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1.发明申请High-stiffness high-strength thin steel sheet and method for producing the same 审中-公开高强度高强度薄钢板及其制造方法公开(公告)号：US20070144633A1
公开(公告)日：2007-06-28
申请号：US10578524
申请日：2005-03-31
申请人： Taro Kizu , Kaneharu Okuda , Toshiaki Urabe , Hiromi Yoshida , Yoshihiro Hosoya
发明人： Taro Kizu , Kaneharu Okuda , Toshiaki Urabe , Hiromi Yoshida , Yoshihiro Hosoya
IPC分类号： C21D8/02
CPC分类号： C22C38/02 , C21D9/46 , C21D2211/005 , C21D2211/008 , C22C38/04 , C22C38/14
摘要： There is provided a high-stiffness high-strength thin steel sheet having a tensile strength of not less than 590 MPa and a Young's modulus of not less than 230 GPa, which comprises C: 0.02-0.15%, Si: not more than 1.5%, Mn: 1.0-3.5%, P: not more than 0.05%, S: not more than 0.01%, Al: not more than 1.5%, N: not more than 0.01% and Ti: 0.02-0.50% as mass %, provided that C, N, S and Ti contents satisfy Ti*=Ti−(47.9/14)×N−(47.9/32.1)×S≧0.01 and 0.01≦C−(12/47.9)×Ti*≧0.05 and the remainder being substantially iron and inevitable impurities, and has a texture comprising a ferrite phase as a main phase and having a martensite phase at an area ratio of not less than 1%.
摘要翻译： 提供抗拉强度不低于590MPa，杨氏模量不小于230GPa的高刚度高强度薄钢板，其包含C：0.02-0.15％，Si：不大于1.5％ ，Mn：1.0-3.5％，P：不大于0.05％，S：0.01％以下，Al：1.5％以下，N：0.01％以下，Ti：0.02-0.50％ 条件是C，N，S和Ti含量满足Ti * = Ti-（47.9 / 14）xN-（47.9 / 32.1）xS> 0.01和0.01 <= C-（12 / 47.9）xTi *> = 0.05， 余量基本上是铁和不可避免的杂质，并且具有包含铁素体相作为主相并且具有不小于1％的面积比的马氏体相的织构。
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2.发明授权公开(公告)号：US07686896B2
公开(公告)日：2010-03-30
申请号：US10566852
申请日：2004-09-17
CPC分类号： C22C38/02 , C21D8/04 , C21D2211/005 , C21D2211/008 , C22C38/04 , C22C38/06 , C22C38/12
摘要： A high-strength steel sheet is useful for applications to automobile steel sheets and the like and has excellent deep drawability, a tensile strength (TS) of as high as 440 MPa or more, and a high r value (average r value ≧1.2), and a process for producing the steel sheet. The steel sheet has a composition containing, by % by mass, 0.010 to 0.050% of C, 1.0% or less of Si, 1.0 to 3.0% of Mn, 0.005 to 0.1% of P, 0.01% or less of S, 0.005 to 0.5% of Al, 0.01% or less of N, and 0.01 to 0.3% of Nb, the Nb and C contents in steel satisfying the relation, (Nb/93)/(C/12)=0.2 to 0.7, and the balance substantially including Fe and inevitable impurities. The steel microstructure contains a ferrite phase and a martensite phase at area ratios of 50% or more and 1% or more, respectively, and the average r value is 1.2 or more.
摘要翻译： 高强度钢板对于汽车用钢板等的应用是有用的，具有优异的深冲性，拉伸强度（TS）高达440MPa以上，高r值（平均r值≥1.2） ，以及钢板的制造方法。 该钢板的组成为：以质量％计含有C：0.010〜0.050％，Si：1.0％以下，Mn：1.0〜3.0％，P：0.005〜0.1％，S：0.01〜 满足关系式（Nb / 93）/（C / 12）= 0.2〜0.7的钢中的Nb和C含量为0.5％，Al为0.01％以下，Nb为0.01〜0.3％ 基本上包含Fe和不可避免的杂质。 钢微结构分别含有50％以上且1％以上的铁素体相和马氏体相，平均r值为1.2以上。
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3.发明申请High-Stiffness High-Strength Thin Steel Sheet and Method For Producing the Same 审中-公开高刚度高强度薄钢板及其制造方法公开(公告)号：US20080118390A1
公开(公告)日：2008-05-22
申请号：US10578525
申请日：2005-03-31
申请人： Taro Kizu , Kaneharu Okuda , Toshiaki Urabe , Hiromi Yoshida , Yoshihiro Hosoya
发明人： Taro Kizu , Kaneharu Okuda , Toshiaki Urabe , Hiromi Yoshida , Yoshihiro Hosoya
CPC分类号： C21D8/0205 , C21D9/46 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/04
摘要： There is provided a high-stiffness high-strength thin steel sheet having a tensile strength of not less than 590 MPa and a Young's modulus of not less than 225 GPa, which comprises C: 0.02-0.15%, Si: not more than 1.5%, Mn: 1.5-4.0%, P: not more than 0.05%, S: not more than 0.01%, Al: not more than 1.5%, N: not more than 0.01% and Nb: 0.02-0.40% as mass %, provided that C, N and Nb contents satisfy 0.01≦C+(12/14)×N−(12/92.9)×Nb≦0.06 and N≦(14/92.9)×(Nb−0.01) and the remainder being substantially iron and inevitable impurities, and has a texture comprising a ferrite phase as a main phase and having a martensite phase at an area ratio of not less than 1%.
