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1. 发明专利

JP2012122093A High strength cold-rolled steel sheet excellent in formability and method for producing the same 有权
标题翻译：优异的高强度冷轧钢板及其制造方法
公开(公告)号：JP2012122093A
公开(公告)日：2012-06-28
申请号：JP2010273297
申请日：2010-12-08
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： WAKABAYASHI CHIE , OKAMOTO TSUTOMU , FUJITA NOBUHIRO , TAKAHASHI MANABU , KAWADA HIROYUKI , MURASATO AKINOBU
IPC分类号： C22C38/00 , C21D9/46 , C22C38/60 , C23C2/06
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a steel sheet excellent in 0.2% proof stress, strength and ductility by optimizing the composition and the production condition of a TRIP (Transformation-Induced Plasticity) steel and controlling the structure of the steel sheet.SOLUTION: The steel sheet excellent in the formability contains 0.10-0.5% C, 1.0-4.0% Mn, 0.8-4.0% Si, 0.01-0.4% Ti, ≤0.015% P, ≤0.05% S, ≤0.005% N and the balance Fe with inevitable impurities, and contains as the steel sheet micro-structure, by an area ratio, 10-60% tempered-martensite, 5-50% ferrite, 5-30% bainite, 5-30% retained austenite and further, 0-20% total of perlite and martensite.
摘要翻译：待解决的问题：提供一种通过优化TRIP（转化诱导的可塑性）钢的组成和生产条件并控制其结构的方法来制造0.2％的极限应力，强度和延展性优异的钢板的方法钢板。
解决方案：成型性优异的钢板包含0.10-0.5％C，1.0-4.0％Mn，0.8-4.0％Si，0.01-0.4％Ti，≤0.015％P，≤0.05％S，≤0.005％ N，余量为不可避免的杂质，含有10〜60％回火马氏体，5-50％铁素体，5-30％贝氏体，5-30％残余奥氏体的面积比另外，珍珠岩和马氏体的总和为0〜20％。版权所有（C）2012，JPO＆INPIT

2. 发明专利

JP2012041613A Steel sheet for hot press having excellent delayed fracture resistance and collision safety, and method for producing the same 有权
$Steel sheet for hot press having excellent delayed fracture resistance and collision safety, and method for producing the same$
标题翻译：具有优异的延迟抗断裂和碰撞安全性的热压机用钢板及其制造方法
公开(公告)号：JP2012041613A
公开(公告)日：2012-03-01
申请号：JP2010185155
申请日：2010-08-20
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SANO KOICHI , SEKIDO YOSHITO , OKAMOTO TSUTOMU , KAWASAKI KAORU , FUJITA NOBUHIRO
IPC分类号： C22C38/00 , B21D22/20 , C21D1/18 , C21D9/46 , C22C38/06 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet for hot press which can obtain a strength of ≥1,000 MPa after high temperature forming, and also has excellent delayed fracture resistance and collision safety, and a method for producing the same.SOLUTION: The steel sheet for hot press has a composition which comprises 0.1 to 0.5% C, 0.05 to 2% Si, 0.1 to 3% Mn and 0.003 to 2% Al, and in which the content of P is limited to ≤0.05%, the content of S is limited to ≤0.03% and the content of N is limited to ≤0.01%, and which satisfies formula (1) Si+Al≥1.0% and formula (2): 50≥Vc≥25; wherein Vc=10^(3.69-0.75β) [°C/s]; and β=2.7C+0.4Si+Mn.
