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1. 发明授权

US08192683B2 High-strength steel sheets excellent in hole-expandability and ductility 有权
公开(公告)号：US08192683B2
公开(公告)日：2012-06-05
申请号：US10576227
申请日：2003-12-26
申请人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
发明人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
IPC分类号： C22C38/06
CPC分类号： C22C38/002 , B21B3/02 , C21D2211/002 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14
摘要： High-strength steel sheet excellent in hole-expandability and ductility, characterized by; comprising, in mass %, C: not less than 0.01% and not more than 0.20%, Si: not more than 1.5%, Al: not more than 1.5%, Mn: not less than 0.5% and not more than 3.5%, P: not more than 0.2%, S: not less than 0.0005% and not more than 0.009%, N: not more than 0.009%, Mg: not less than 0.0006% and not more than 0.01%, O: not more than 0.005% and Ti: not less than 0.01% and not more than 0.20% and/or Nb: not less than 0.01% and not more than 0.10%, with the balance consisting iron and unavoidable impurities, having Mn %, Mg %, S % and O % satisfying equations (1) to (3), and having the structure primarily comprising one or more of ferrite, bainite and martensite. [Mg %]≧([O %]/16×0.8)×24 (1) [S %]≦([Mg %]/24−[O %]/16×0.8+0.00012)×32 (2) [S %]≦0.0075/[Mn %] (3)

2. 发明授权

US07780797B2 High strength thin steel excellent in hole expansibility, ductility and chemical treatment characteristics 有权
标题翻译：高强度薄钢具有优异的孔膨胀性，延展性和化学处理特性
公开(公告)号：US07780797B2
公开(公告)日：2010-08-24
申请号：US10540418
申请日：2003-12-24
申请人： Riki Okamoto , Hirokazu Taniguchi
发明人： Riki Okamoto , Hirokazu Taniguchi
IPC分类号： C22C38/04 , C22C38/06 , C22C38/14
CPC分类号： C22C38/14 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12
摘要： High strength hot rolled steel sheet having at least a 590 N/mm2 tensile strength and excellent in elongation and ability of phosphate coating, that is, high strength hot rolled steel sheet excellent in burring, elongation, and ability of phosphate coating having a tensile strength of 590 N/mm2 or more comprising a steel composition containing, by mass %, C: 0.02 to 0.08%, Si: 0.50% or less, Mn: 0.50 to 3.50%, P: 0.03% or less, S: 0.01% or less, Al: 0.15 to 2.0%, and the balance of iron and unavoidable impurities, satisfying Mn+0.5×Al
摘要翻译：抗拉强度至少为590N / mm2，伸长率和磷酸盐涂布能力优异的高强度热轧钢板，具有抗拉强度的磷酸酯涂层的毛刺，伸长率和能力优异的高强度热轧钢板为590N / mm 2以上，含有质量％C：0.02〜0.08％，Si：0.50％以下，Mn：0.50〜3.50％，P：0.03％以下，S：0.01％以下的钢组合物， Al：0.15〜2.0％，余量为铁和不可避免的杂质，满足Mn + 0.5×Al <4，具有晶粒尺寸为2μm以上的铁素体的比例为40的钢板的组织％或者更多。

3. 发明授权

US07938917B2 Method for controlling cooling of steel sheet 有权
标题翻译：钢板冷却控制方法
公开(公告)号：US07938917B2
公开(公告)日：2011-05-10
申请号：US11795115
申请日：2005-12-08
申请人： Riki Okamoto , Noriyuki Hishinuma , Hidenori Miyata , Hirokazu Taniguchi
发明人： Riki Okamoto , Noriyuki Hishinuma , Hidenori Miyata , Hirokazu Taniguchi
IPC分类号： C21D8/00 , G01K11/00
CPC分类号： C21D8/02 , C21D9/573 , C21D11/005
摘要： A method for controlling the cooling of a steel sheet characterized by controlling the end-of-cooling temperature in a cooling process from the Ae3 or above temperature of the steel sheet, during which; preliminarily obtaining enthalpies (Hγ and Hα) of an austenite phase and ferrite phase respectively at some temperature, obtaining a gynamic enthalpy (Hsys) defined by formula (1) with an untransformed fraction (Xγ) of austenite in accordance with a target temperature pattern, predicting the temperature by using a gradient of this dynamic enthalpy with respect to temperature as a dynamic specific heat and controlling the cooling of the steel sheet: Hsys=Hγ(Xγ)+Hα(1−Xγ). formula (1)
摘要翻译：一种用于控制钢板冷却的方法，其特征在于，从钢板的Ae3或更高温度控制冷却过程中的冷却终止温度，在此期间，在某些温度下分别预先获得奥氏体相和铁素体相的焓（Hγ和Hα），根据目标温度模式，用奥氏体的未转化部分（Xγ）获得由式（1）定义的动力学焓（Hsys）通过使用该动态焓相对于温度的梯度作为动态比热来预测温度，并控制钢板的冷却：Hsys =Hγ（Xγ）+Hα（1-Xγ）。公式1）

