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41. 发明专利

JP2011225935A High strength thin steel sheet having excellent fatigue property and local ductility and method for producing the same 有权
标题翻译：具有优异的疲劳性能和本地密度的高强度薄钢板及其制造方法
公开(公告)号：JP2011225935A
公开(公告)日：2011-11-10
申请号：JP2010097132
申请日：2010-04-20
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OKAMOTO TSUTOMU , YOSHINAGA NAOKI , MAEDA DAISUKE
IPC分类号： C22C38/00 , C21D9/46 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high strength thin steel sheet which has excellent fatigue properties and local ductility using a mixed structure of precipitation strengthened ferrite and martensite, and a method for producing the same.SOLUTION: Nb of 0.01 to 0.10% and Ti of 0.01 to 0.20% are incorporated into a steel, the structure of the steel is made of the one composed of a ferrite phase and a martensite phase, cooling after hot rolling is controlled to regulate the spacing of the precipitated faces of interface boundary precipitation in the region of ≥40% of the ferrite phase to 20 to 60 nm, and the carbonitrides of Ti and Nb are precipitated into the ferrite phase by the interphase boundary precipitation, thus the ferrite is subject to precipitation hardening.
摘要翻译：要解决的问题：提供一种使用沉淀强化铁素体和马氏体的混合结构具有优异的疲劳特性和局部延展性的高强度薄钢板及其制造方法。解决方案：钢中掺入0.01〜0.10％的Nb和0.01〜0.20％的Ti，钢的结构由铁素体相和马氏体相组成，热轧后进行冷却调节铁素体相≥40％区界面界面沉淀析出面的间距为20〜60nm，Ti和Nb的碳氮化物通过界面边界析出沉淀到铁素体相中，因此，铁素体会析出硬化。版权所有（C）2012，JPO＆INPIT

42. 发明专利

JP2010280127A Composite panel excellent in tensile rigidity 审中-公开
标题翻译：复合面板在拉伸刚度优秀
公开(公告)号：JP2010280127A
公开(公告)日：2010-12-16
申请号：JP2009135068
申请日：2009-06-04
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SUGIURA NATSUKO , KOJIMA KOJI , HANYA KOJI , YOSHINAGA NAOKI
IPC分类号： B32B15/01 , B32B15/08 , B60J5/00 , B62D25/06 , C21D9/46 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a composite panel which has two steel sheets stuck together, is excellent in tensile rigidity, can thin the thickness of a panel member for an automobile or the like, and contributes to the weight reduction and improvement of fuel combustion.
SOLUTION: In the composite panel, the two steel sheets are stuck, an X-ray random intensity ratio of {211} orientation at 1/2 sheet thickness part of the steel sheet is 5 or above, the maximum Young's modulus of the steel sheet is in excess of 225 GPa and 245 GPa or below, and the angle formed in the direction wherein the Young' modulus within the steel sheet surface of the two steel sheets becomes is 30-60° at maximum. Furthermore, it is preferable that the plate thickness A (mm) of one side steel sheet and the plate thickness B (mm) of the other steel sheet of two steel sheets stuck together satisfy 0≤|A-B|/(A+B)≤0.6, and 0.5 (mm)≤A+B≤2.0 (mm).
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种具有粘合在一起的两个钢板的复合板，拉伸刚度优异，可以使汽车等的面板构件的厚度变薄，并且有助于减轻和改善的燃料燃烧。
解决方案：在复合板中，两块钢板被卡住，钢板1/2板厚部分的X射线随机强度比为ä211} <011>取向为5以上，最大杨氏钢板的模量超过225GPa和245GPa以下，并且在两钢板的钢板表面中的杨氏模量变为最大的方向上形成的角度为30〜60°。此外，优选一侧钢板的板厚A（mm）和粘贴在一起的两块钢板的另一钢板的板厚B（mm）满足0≤3A-B¾/（A + B）≤ 0.6和0.5（mm）≤A+B≤2.0（mm）。版权所有（C）2011，JPO＆INPIT

