价已经导入氢气的样品的开裂电阻率的评价试验的步骤（5）。版权所有（C）2012，JPO＆INPIT

28. 发明专利

JP2011102437A High-strength cold-rolled steel sheet having excellent coating film adhesion and workability, and method for producing the same 有权
标题翻译：具有优异涂层膜的高强度冷轧钢板粘合力和可加工性及其制造方法
公开(公告)号：JP2011102437A
公开(公告)日：2011-05-26
申请号：JP2010290850
申请日：2010-12-27
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： OMIYA YOSHINOBU , KAMITSUMA SHINJI , KAMURA MANABU , HASHIMOTO IKUO , NOMURA MASAHIRO
IPC分类号： C22C38/00 , B21B3/00 , C21D1/26 , C21D1/74 , C21D9/46 , C22C38/06 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide a high-strength cold-rolled steel sheet which has excellent coating film adhesion and workability and satisfies the tensile strength of ≥550 MPa.
SOLUTION: The high-strength cold-rolled steel sheet having excellent coating film adhesion and workability is composed of a steel sheet with a composite structure satisfying a prescribed componential composition, and comprising prescribed amounts of ferrite, bainite and retained austenite, and, when the cross-section in the vicinity of the surface of the steel sheet is observed at the magnification power of 2,000 using SEM (scanning electron microscope), cracks with a width of ≤3 μm and a depth of ≥5 μm are not present in optional 10 fields, its tensile strength is ≥550 MPa, and also, the tensile strength (TS: unit MPa) and elongation (El: unit %) satisfy inequality (1) TS×El≥19,000.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有优异的涂膜粘附性和加工性的高强度冷轧钢板，并且满足≥550MPa的拉伸强度。解决方案：具有优异的涂膜粘附性和可加工性的高强度冷轧钢板由具有规定组成组成的复合结构的钢板组成，并且包含规定量的铁素体，贝氏体和残余奥氏体，以及当使用SEM（扫描型电子显微镜）以放大倍数2000观察钢板表面附近的截面时，不存在宽度≤3μm，深度≥5μm的裂纹在可选的10个场中，其拉伸强度≥550MPa，拉伸强度（TS：单位MPa）和伸长率（El：单位％）满足不等式（1）TS×El≥19,000。版权所有（C）2011，JPO＆INPIT

29. 发明专利

JP2009084648A High strength hot rolled steel sheet having excellent fatigue strength and stretch-flange formability 有权
标题翻译：具有优异的疲劳强度和拉伸法兰刚度的高强度热轧钢板
公开(公告)号：JP2009084648A
公开(公告)日：2009-04-23
申请号：JP2007256462
申请日：2007-09-28
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： MURAKAMI TOSHIO , NOMURA MASAHIRO , MUKAI YOICHI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To further improve the fatigue properties in a DP steel having excellent stretch-flange formability.
SOLUTION: Disclosed is a high strength hot rolled steel sheet having a composition comprising, by mass, >0.01 to 0.30% C, 0.1 to 2.0% Si and 0.1 to 2.5% Mn, further comprising 0.01 to 0.15% V and 0.01 to 0.15% Ti so as to satisfy equations (1) and (2), and the balance Fe with inevitable impurities, and having a structure where a ferrite fraction is 50 to 95%, and the fraction of a hard second phase composed of martensite+retained austenite is 5 to 50%, and the average grain size r(nm) of precipitates in the ferrite satisfies equation (3), and the average grain size r and the precipitate fraction f satisfy equation (4); X(M)(M:V,Ti) in the equation (3) denotes the average atomic weight ratios of the respective elements composing the precipitates, and the atomic symbols in the equations (1), (2) and (5) denote the mass% of the elements.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了进一步提高具有优异的拉伸凸缘成形性的DP钢的疲劳特性。解决方案：公开了一种高质量热轧钢板，其组成包括：质量分数为> 0.01至0.30％的C，0.1至2.0％的Si和0.1至2.5％的Mn，还包含0.01至0.15％的V和0.01 至0.15％的Ti，以满足式（1）和（2），余量为Fe与不可避免的杂质，并且具有铁素体分数为50〜95％的结构，由马氏体组成的硬质相的分数 +残留奥氏体为5〜50％，铁素体的析出物的平均粒径r（nm）满足式（3），平均粒径r和析出分数f满足式（4）。式（3）中的X（M）（M：V，Ti）表示构成析出物的各个元素的平均原子量比，式（1），（2）和（5）中的原子符号表示元素的质量％。版权所有（C）2009，JPO＆INPIT

30. 发明专利

JP2009084643A Hot rolled steel sheet having excellent fatigue property and stretch flange formability balance 有权
标题翻译：具有优异的疲劳性能和拉伸法兰可伸缩性的热轧钢板
公开(公告)号：JP2009084643A
公开(公告)日：2009-04-23
申请号：JP2007256154
申请日：2007-09-28
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： MURAKAMI TOSHIO , NOMURA MASAHIRO , MUKAI YOICHI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a hot rolled steel sheet having excellent fatigue properties and an excellent balance in strength-stretch flange formability.
SOLUTION: The hot rolled steel sheet having excellent fatigue properties and stretch flange formability has a composition comprising, by mass, 0.01 to 0.10% C, ≤2.0% Si and 0.5 to 2.5% Mn, and further comprising one or more kinds of elements selected from V, Nb, Ti, Mo, Zr and W by 0.01 to 0.30%, respectively, and also, satisfying equations (1) and (2), and the balance Fe with inevitable impurities; wherein a ferrite fraction is >90%, a ferrite grain size is ≤10 μm, a precipitate average grain size r(nm) satisfies equation (3) (X(V-W) is expressed by equation (5)), and the average grain size r and a precipitation fraction f satisfy equation (4).
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：提供具有优异的疲劳性能和强度拉伸凸缘成形性的优异平衡的热轧钢板。解决方案：具有优异的疲劳性能和拉伸凸缘成形性的热轧钢板具有以质量计含有0.01％至0.10％的C，≤2.0％的Si和0.5至2.5％的Mn的组成，并且还包括一种或多种的选自V，Nb，Ti，Mo，Zr和W的元素分别为0.01〜0.30％，并且满足式（1）和（2），余量为Fe与不可避免的杂质; 其中铁素体部分> 90％，铁素体晶粒尺寸≤10μm，沉淀平均粒径r（nm）满足式（3）（X（VW）由式（5）表示），平均颗粒尺寸r和沉淀分数f满足公式（4）。版权所有（C）2009，JPO＆INPIT

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式