4. 发明授权

US07828912B2 High-strength hot-rolled steel shaft excellent in hole expandability and ductility and production method thereof 有权
标题翻译：孔膨胀性和延展性优异的高强度热轧钢轴及其制造方法
公开(公告)号：US07828912B2
公开(公告)日：2010-11-09
申请号：US10550252
申请日：2003-12-26
申请人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
发明人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
IPC分类号： C22C38/12 , C22C38/14 , C22C38/02 , C21D8/02
CPC分类号： C21D8/0405 , C21D8/0205 , C21D8/0226 , Y10T29/49991
摘要： This invention provides a high-strength hot-rolled steel sheet having strength of at least 980 N/mm2 at a sheet thickness of from about 1.0 to about 6.0 mm and excellent in hole expandability, ductility and ability of phosphate coating, which steel sheet is directed to automotive suspension components that are subjected to pressing. The high-strength hot-rolled steel sheet contains, in terms of a mass %, C: 0.01 to 0.09%, Si: 0.05 to 1.5%, Mn: 0.5 to 3.2%, Al: 0.003 to 1.5%, P: 0.03% or below, S: 0.005% or below, Ti: 0.10 to 0.25%, Nb: 0.01 to 0.05% and the balance consisting of iron and unavoidable impurities; satisfies all of the following formulas to : 0.9≦48/12×C/Ti 50,227×C−4,479×Mn>−9,860 811×C+135×Mn+602×Ti+794×Nb>465 , and has strength of at least 980 N/mm2.
摘要翻译：本发明提供一种板厚为约1.0〜6.0mm的强度为980N / mm2以上的高强度热轧钢板，该钢板的孔膨胀性，延展性和磷酸盐镀层的能力优异针对经受压制的汽车悬架部件。高强度热轧钢板以质量％计含有C：0.01〜0.09％，Si：0.05〜1.5％，Mn：0.5〜3.2％，Al：0.003〜1.5％，P：0.03％以下，S：0.005％以下，Ti：0.10〜0.25％，Nb：0.01〜0.05％，余量由铁和不可避免的杂质构成; 满足以下所有式1至3：0.9＆nlE; 48/12×C / Ti <1.7 <1> 50,227×C-4,479×Mn> -9,860 2 811×C + 135×Mn + 602×Ti + 794×Nb> 465 <3>，强度为980N / mm2以上。

5. 发明申请

US20100111749A1 High-strength steel sheets excellent in hole-expandability and ductility 有权
标题翻译：具有优异的孔扩展性和延展性的高强度钢板
公开(公告)号：US20100111749A1
公开(公告)日：2010-05-06
申请号：US12584903
申请日：2009-09-14
申请人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
发明人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
IPC分类号： C22C38/04 , C22C38/60 , C22C38/06 , C22C38/14
CPC分类号： C22C38/002 , B21B3/02 , C21D2211/002 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14
摘要： High-strength steel sheet excellent in hole-expandability and ductility, characterized by; comprising, in mass %, C: not less than 0.01% and not more than 0.20%, Si: not more than 1.5%, Al: not more than 1.5%, Mn: not less than 0.5% and not more than 3.5%, P: not more than 0.2%, S: not less than 0.0005% and not more than 0.009%, N: not more than 0.009%, Mg: not less than 0.0006% and not more than 0.01%, O: not more than 0.005% and Ti: not less than 0.01% and not more than 0.20% and/or Nb: not less than 0.01% and not more than 0.10%, with the balance consisting iron and unavoidable impurities, having Mn %, Mg %, S % and O % satisfying equations (1) to (3), and having the structure primarily comprising one or more of ferrite, bainite and martensite. [Mg %]≧([O %]/16×0.8)×24 (1) [S %]≦([Mg %]/24−[O %]/16×0.8+0.00012)×32 (2) [S %]≦0.0075/[Mn %] (3)
摘要翻译：孔膨胀性和延展性优异的高强度钢板，其特征在于：以质量％计含有：不小于0.01％且不大于0.20％的Si：不大于1.5％，Al：不大于1.5％，Mn：不小于0.5％且不大于3.5％ P：0.2％以下，S：0.0005％以上0.009％以下，N：0.009％以下，Mg：0.0006％以上0.01％以下O：0.005以下％和Ti：不小于0.01％且不大于0.20％和/或Nb：不小于0.01％且不大于0.10％，余量由铁和不可避免的杂质组成，具有Mn％，Mg％，S％和O％满足方程（1）至（3），并且其结构主要包含铁素体，贝氏体和马氏体中的一种或多种。 [Mg％]≥（[O％] / 16×0.8）×24（1）[S％]＆nlE;（[Mg％] / 24- [O％] / 16×0.8±0.00012）×32（2） [S％]＆nlE; 0.0075 / [Mn％]（3）