43. 发明专利

JP2010024547A Hot rolled steel sheet having excellent hole expansibility and method for producing the same 有权
标题翻译：具有优异孔膨胀性的热轧钢板及其制造方法
公开(公告)号：JP2010024547A
公开(公告)日：2010-02-04
申请号：JP2009124047
申请日：2009-05-22
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MAEDA DAISUKE , TANAHASHI HIROYUKI , YOSHINAGA NAOKI
IPC分类号： C22C38/00 , B21D22/20 , C21D9/46 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high strength hot rolled steel sheet particularly having excellent ductility and hole expansibility without incorporating a large amount of expensive elements and requiring a special production process, and to provide a method for producing the same.
SOLUTION: The hot rolled steel sheet has a composition comprising, by mass, 0.010 to 0.100% Nb and 0.05 to 0.15% Ti, comprising proper amounts of C and Mn, and in which the contents of Si, Al, P, S and N are limited to proper ones, and in which the following Ae
3 is ≤900°C and whose metallic structure is composed of ferrite of ≥95% in volume ratio, and the balance pearlite and bainite: Ae
3 =937-477C+56Si-20Mn-16Cu-15Ni-5Cr+38Mo+125V+136Ti-19Nb+198Al+3315B. Also, the production method is provided, where hot rolling is performed in such a manner that finishing temperature is controlled to 950 to 1,050°C, cooling is performed at a cooling rate of ≥30°C/s, coiling temperature is controlled to the range of 550 to 700°C, and the following Bs or more is satisfied: Bs=830-270C-90(Mn+Mo)-37Ni-70Cr.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供特别是具有优异的延展性和孔扩展性的高强度热轧钢板，而不需要大量昂贵的元件并需要特殊的制造工艺，并提供其制造方法。解决方案：热轧钢板的组成为：含有0.010〜0.100％的Nb和0.05〜0.15％的Ti，其含有适量的C和Mn，其中Si，Al，P， S和N仅限于适当的，其中以下Ae 3 ≤900℃，其金属结构体积比为≥95％的铁素体，平衡珠光体和贝氏体：Ae <3> = 937-477C + 56Si-20Mn-16Cu-15Ni-5Cr + 38Mo + 125V + 136Ti-19Nb + 198Al + 3315B。此外，提供了这样的制造方法，其中以将终轧温度控制在950〜1050℃的方式进行热轧，以30℃/ s以下的冷却速度进行冷却，将卷取温度控制在范围为550〜700℃，满足以下B以上：Bs = 830〜270℃-90（Mn + Mo）-37Ni-70Cr。版权所有（C）2010，JPO＆INPIT

44. 发明专利

JP2009263715A Hot-rolled steel plate superior in hole expandability and manufacturing method therefor 有权
标题翻译：热轧钢板超高压孔的可扩展性及其制造方法
公开(公告)号：JP2009263715A
公开(公告)日：2009-11-12
申请号：JP2008114265
申请日：2008-04-24
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OTSUKA KAZUYA , MAEDA DAISUKE , YOSHINAGA NAOKI , HAYASHI KUNIO , FUJITA NOBUHIRO , TAKAHASHI MANABU
IPC分类号： C22C38/00 , B21B1/26 , B21B3/00 , C21D9/46 , C22C38/12 , C22C38/58 , C23C2/06 , C23C2/28 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot-rolled steel plate which has a small in-plane anisotropy and superior hole expandability, and to provide a manufacturing method therefor.
SOLUTION: The hot-rolled steel plate superior in hole expandability comprises, by mass%, 0.005 to 0.150% C, 2.50% or less Si, 0.10 to 3.00% Mn, 0.150% or less P, 0.0150% or less S, 0.150% or less Al, 0.0100% or less N, 0.005 to 0.07% Nb and the balance Fe with unavoidable impurities; and has a structure in which a main structure is a bainite structure, former austenite grains have grain sizes of 30 μm or smaller, and former austenite crystal grains have aspect ratios of 4 or less.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题：提供一种面内各向异性小，扩孔性优异的高强度热轧钢板，提供其制造方法。解决方案：扩孔性优异的热轧钢板以质量％计含有C：0.005〜0.150％，Si：2.50％以下，Mn：0.10〜3.00％，P：0.150％以下，P：0.0150％以下，0.150％以下的Al，0.0100％以下的N，0.005〜0.07％的Nb，余量的Fe与不可避免的杂质; 并且具有主结构为贝氏体组织的结构，前奥氏体晶粒的晶粒尺寸为30μm以下，前奥氏体晶粒的纵横比为4以下。版权所有（C）2010，JPO＆INPIT