摘要翻译： 提供了抗拉强度不低于590MPa，杨氏模量不小于225GPa的高强度高强度薄钢板，其包含C：0.02-0.15％，Si：不大于1.5％ ，Mn：1.5〜4.0％，P：0.05％以下，S：0.01％以下，Al：1.5％以下，N：0.01％以下，Nb：0.02〜0.40质量％ 条件是C，N和Nb含量满足0.01 <= C +（12/14）xN-（12 / 92.9）xNb <= 0.06和N <=（14 / 92.9）x（Nb-0.01） 和不可避免的杂质，并且具有包含铁素体相作为主相并且具有不小于1％的面积比的马氏体相的织构。
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4.发明申请公开(公告)号：US20060191612A1
公开(公告)日：2006-08-31
申请号：US10566852
申请日：2004-09-17
IPC分类号： C22C38/12
CPC分类号： C22C38/02 , C21D8/04 , C21D2211/005 , C21D2211/008 , C22C38/04 , C22C38/06 , C22C38/12
摘要： The present invention provides a high-strength steel sheet useful for applications to automobile steel sheets and the like and having excellent deep drawability, a tensile strength (TS) of as high as 440 MPa or more, and a high r value (average r value≧1.2), and a process for producing the steel sheet. The steel sheet has a composition containing, by % by mass, 0.010 to 0.050% of C, 1.0% or less of Si, 1.0 to 3.0% of Mn, 0.005 to 0.1% of P, 0.01% or less of S, 0.005 to 0.5% of Al, 0.01% or less of N, and 0.01 to 0.3% of Nb, the Nb and C contents in steel satisfying the relation, (Nb/93)/(C/12)=0.2 to 0.7, and the balance substantially including Fe and inevitable impurities. The steel microstructure contains a ferrite phase and a martensite phase at area ratios of 50% or more and 1% or more, respectively, and the average r value is 1.2 or more.
摘要翻译： 本发明提供一种用于汽车用钢板等的高强度钢板，其拉伸强度（TS）高达440MPa以上，高r值（平均r值 > = 1.2），以及钢板的制造方法。 该钢板的组成为：以质量％计含有C：0.010〜0.050％，Si：1.0％以下，Mn：1.0〜3.0％，P：0.005〜0.1％，S：0.01〜 满足关系式（Nb / 93）/（C / 12）= 0.2〜0.7的钢中的Nb和C含量为0.5％，Al为0.01％以下，Nb为0.01〜0.3％ 基本上包含Fe和不可避免的杂质。 钢微结构分别含有50％以上且1％以上的铁素体相和马氏体相，平均r值为1.2以上。
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公开(公告)号：US5116435A
公开(公告)日：1992-05-26
申请号：US330926
申请日：1989-03-27
CPC分类号： C22C38/02 , C21D8/1222 , C22C38/06
摘要： A method for producing a non-oriented electrical steel sheet with precise thickness and homogeneous magnetic property comprising the steps of: making a steel ingot which has: 0.01 wt. % or less C, 0.003 wt. % or less N, 0.01 to 1.0 wt. % Mn, Al and Si satisfying, in wt. %, the formulas of: ##EQU1## provided that (Si %) represents the Si (wt. %) and (Al %) represents Al content (wt. %), and the balance being Fe and inevitable impurities to produce a steel slab; hot-rolling the slab at a finishing temperature of 700.degree. to 900.degree. C. into a steel strip and coiling the hot rolled strip; and cold-rolling the hot-rolled strip into a cold-rolled strip, followed by annealing the cold-rolled strip.
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公开(公告)号：US5108521A
公开(公告)日：1992-04-28
申请号：US747381
申请日：1991-08-20
CPC分类号： C21D8/1222 , C21D8/1272
摘要： For enabling the manufacture of non-oriented steel strips by HDR, the amounts of AlN and MnS which precipitate on the way of HDR are decreased to such a level that they do not affect the magnetic properties by regulating the Al and S contents, and further unavoidable precipitating nitrides are precipitated as coarse BN. With regard to the steel composition, the amounts of C, Si and P are not only regulated, but also the amounts of Mn, Al, S and N are regulated from the above standpoint, and a proper amount of B is added if required. In addition, in regard to treatment conditions, in order to secure necessary finishing and coiling temperatures, the lower limit of the slab temperature at the starting time of HDR is specified. Moreover, to secure precipitation of BN and recrystallization of a ferrite structure, the lower limits of the finishing and coiling temperatures are specified. Furthermore, to secure the magnetic properties after cold rolling, the strips are finally continuously annealed at the determined temperature.