6. 发明授权

US08182740B2 High-strength steel sheets excellent in hole-expandability and ductility 有权
标题翻译：具有优异的孔扩展性和延展性的高强度钢板
公开(公告)号：US08182740B2
公开(公告)日：2012-05-22
申请号：US12584903
申请日：2009-09-14
申请人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
发明人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
IPC分类号： C22C38/04 , C22C38/60 , C22C38/06 , C22C38/14
CPC分类号： C22C38/002 , B21B3/02 , C21D2211/002 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14
摘要： High-strength steel sheet excellent in hole-expandability and ductility, characterized by; comprising, in mass %, C: not less than 0.01% and not more than 0.20%, Si: not more than 1.5%, Al: not more than 1.5%, Mn: not less than 0.5% and not more than 3.5%, P: not more than 0.2%, S: not less than 0.0005% and not more than 0.009%, N: not more than 0.009%, Mg: not less than 0.0006% and not more than 0.01%, O: not more than 0.005% and Ti: not less than 0.01% and not more than 0.20% and/or Nb: not less than 0.01% and not more than 0.10%, with the balance consisting iron and unavoidable impurities, having Mn %, Mg %, S % and O % satisfying equations (1) to (3), and having the structure primarily comprising one or more of ferrite, bainite and martensite. [Mg %]≧([O %]/16×0.8)×24 (1) [S %]≦([Mg %]/24−[O %]/16×0.8+0.00012)×32 (2) [S %]≦0.0075/[Mn %] (3)
摘要翻译：孔膨胀性和延展性优异的高强度钢板，其特征在于：以质量％计含有：不小于0.01％且不大于0.20％的Si：不大于1.5％，Al：不大于1.5％，Mn：不小于0.5％且不大于3.5％ P：0.2％以下，S：0.0005％以上0.009％以下，N：0.009％以下，Mg：0.0006％以上0.01％以下O：0.005以下％和Ti：不小于0.01％且不大于0.20％和/或Nb：不小于0.01％且不大于0.10％，余量由铁和不可避免的杂质组成，具有Mn％，Mg％，S％和O％满足方程（1）至（3），并且其结构主要包含铁素体，贝氏体和马氏体中的一种或多种。 [Mg％]≥（[O％] / 16×0.8）×24（1）[S％]＆nlE;（[Mg％] / 24- [O％] / 16×0.8±0.00012）×32（2） [S％]＆nlE; 0.0075 / [Mn％]（3）

7. 发明申请

US20070131320A1 High-strength steel sheets excellent in hole-expandability and ductility 有权
标题翻译：具有优异的孔扩展性和延展性的高强度钢板
公开(公告)号：US20070131320A1
公开(公告)日：2007-06-14
申请号：US10576227
申请日：2003-12-26
申请人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
发明人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
IPC分类号： C22C38/06
CPC分类号： C22C38/002 , B21B3/02 , C21D2211/002 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14
摘要： High-strength steel sheet excellent in hole-expandability and ductility, characterized by; comprising, in mass %, C: not less than 0.01% and not more than 0.20%, Si: not more than 1.5%, Al: not more than 1.5%, Mn: not less than 0.5% and not more than 3.5%, P: not more than 0.2%, S: not less than 0.0005% and not more than 0.009%, N: not more than 0.009%, Mg: not less than 0.0006% and not more than 0.01%, 0: not more than 0.005% and Ti: not less than 0.01% and not more than 0.20% and/or Nb: not less than 0.01% and not more than 0.10%, with the balance consisting iron and unavoidable impurities, having Mn %, Mg %, S % and O % satisfying equations (1) to (3), and having the structure primarily comprising one or more of ferrite, bainite and martensite. [Mg%]≧([O%]/16×0.8)×24 (1) [S%]≦([Mg%]/24−[O%]/16×0.8+0.00012)×32 (2) [S%]≦0.0075/[Mn%] (3)
摘要翻译：孔膨胀性和延展性优异的高强度钢板，其特征在于：以质量％计含有：不小于0.01％且不大于0.20％的Si：不大于1.5％，Al：不大于1.5％，Mn：不小于0.5％且不大于3.5％ P：0.2％以下，S：0.0005％以上0.009％以下，N：0.009％以下，Mg：0.0006％以上0.01％以下0以下0.005以下％和Ti：不小于0.01％且不大于0.20％和/或Nb：不小于0.01％且不大于0.10％，余量由铁和不可避免的杂质组成，具有Mn％，Mg％，S％和O％满足方程（1）至（3），并且其结构主要包含铁素体，贝氏体和马氏体中的一种或多种。 <？in-line-formula description =“In-line Formulas”end =“lead”？> [Mg％]> =（[O％] / 16x0.8）x24（1）<？ =“直线公式”end =“tail”？> <？in-line-formula description =“In-line formula”end =“lead”？> [S％] <=（[Mg％] / [O％] / 16x0.8 + 0.00012）x32（2）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line 公式“end =”lead“？> [S％] <= 0.0075 / [Mn％]（3）<？in-line-formula description =”In-line Formulas“end =”tail“？>