45. 发明专利

JP2009249698A High rigidity steel sheet and method for producing the same 有权
标题翻译：高刚性钢板及其制造方法
公开(公告)号：JP2009249698A
公开(公告)日：2009-10-29
申请号：JP2008100479
申请日：2008-04-08
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： YOSHINAGA NAOKI , SUGIURA NATSUKO , HANYA KOJI , OKA MASAHARU , MIYAZAKI YASUNOBU
IPC分类号： C22C38/00 , C21D9/46 , C22C38/06 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high rigidity steel sheet having an increased Young's modulus in the direction of 35 to 75° to the rolling direction of the steel sheet, and to provide a method for producing the same.
SOLUTION: The high rigidity steel sheet has a composition including, by mass, ≥0.03 to 1.50 to in the 1/4 layer of the sheet thickness is ≥6, and sheet thickness is ≥0.5 mm. Also, a production method is disclosed where, after hot rolling in which a heating temperature is >1,220°C, a finishing temperature is
摘要翻译：要解决的问题：提供一种在与钢板的轧制方向成35至75°的方向上具有增加的杨氏模量的高刚性钢板，并提供其制造方法。解决方案：高刚性钢板的组成包括质量分数为≥0.03至0.20％的Mn，0.0010至0.0500％的S和> 1.50至<5.00％的Al，并且包括适量的C和Mn，其中Si，P，S和N的含量被限制，余量为Fe与不可避免的杂质，其中片材厚度的1/4层中的ä110} <001>的极密度为≥6，以及板厚≥0.5mm。此外，公开了在加热温度> 1220℃的热轧后，终轧温度<850℃，卷取温度<600℃的热轧板退火的制造方法中，最终温度执行≥800℃或终轧温度≥850℃，卷取温度≥550℃，≤890℃下的总通风进行限制为<50％的热轧，在20〜80％的通气冷轧后，进行最高温度≥850℃的最终退火。版权所有（C）2010，JPO＆INPIT

46. 发明专利

JP2009249692A High rigidity steel sheet, and method for producing the same 有权
标题翻译：高刚性钢板及其制造方法
公开(公告)号：JP2009249692A
公开(公告)日：2009-10-29
申请号：JP2008099597
申请日：2008-04-07
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： YOSHINAGA NAOKI , SUGIURA NATSUKO , HANYA KOJI , OKA MASAHARU , MIYAZAKI YASUNOBU
IPC分类号： C22C38/00 , B21B3/00 , C21D8/02 , C21D8/04 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high rigidity steel sheet having an increased Young's modulus in the 35 to 75° direction to the rolling direction of the steel sheet, and to provide a method for producing the same.
SOLUTION: The high rigidity steel sheet has a composition containing, by mass, >1.50% to ≤10.00% Al, further one or more selected from Bi, Pb, Sb and Sn, and suitable amounts of C and Mn, and in which the contents of Si, P, S and N are properly limited, and the balance Fe with inevitable impurities, wherein the pole density of the {110} in the 1/4 layer of the sheet thickness is ≥6, and sheet thickness is ≥0.5 mm. Also, a production method is disclosed where, after hot rolling at a finishing temperature of
摘要翻译：要解决的问题：提供一种在钢板的轧制方向上沿35°至75°方向增加的杨氏模量的高刚性钢板，并提供其制造方法。解决方案：高刚性钢板具有质量含量为> 1.50％至≤10.00％的Al，还有一种或多种选自Bi，Pb，Sb和Sn以及适量的C和Mn，其中Si，P，S和N的含量被适当地限制，余量为Fe与不可避免的杂质，其中片材厚度的1/4层中的ä110} <001>的极密度为≥6，以及板厚≥0.5mm。此外，公开了一种生产方法，其中在最终温度<800℃下热轧后，在≥800℃的最高温度下进行热轧板退火，或者在最终温度为 800〜890℃被限制为<50％，并且在20〜80％的通气冷轧后，进行最高温度≥850℃的最终退火。版权所有（C）2010，JPO＆INPIT