摘要翻译：待解决的问题：提供一种能够在高温成形后获得≥1000MPa的强度的热压机用钢板，并且还具有优异的延迟断裂性和碰撞安全性及其制造方法。＆lt; P＆gt;解决方案：热压用钢板的组成为：含有0.1〜0.5％的C，0.05〜2％的Si，0.1〜3％的Mn和0.003〜2％的Al，其中P的含量限于 ≤0.05％，S含量限制在≤0.03％，N含量限制在≤0.01％，满足式（1）Si +Al≥1.0％和式（2）：50≥Vc 90 ≥25; 其中Vc 90 = 10 ^（3.69-0.75β）[℃/ s]; β= 2.7C + 0.4Si + Mn。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2012031469A High-strength cold rolled steel sheet excellent in deep drawability, method of manufacturing the same 有权
标题翻译：高强度冷轧钢板，优点在于其可靠性，制造方法
公开(公告)号：JP2012031469A
公开(公告)日：2012-02-16
申请号：JP2010171871
申请日：2010-07-30
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： YAMAGUCHI YUJI , OKAMOTO TSUTOMU , SUGIURA NATSUKO , FUJITA NOBUHIRO
IPC分类号： C22C38/00 , C21D9/48 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high-strength cold rolled steel sheet excellent in deep drawability, and to provide a method of manufacturing the same.SOLUTION: The high-strength cold rolled steel sheet excellent in deep drawability is characterized in that: it contains, by mass%, 0.03-0.25% C, 0.001-3.0% Si, 0.5-3.0% Mn, 0.001-0.15% P, 0.0005-0.05% S, 0.01-1.0% Al, 0.1-3.0% Cr, 0.0005-0.01% N, and the balance Fe with inevitable impurities; a mother phase is a ferrite phase; other metallographic structure contains one or two or more kinds out of bainite, austenite, martensite, pearlite in volume fraction of 2% or more; X-ray random intensity ratios of sheet faces {111} and {100} at a thickness of 1/2 in the steel sheet are respectively 5.0 or higher, and 3.0 or lower; and an average r value is 1.3 or higher.
摘要翻译：要解决的问题：提供一种具有优异的深冲性的高强度冷轧钢板，并提供其制造方法。解决方案：深冲性优异的高强度冷轧钢板的特征在于，以质量％计含有0.03-0.25％的C，0.001-3.0％的Si，0.5-3.0％的Mn，0.001-0.15 ％P，0.0005-0.05％S，0.01-1.0％Al，0.1-3.0％Cr，0.0005-0.01％N，余量为Fe和不可避免的杂质; 母相是铁素体相; 其他金相组织中含有一种或两种以上的贝氏体，奥氏体，马氏体，珠光体的体积分数为2％以上; 钢板的厚度为1/2的板面ä111}和ä100}的X射线随机强度比分别为5.0以上，3.0以下，平均r值为1.3以上。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2011088484A Skeleton member for vehicle, and method for manufacturing the same 审中-公开
标题翻译：用于车辆的SKELETON会员及其制造方法
公开(公告)号：JP2011088484A
公开(公告)日：2011-05-06
申请号：JP2009241585
申请日：2009-10-20
申请人： Nippon Steel Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 新日本製鐵株式会社
发明人： SEKISHIRO MASATO , FURUSAKO SEIJI , FUJITA NOBUHIRO
IPC分类号： B62D25/04 , C22C38/00 , C22C38/32
摘要： PROBLEM TO BE SOLVED: To provide a skeleton member for a vehicle capable of attaining light weight and simplification of a structure while ensuring strength and rigidity and of suppressing reduction of strength due to fatigue.
SOLUTION: A center pillar outer 10 includes a body panel 20 constituted by a quenched and press-molded steel plate; and a thickness increase part 22 constituted by a steel plate for thickness increase superposed on a part of the body panel 20 through a brazing filler material coated on a surface of the part of the body panel 20 in a plate thickness direction and surface-joined to the part of the body panel 20 by the brazing filler material.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够实现重量轻且简化结构的车辆的骨架构件，同时确保强度和刚度以及抑制疲劳强度的降低。解决方案：中心柱外部10包括由淬火和压制成型的钢板构成的主体面板20; 以及厚度增加部22，其由通过涂覆在主体面板20的一部分的表面上的厚度方向的板状厚度方向上叠加在一体的主体面板20的一部分上的厚度增加的钢板构成，并且表面接合到身体面板20的部分由钎料填充材料。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2007070660A High strength thin steel sheet having excellent formability, and method for producing the same 有权
标题翻译：具有良好可塑性的高强度钢板及其制造方法
公开(公告)号：JP2007070660A
公开(公告)日：2007-03-22
申请号：JP2005256602
申请日：2005-09-05
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： FUJITA NOBUHIRO , OKAMOTO TSUTOMU , MIZOGUCHI TOSHIAKI , TANIGUCHI YUICHI , UEJIMA YOSHIYUKI , GOTO KOICHI , FUKUDA SHUJI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a TRIP type high strength thin steel sheet having a structure more uniform than that of the conventional one, and having excellent formability, and to provide a method for producing the same. SOLUTION: The high strength thin steel sheet having excellent formability has a steel composition comprising, by mass, 0.05 to 0.25% C, ≤2.0% Si, 0.8 to 3% Mn, 0.0010 to 0.1% P, 0.0010 to 0.05% S, 0.0010 to 0.010% N and 0.01 to 2.0% Al, and the balance iron with inevitable impurities, and in which Mn micro-segregation in the range of 1/8t to 3/8t of the sheet thickness t lies in the range satisfying formula (1), and its structure comprises retained austenite having a mean carbon content of ≥0.9% by ≥3%: 0.10≥σ/Mn (1); wherein, Mn denotes its additional amount, and σ denotes the standard deviation in Mn micro-segregation measurement. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有比常规结构更均匀的结构的TRIP型高强度薄钢板，并且具有优异的成形性，并提供其制造方法。解决方案：具有优异成型性的高强度薄钢板具有质量分数为0.05〜0.25％的Si，≤2.0％的Si，0.8〜3％的Mn，0.0010〜0.1％的P，0.0010〜0.05％的钢， S为0.0010〜0.010％，Al为0.01〜2.0％，剩余铁为不可避免的杂质，其中，在板厚t的1 / 8t〜3 / 8t的范围内的Mn微分散在满足式（1），其结构包括平均碳含量≥0.9％≥3％的残余奥氏体：0.10≥σ/ Mn（1）; 其中，Mn表示其附加量，σ表示Mn微分离测定中的标准偏差。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2006124798A High strength cold rolled thin steel sheet having excellent hole expansibility and its production method 有权
标题翻译：高强度冷轧薄钢板具有优异的孔膨胀性及其生产方法
公开(公告)号：JP2006124798A
公开(公告)日：2006-05-18
申请号：JP2004316553
申请日：2004-10-29
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKEBAYASHI SHIGETO , YOSHINAGA NAOKI , AZUMA MASASHI , FUJITA NOBUHIRO , TAKAHASHI MANABU
IPC分类号： C22C38/00 , C21D9/46 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet having a tensile strength of ≥900 MPa and having an excellent hole expansibility, and to provide its production method.
SOLUTION: The high strength cold rolled thin steel sheet having an excellent hole expansibility has a composition comprising, by mass, 0.05 to 0.22% C, 0.001 to 0.8% Si, 2.0 to 3.3% Mn, 0.001 to 0.1% P, 0.0001 to 0.01% S, 0.001 to 0.2% Al, 0.0001 to 0.01% B and 0.005 to 0.3% Ti, and the balance Fe with inevitable impurities, has a tensile strength of ≥1,100 MPa, and also has a hole expansion ratio of ≥40%.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供拉伸强度≥900MPa并具有优异的孔膨胀性的钢板，并提供其制造方法。解决方案：具有优异的孔扩展性的高强度冷轧薄钢板具有质量为0.05〜0.22％C，0.001〜0.8％Si，2.0〜3.3％Mn，0.001〜0.1％P， 0.0001〜0.01％的S，0.001〜0.2％的Al，0.0001〜0.01％的B和0.005〜0.3％的Ti，余量为Fe的不可避免的杂质，其拉伸强度≥1,100MPa， 40％。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2006068797A Hot pressing method for high strength steel sheet having excellent resistance to hydrogen embrittlement 审中-公开
标题翻译：具有优异抗电加热强度的高强度钢板的热压方法
公开(公告)号：JP2006068797A
公开(公告)日：2006-03-16
申请号：JP2004257862
申请日：2004-09-06
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： HAYASHI KUNIO , SUEKI YUJI , KANDA TOSHIYUKI , OGAMI MASAHIRO , FUJITA NOBUHIRO
IPC分类号： B21D22/20 , B21D24/00 , C21D1/74 , C21D9/46
摘要： PROBLEM TO BE SOLVED: To provide a hot pressing method by which resistance to hydrogen embrittlement is improved in formed parts for which the hot pressing process of a steel sheet having the tensile strength of ≥980 MPa is used. SOLUTION: A dew point inside a heating furnace just before pressing in the hot pressing process is set to -100 to 30°C, the component of the atmosphere inside an annealing furnace is essentially composed of nitrogen or argon, the concentration of hydrogen is set to ≤5 mol%, and the steel sheet is heated to 650-1,000°C, and then press forming is performed. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种在使用拉伸强度≥980MPa的钢板的热压工艺的成形部件中提高耐氢脆性的热压方法。解决方案：在热压过程中刚刚挤压之前，加热炉内的露点设定为-100〜30℃，退火炉内的气氛成分基本上由氮或氩组成，浓度将氢设定为≤5mol％，将钢板加热至650〜1000℃，进行冲压成形。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2005298964A High strength and high ductility thin steel sheet having excellent hole expansibility and its production method 有权
标题翻译：具有优异孔扩展性的高强度和高密度薄钢板及其生产方法
公开(公告)号：JP2005298964A
公开(公告)日：2005-10-27
申请号：JP2005006422
申请日：2005-01-13
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： FUJITA NOBUHIRO , TAKAHASHI MANABU , HAYASHI KUNIO , SENUMA TAKEHIDE , TANIGUCHI YUICHI , NONAKA TOSHIKI
IPC分类号： B21B1/26 , B21B3/00 , C21D9/46 , C22C38/00 , C22C38/12 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high strength thin steel sheet in which the hole expansibility and ductility of a high strength thin steel sheet having a tensile strength of ≥850 MPa are both improved, and to provide its production method.