8. 发明申请

US20070071997A1 A COLD-ROLLED STEEL SHEET HAVING A TENSILE STRENGTH OF 780 MPA OR MORE, AN EXCELLENT LOCAL FORMABILITY AND A SUPPRESSED INCREASE IN WELD HARDNESS 有权
标题翻译：具有780 MPA或更高的拉伸强度的冷轧钢板，在焊接硬度方面具有优异的局部可制造性和抑制性增加
公开(公告)号：US20070071997A1
公开(公告)日：2007-03-29
申请号：US10557263
申请日：2004-01-09
申请人： Koichi Goto , Riki Okamoto , Hirokazu Taniguchi
发明人： Koichi Goto , Riki Okamoto , Hirokazu Taniguchi
IPC分类号： C22C38/00 , B32B15/18
CPC分类号： C22C38/02 , C21D8/02 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/04 , C22C38/06 , C22C38/14 , Y10T428/12799 , Y10T428/12965
摘要： The present invention provides a high-strength cold-rolled steel sheet and a high-strength surface treated steel sheet 780 MPa or more in tensile strength, said steel sheets having excellent local formability and suppressed weld hardness increase and being characterized by: said steel sheets containing, in weight, C: 0.05 to 0.09%, Si: 0.4 to 1.3%, Mn: 2.5 to 3.2%, P: 0.001 to 0.05%, N: 0.0005 to 0.006%, Al: 0.005 to 0.1%, Ti: 0.001 to 0.045%, and S in the range stipulated by the following expression (A), with the balance consisting of Fe and unavoidable impurities; the microstructures of said steel sheets being composed of bainite of 7% or more in terms of area percentage and the balance consisting of one or more of ferrite, martensite, tempered martensite and retained austenite; and said components in said steel sheets satisfying the following expressions (C) and (D) when Mneq. is defined by the following expression (B); S≦0.08×(Ti(%)−3.43×N(%)+0.004 . . . (A), where, when a value of the member Ti(%)−3.43×N(%) of said expression (A) is negative, the value is regarded as zero. MIneq.=Mn(%)−0.29 ×Si(%)+6.24×C(%) . . . (B), 950≦(Mneq./(C(%)−(Si(%)/75)))×bainite area percentage (%) . . . (C), C(%)+(Si(%)/20)+(Mn(%)/18)50.30 . . . (D).
摘要翻译：本发明提供了拉伸强度为780MPa以上的高强度冷轧钢板和高强度表面处理钢板，所述钢板具有优异的局部成形性和抑制的焊接硬度，并且其特征在于：所述钢板含有C：0.05〜0.09％，Si：0.4〜1.3％，Mn：2.5〜3.2％，P：0.001〜0.05％，N：0.0005〜0.006％，Al：0.005〜0.1％，Ti：0.001 至0.045％，S在下述表达式（A）所规定的范围内，余量由Fe和不可避免的杂质构成; 所述钢板的微结构由面积百分比为7％以上的贝氏体组成，余量由铁素体，马氏体，回火马氏体和残余奥氏体中的一种以上组成。并且所述钢板中的所述组分满足下列表达式（C）和（D）。由以下表达式（B）定义; 其中，当所述表达式（A）中的成员Ti（％） - 3.43×N（％）的值是（A）为（A）时，S <= 0.08x（Ti（％） - 3.43×N（％））负值，该值被视为零MIneq。= Mn（％） - 0.29 xSi（％）+ 6.24xC（％）...（B），950 <=（Mneq./(C(%)-(Si （％）/ 75）））黑土面积百分比（％）...（C），C（％）+（Si（％）/ 20）+（Mn（％）/ 18） > 0.30 ...（D）。