47. 发明专利

JP2007283330A Shape steel 审中-公开
标题翻译：形状钢
公开(公告)号：JP2007283330A
公开(公告)日：2007-11-01
申请号：JP2006112188
申请日：2006-04-14
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： HANYA KOJI , UNO NOBUYOSHI , SUGIURA NATSUKO , YOSHINAGA NAOKI
IPC分类号： B21C37/00 , C22C38/00 , C22C38/14 , E04C3/06
摘要： PROBLEM TO BE SOLVED: To provide a shape steel in which flexural rigidity EI around a strong axis is improved while suppressing its weight and production cost.
SOLUTION: In the shape steel comprising upper and lower flanges and a web, at least the upper and lower flanges are composed of high Young's modulus steel sheets whose Young's modulus in the rolling direction is >215 to 290 GPa, and the high Young's modulus steel sheets are fixed to the web in such a manner that the rolling direction thereof comes to the longitudinal direction of the upper and lower flanges. At this time, the Young's modulus in the longitudinal direction of the member may be controlled to >215 to 290 GPa.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种在强力轴上具有抗弯刚度EI的同时抑制其重量和生产成本的形状钢。解决方案：在包括上下凸缘和腹板的形状钢中，至少上凸缘和下凸缘由高杨氏模量钢板组成，其横向杨氏模量> 215-290GPa，高杨氏模量钢板以其轧制方向到达上下凸缘的纵向的方式固定到幅材上。此时，可以将构件的纵向的杨氏模量控制在> 215〜290GPa。版权所有（C）2008，JPO＆INPIT

48. 发明专利

JP2007254766A Steel sheet for deep drawing excellent in low-temperature baking hardenability and room-temperature non-aging property and method for producing the same 有权
标题翻译：用于低温烘烤难处理和室温非老化性能的深层钢板及其制造方法
公开(公告)号：JP2007254766A
公开(公告)日：2007-10-04
申请号：JP2006077028
申请日：2006-03-20
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MARUYAMA NAOKI , YOSHINAGA NAOKI , TAKAHASHI MANABU
IPC分类号： C22C38/00 , C21D9/48 , C22C38/28 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet for deep drawing excellent in low-temperature baking hardenability and room-temperature non-aging properties, which has natural non-aging properties, ensures high baking hardenability even by low-temperature coating/baking, and further has good deep drawability, and to provide a method for producing the same.
SOLUTION: This steel sheet for deep drawing has a composition comprising, by mass, ≤0.004% C, ≤0.6% Si, 0.15-1.2% Mn, ≤0.05% P, 0.003-0.03% S, ≤0.015% Al, 0.002-0.6% Cu, 0.3-2.0% Cr, ≤0.01% Nb, ≤0.01% Ti, 0.002-0.008% N, and the balance Fe with inevitable impurities, wherein a soluble N content and a soluble C content are regulated to 0.001-0.004% and ≤0.0015%, respectively, and a total area of the interfaces between sulfides and Fe per unit volume is ≥2×10
-3 μm
2 /μm
3 .
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有天然非时效特性的低温烘烤淬透性和室温非时效性优异的深拉伸钢板，即使通过低温涂覆也能确保高的烘烤淬透性 /烘烤，并且还具有良好的深冲性，并提供其制造方法。该解决方案：该深拉深钢板具有质量≤0.004％C，≤0.6％Si，0.15-1.2％Mn，≤0.05％P，0.003-0.03％S，≤0.015％Al ，0.002-0.6％Cu，0.3-2.0％Cr，≤0.01％Nb，≤0.01％Ti，0.002-0.008％N，余量为Fe与不可避免的杂质，其中可溶性N含量和可溶性C含量被调节至 0.001-0.004％和≤0.0015％，硫化物与单位体积Fe之间的界面总面积为≥2×10 -3 μm 2 3 。版权所有（C）2008，JPO＆INPIT