摘要翻译： 为了能够通过HDR制造未取向钢带，在HDR路径上沉淀的AlN和MnS的量降低到通过调节Al和S含量而不影响磁性的水平，进一步 不可避免的沉淀氮化物作为粗大BN沉淀。 关于钢组成，C，Si和P的量不仅受到限制，而且从上述观点考虑，调节Mn，Al，S和N的量，如果需要，则添加适量的B。 此外，关于处理条件，为了确保必要的精加工和卷取温度，规定了在HDR的开始时刻的板坯温度的下限。 此外，为了确保BN的析出和铁素体结构的再结晶，规定了精加工和卷取温度的下限。 此外，为了确保冷轧后的磁性能，最终在确定的温度下连续退火。
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公开(公告)号：US5169457A
公开(公告)日：1992-12-08
申请号：US432740
申请日：1989-10-17
CPC分类号： C21D8/1222 , C21D8/1261
摘要： A steel slab containing not more than 0.005 wt % carbon, 1.0 to 4.0 wt % silicon, 0.1 to 1.0 wt % manganese, not more than 0.1 wt % phosphorus, not more than 0.005 wt % sulfur, and 0.1 to 2.0 wt % aluminum is directly sent to a hot rolling step without brief soaking, whereby Al and N are made soluble with respect to species other than AlN inevitably precipitated during hot rolling, and uniform and coarse AlN precipitation is formed by a subsequent annealing treatment in which the hot rolled plate is soaked at a temperature of 800.degree. to 1000.degree. C. for a period of time t defined as exp (-0.018T+19.4) .ltoreq.t.ltoreq.exp (-0.022T+25.4) wherein T is the soaking temperature (.degree.C.) and t is the soaking time (minutes). Uniform and satisfactory ferrite grain growth at the recrystallization annealing is provided thereby.
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8.发明授权Method of making non-oriented electrical steel sheets having excellent magnetic properties 失效制造具有优异磁性的非定向电工钢板的制造方法
公开(公告)号：US5116436A
公开(公告)日：1992-05-26
申请号：US476508
申请日：1990-06-13
CPC分类号： C21D8/1222
摘要： Non-oriented electrical steel sheets having excellent magnetic properties are produced by carrying out a coiling at a low temperature for monitoring the amount of scale generation; de-scaling after hot rolling; and annealing the de-scaled hot rolled sheet in a non-oxidizing atmosphere to thereby minimize the oxidation and nitriding during annealing the hot rolled sheet. By determining a higher heating temperature for hot rolling, a magnetic property (magnetic flux density) is improved, and the hot rolled sheet is subjected to an open coil-annealing and annealing conditions therefor are specified in order to perfectly precipitate re-solute AlN particles by this heating and fully coarsen AlN particles.
摘要翻译： PCT No.PCT / JP89 / 00440 Sec。 371日期1990年6月13日 102（e）日期1990年6月13日PCT 1989年4月26日PCT公布。 WO90 / 12897 PCT出版物 1990年11月1日。通过在低温下进行卷取来制造具有优异磁性的非取向电工钢板，用于监测规模生成量; 热轧后去垢; 并在非氧化性气氛中退火脱鳞热轧板，从而使热轧板退火时的氧化和氮化最小化。 通过确定用于热轧的较高的加热温度，提高了磁性（磁通密度），并且对热轧板进行开放的线圈退火和规定退火条件以便完全沉淀再溶质AlN颗粒 通过这种加热和完全粗化的AlN颗粒。
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公开(公告)号：US5061321A
公开(公告)日：1991-10-29
申请号：US425179
申请日：1989-10-12
CPC分类号： C23G1/08
摘要： The present invention provides a pickling method for electrical steel bands having excellent surface properties without requiring any especial treatment and increasing costs, where the pickling conditions of the hot rolled steel band are optimized not only in view of de-scaling properties but also interglanular corrosions, and the pickling is performed with hydrochloric acid for a period of a specified time determined by Si content of steel, temperature and HCl concentration of a pickling liquid.
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公开(公告)号：US5062906A
公开(公告)日：1991-11-05
申请号：US427108
申请日：1989-10-12
CPC分类号： C21D8/1222 , C21D8/12
摘要： The present invention is to produce non-oriented electrical steel sheet by a hot direct rolling. The slab is directly sent to the hot rolling without the brief soaking, whereby others than AlN inevitably precipitated check the precipitation of AlN, a roughing and a finish rolling are performed at determined reduction rates, and a delay time is taken between the roughing and the finish rolling, and besides a finish rolling is performed at not more than Ar.sub.3 so that precipitating nuclei of AlN are effectively introduced into the steel, and uniform and coarse AlN precipitation is formed by a coiling at temperature of more than 700.degree. C., thereby to enable to provide uniform and satisfied ferrite grain growth at the recrystallization annealing.
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