9. 发明申请

US20080135137A1 Method Fo Controlling Cooling of Steel Sheet 有权
标题翻译：钢板冷却控制方法
公开(公告)号：US20080135137A1
公开(公告)日：2008-06-12
申请号：US11795115
申请日：2005-12-08
申请人： Riki Okamoto , Noriyuki Hishinuma , Hidenori Miyata , Hirokazu Taniguchi
发明人： Riki Okamoto , Noriyuki Hishinuma , Hidenori Miyata , Hirokazu Taniguchi
IPC分类号： C21D11/00 , C21D8/02
CPC分类号： C21D8/02 , C21D9/573 , C21D11/005
摘要： A method for controlling the cooling of a steel plate, characterized in that, in the control of the temperature at the end of cooling in the process of the cooling of a steel plate from the Ae3 temperature or higher, the enthalpies (Hγ and Hα) of the austenite and ferrite phases at respective temperatures are determined in advance, a dynamic enthalpy (Hsys) defined by the formula (1) is determined from the proportion (Xγ) of untransformed austenite being determined in the correspondence to an objective temperature pattern, and a temperature of the steel plate is predicted by using an inclination of the above dynamic enthalpy to temperature as a dynamic specific heat for controlling the cooling of the steel plate. Hsys=Hγ (Xγ)+Hα (1−Xγ) . . . formula (1)
摘要翻译：一种用于控制钢板冷却的方法，其特征在于，在从3e温度以上的钢板冷却过程中冷却结束时的温度控制，预先确定各温度下的奥氏体和铁素体相的焓（Hgamma和Halpha），由式（1）定义的动态焓（Hsys）由未改性奥氏体的比例（Xgamma）确定，对应于目标温度模式，并且通过使用上述动态焓对温度的倾斜作为用于控制钢板冷却的动态比热来预测钢板的温度。 Hsys = Hgamma（Xgamma）+ Halpha（1-Xgamma）。。。公式1）

10. 发明申请

US20060231166A1 High-strength hot-rolled steel sheet excelling in bore expandability and ductility and process for producing the same 有权
标题翻译：高强度热轧钢板具有优异的孔膨胀性和延展性，以及其制造方法
公开(公告)号：US20060231166A1
公开(公告)日：2006-10-19
申请号：US10550252
申请日：2003-12-26
申请人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
发明人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
IPC分类号： C22C38/00 , C22C38/06 , B21B23/00 , C23C8/00 , C22C38/14
CPC分类号： C21D8/0405 , C21D8/0205 , C21D8/0226 , Y10T29/49991
摘要： This invention provides a high-strength hot-rolled steel sheet having strength of at least 980 N/mm2 at a sheet thickness of from about 1.0 to about 6.0 mm and excellent in hole expandability, ductility and ability of phosphate coating, which steel sheet is directed to automotive suspension components that are subjected to pressing. The high-strength hot-rolled steel sheet contains, in terms of a mass %, C: 0.01 to 0.09%, Si: 0.05 to 1.5%, Mn: 0.5 to 3.2%, Al: 0.003 to 1.5%, P: 0.03% or below, S: 0.005% or below, Ti: 0.10 to 0.25%, Nb: 0.01 to 0.05% and the balance consisting of iron and unavoidable impurities; satisfies all of the following formulas to : 0.9≦48/12×C/Ti 50,227×C−4,479×Mn>−9,860 811×C+135×Mn+602×Ti+794×Nb>465 , and has strength of at least 980 N/mm2.
摘要翻译：本发明提供一种板厚为约1.0〜6.0mm的强度为980N / mm 2以上的高强度热轧钢板，其孔膨胀性，延展性和能力优异的磷酸盐涂层，该钢板被引导到经受压制的汽车悬架部件。高强度热轧钢板以质量％计含有C：0.01〜0.09％，Si：0.05〜1.5％，Mn：0.5〜3.2％，Al：0.003〜1.5％，P：0.03％以下，S：0.005％以下，Ti：0.10〜0.25％，Nb：0.01〜0.05％，余量由铁和不可避免的杂质构成; 满足下列所有公式<1>至<3>：<？in-line-formula description =“In-line formula”end =“lead”？> 0.9 <= 48 / 12xC / Ti <1.7 <1> ？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> 50,227xC-4,479xMn> 9,860 <2> <？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> 811xC + 135xMn + 602xTi + 794xNb> 465 <3>，<？in-line-formula description =“In-line formula”end =“tail”？>，并且具有至少980 N / mm 2的强度 >。

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