49. 发明专利

JP2007231369A High-strength cold rolled steel, high-strength hot dip galvanized steel sheet and high-strength galvannealed steel sheet having excellent formability and weldability, method for producing high-strength cold rolled steel sheet, method for producing high-strength hot dip galvanized steel sheet and method for producing high-strength galvannealed steel sheet 有权
标题翻译：高强度冷轧钢，高强度热镀锌钢板和具有优异的可轧性和焊接性的高强度钢铁钢板，生产高强度冷轧钢板的方法，生产高强度热镀锌钢板的方法以及生产高强度钢筋钢板的方法
公开(公告)号：JP2007231369A
公开(公告)日：2007-09-13
申请号：JP2006054717
申请日：2006-03-01
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： AZUMA MASASHI , YOSHINAGA NAOKI , HIWATARI SHUNJI , YONEMURA SHIGERU , SAKUMA KOJI
IPC分类号： C22C38/00 , B21B1/22 , B21B1/26 , B21B3/00 , C21D9/46 , C22C38/14 , C22C38/38 , C23C2/06 , C23G1/08
摘要： PROBLEM TO BE SOLVED: To provide a high-strength cold rolled steel sheet having the maximum tensile strength (TS) of ≥980 MPa, and having excellent ductility, hole expansibility, bendability and spot weldability.
SOLUTION: The high-strength cold rolled steel sheet has a composition comprising, by mass, 0.075 to
摘要翻译：要解决的问题：提供具有最大拉伸强度（TS）≥980MPa的高强度冷轧钢板，并且具有优异的延展性，孔扩展性，弯曲性和点焊性。解决方案：高强度冷轧钢板具有质量分数为0.075〜0.1％的Si，Si：0.4〜0.8％，Mn：1.9〜2.3％，Mo：0.1〜0.35％，Mo：0.014〜0.029％ Ti，0.0001〜0.0045％B，≤0.04％P，≤0.01％S，≤0.1％Al，≤0.01％N，0.001〜0.0045％O，余量为Fe与不可避免的杂质。版权所有（C）2007，JPO＆INPIT

50. 发明专利

JP2007031840A Hot-rolled steel sheet excellent in paint-baking hardenability and resistance to natural aging and its production method 有权
标题翻译：热轧钢板优良的耐腐蚀性和耐天然老化及其生产方法
公开(公告)号：JP2007031840A
公开(公告)日：2007-02-08
申请号：JP2006239441
申请日：2006-09-04
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： YOSHINAGA NAOKI , TAKAHASHI MANABU , SUGIURA NATSUKO , MIYASAKA AKIHIRO , SUGIYAMA MASAAKI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/12 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide hot-rolled steel sheet which has a good paint-baking hardenability and resistance to natural aging. SOLUTION: The hot-rolled steel sheet comprises, by mass, 0.0001-0.20% C, ≤2.0% Si, ≤3.0% Mn, ≤0.15% P, ≤0.015% S, ≤0.20% Al, 0.001-0.10% N, at least one element chosen from Cr, Mo and V, and the balance being Fe and unavoidable impurities, wherein the relations: 0.52Al/N COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有良好的油漆烘烤淬透性和耐自然老化性的热轧钢板。解决方案：热轧钢板按质量计包含：0.0001-0.20％C，≤2.0％Si，≤3.0％Mn，≤0.15％P，≤0.015％S，≤0.20％Al，0.001-0.10 ％N，选自Cr，Mo和V中的至少一种元素，余量为Fe和不可避免的杂质，其中关系：0.52Al / N <10，Cr≤2.5％，Mo≤1.0％，V≤0.1％和（Cr + 3.5Mo + 39V）≥0.1。钢板在BH170下具有≥45MPa的强度，在施加2％的拉伸变形，然后在170℃下进行20分钟的热处理，并且在BH160两者下的强度为≥35MPa的强度下评价施加2％的拉伸变形，然后在160℃下进行10分钟的热处理，然后在施加2％拉伸变形，然后在150℃下热处理10分钟后评价BH150，并且屈服点在100℃下进行热处理1小时后进行拉伸试验时的伸长率≤0.6％。版权所有（C）2007，JPO＆INPIT

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