SOLUTION: The high strength and high ductility thin steel sheet having excellent hole expansibility comprises, by mass, 0.001 to 0.3% C, 0.001 to 0.6% Si, 0.01 to 3% Mn, 0.001 to 4.0% Al, 0.001 to 1.0% Mo, 0.0001 to 0.3% P, 0.0001 to 0.1% S, 0.0001 to 0.0050% B and 0.0001 to 0.0070% N, and in which the space factor of the microstructure in the steel is composed of, by volume fraction, ≥20% ferrite phase, ≥10% bainite phase, ≥5% martensite phase, and ≤5% retained austenite phase, and has a tensile strength of ≥850 MPa. The production method uses the same.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：待解决的问题：提供一种其强度高于≥850MPa的高强度薄钢板的孔扩展性和延展性均得到改善的高强度薄钢板，并提供其制造方法。解决方案：具有优异的孔扩展性的高强度高延展性薄钢板以质量计包含0.001至0.3％的C，0.001至0.6％的Si，0.01至3％的Mn，0.001至4.0％的Al，0.001至1.0 ％Mo，0.0001〜0.3％P，0.0001〜0.1％S，0.0001〜0.0050％B，0.0001〜0.0070％N，其中钢的微细结构的空间因子由体积分数≥20％铁素体相，≥10％的贝氏体相，≥5％的马氏体相和≤5％的残余奥氏体相，其拉伸强度≥850MPa。生产方法使用相同。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2005015909A High-strength low-specific-gravity steel sheet and method for manufacturing the same 有权
标题翻译：高强度低特异性钢板及其制造方法
公开(公告)号：JP2005015909A
公开(公告)日：2005-01-20
申请号：JP2003355229
申请日：2003-10-15
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： FUJITA NOBUHIRO , OKA MASAHARU , TAKAHASHI MANABU , SENUMA TAKEHIDE , TANIGUCHI YUICHI
IPC分类号： C21D9/46 , C22C38/00 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high-strength low-specific-gravity steel sheet and a method for manufacturing the same.
SOLUTION: The high-strength low-specific-gravity steel sheet contains, by mass %, over 0.01 to 5% C, ≤3.0% Si, 0.01 to 30.0% Mn, ≤0.1% P, ≤0.01% S, 3.0 to 10.0% Al, and 0.001 to 0.05% N and the balance Fe and inevitable impurities, has a specific gravity of
摘要翻译：要解决的问题：提供一种高强度低比重钢板及其制造方法。解决方案：高强度低比重钢板以质量％计含有超过0.01％至5％的C，≤3.0％的Si，0.01％至30.0％的Mn，≤0.1％的P，≤0.01％的S， 3.0〜10.0％的Al，0.001〜0.05％的N，余量为Fe和不可避免的杂质，其拉伸强度乘积TS×El的比重为（7.20）≥10000MPax％和断裂伸长率：El（％）。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2004359974A High strength steel sheet having excellent delayed fracture resistance, and its production method 有权
$High strength steel sheet having excellent delayed fracture resistance, and its production method$
公开(公告)号：JP2004359974A
公开(公告)日：2004-12-24
申请号：JP2003156473
申请日：2003-06-02
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OKA MASAHARU , FUJITA NOBUHIRO , TAKAHASHI MANABU , HAYASHI KUNIO , NONAKA TOSHIKI
IPC分类号： B21B1/26 , B21B3/00 , C21D9/46 , C22C38/00 , C22C38/12 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high strength steel sheet which has a tensile strength of ≥1,180 MPa and excellent delayed fracture resistance, and to provide its production method. SOLUTION: The high strength steel sheet having excellent delayed fracture resistance contains, by mass, 0.05 to 0.3% C, COPYRIGHT: (C)2005,JPO&NCIPI

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