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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：US5078809A
公开(公告)日：1992-01-07
申请号：US258481
申请日：1988-10-17
CPC分类号： H01L29/66712 , C21D8/0436 , C22C38/00 , C21D8/0426 , C21D8/0473
摘要： A method for producing cold-rolled steel sheets which comprises the steps of: producing slabs containing 0.001-0.003 wt. % C, 0.004 wt. % or less N and 0.03-0.20 wt. % P, providing that P(wt. %).times.N(wt. %).ltoreq.3.times.10.sup.-4 wt. % is satisfied; hot-rolling the slabs into hot-rolled steel strips; cold-rolling the hot-rolled steel strips at 60-95% reduction ratio into cold-rolled steel strips; and annealing continuously the cold-rolled strips at temperature of recrystallization temperature to Ac.sub.3 transformation point temperature. The slabs further include 0.0005-0.0030 wt. % B. The hot-rolling is performed at finishing temperature ranging Ar.sub.3 transfromation point to Ar.sub.3 transformation +100.degree. C., at cooling temperature of 750.degree. C. and less.
摘要翻译： 一种冷轧钢板的制造方法，其特征在于，包括以下工序：制造含有0.001-0.003重量％ ％C，0.004wt。 ％或更少的N和0.03-0.20wt。 ％P，条件是P（wt。％）xN（wt。％）= 3×10 -4 wt。 ％满意; 将板坯热轧成热轧钢带; 将热轧钢带以60-95％的比例冷轧成冷轧钢带; 并在再结晶温度下将冷轧带材连续退火至Ac3相变点温度。 板坯还包括0.0005-0.0030重量％ ％B。在Ar3转化温度至Ar3转变+100℃的终温度下，在750℃以下的冷却温度下进行热轧。
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公开(公告)号：US5102478A
公开(公告)日：1992-04-07
申请号：US748180
申请日：1991-08-20
CPC分类号： C21D8/1244 , C21D8/1222 , C21D8/1261 , C21D8/1272
摘要： For enabling the making of non-oriented magnetic steel strips by direct rolling, the amounts of AlN and MnS which precipitate on the way of the direct rolling are decreased to such a level that they do not affect the magnetic properties by regulting the Al and S amounts, and further unavoidable precipitating nitrides are precipitated coarsely as BN. With regard to the steel composition, the amount 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 the direct rolling is specified. Moreover, to promote refining of ferrite, the upper limit of the finishing temperature is specified, and also to prevent non-uniform recrystallization after coiling, the upper limit of the coiling temperature is specified. Furthermore, to secure satisfied magnetic properties, the annealing of the hot rolled strip is performed under specific conditions determined by a soaking temperature and a soaking time. In addition, to secure the magnetic properties of the cold rolled strip, the strip is finally continuously annealed at determined temperatures.
摘要翻译： 为了通过直接轧制制造无取向磁钢带，在直接轧制过程中沉淀的AlN和MnS的量减少到这样的水平，即它们不会通过抛光Al和S而影响磁性能 量，进一步不可避免的析出氮化物粗大地析出为BN。 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，规定了在直接轧制的起始时刻的板坯温度的下限。 此外，为了促进铁素体的精制，规定了终轧温度的上限，并且为了防止卷取后的不均匀的再结晶，规定了卷取温度的上限。 此外，为了确保满足的磁特性，热轧带材的退火在由均热温度和均热时间确定的特定条件下进行。 另外，为了确保冷轧带材的磁特性，最终在确定的温度下连续退火。
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14.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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公开(公告)号：US20070122554A1
公开(公告)日：2007-05-31
申请号：US10575054
申请日：2004-12-16
申请人： Hiroshi Matsuda , Shoichiro Taira , Keisuke Ono , Toshiaki Urabe , Yasunobu Nagataki , Yasushi Tanaka , Michitaka Sakurai , Yoshiharu Sugimoto
发明人： Hiroshi Matsuda , Shoichiro Taira , Keisuke Ono , Toshiaki Urabe , Yasunobu Nagataki , Yasushi Tanaka , Michitaka Sakurai , Yoshiharu Sugimoto
IPC分类号： B05D3/02
CPC分类号： C22C38/18 , B32B15/013 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/38 , C23C2/06 , C23C2/28
摘要： A galvannealed steel sheet is manufactured by preparing a hot-dip galvanized steel sheet, alloying the steel sheet, and controlling time and temperature for alloying thereof depending on Si and Al contents. The hot-dip galvanized steel sheet contains 0.05 to 0.30% C, 0.01 to 2.0% Si, 0.08 to 3.0% Mn, 0.003 to 0.1% P, 0 to 0.07% S, 0.01 to 2.5% Al, 0 to 0.007% N, by mass, and the balance being Fe and inevitable impurities. Alloying time and temperature are controlled by the formula [Si+Al≧1.5×10−7×t0.75×(T−465)3+0.117], where t is the total time (sec) of holding the sheet at 465° C. or more on alloying the coating layer thereon, and T is the average temperature (° C.) of the sheet during the total time t (sec) of holding the steel sheet at 465° C. or more on alloying the coating layer thereon.
摘要翻译： 通过制备合金化钢板的热镀锌钢板，根据Si和Al含量控制其合金化的时间和温度来制造合金化热浸镀锌钢板。 该热镀锌钢板含有0.05〜0.30％的C，0.01〜2.0％的Si，0.08〜3.0％的Mn，0.003〜0.1％的P，0〜0.07％的S，0.01〜2.5％的Al，0〜0.007％的N， ，余量为Fe和不可避免的杂质。 合金时间和温度由公式[Si + Al> = 1.5×10 -7 -7×0.75×（T-465）3 + 0.117]，其中t是在465℃或更高的时间将片材保持在其上的涂层上的总时间（秒），T是在总时间t内的片材的平均温度（℃）（℃） 秒），使钢板在其上合金化时为465℃以上。
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16.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：US06767417B2
公开(公告)日：2004-07-27
申请号：US10255349
申请日：2002-09-26
申请人： Takeshi Fujita , Kenichi Mitsuzuka , Nobuyuki Nakamura , Toshiaki Urabe , Katsutoshi Ito , Hideyuki Tsurumaru
发明人： Takeshi Fujita , Kenichi Mitsuzuka , Nobuyuki Nakamura , Toshiaki Urabe , Katsutoshi Ito , Hideyuki Tsurumaru
IPC分类号： C22C3814
CPC分类号： C22C38/02 , C21D1/42 , C21D9/46 , C21D2211/003 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/06 , C22C38/14 , Y02P10/253
摘要： The present invention relates to a steel sheet that consists essentially of 0.10 to 0.37% C, 1% or less Si, 2.5% or less Mn, 0.1% or less P, 0.03% or less S, 0.01 to 0.1% sol.Al, 0.0005 to 0.0050% N, 0.0003 to 0.0050% B, by mass, and balance of Fe, [14B/(10.8N)] being 0.5 or more, average particle size of precipitate BN being 0.1 &mgr;m or more, and grain size of prior austenite after the hardening treatment being 2 to 25 &mgr;m. The steel sheet according to the present invention allows an inexpensive hardening treatment method to be applied to improve the strength to a level required for the structural components and the functional components of automobiles, while providing excellent toughness after the hardening treatment.
摘要翻译： 本发明涉及一种钢板，其主要由0.10〜0.37％的C，1％以下的Si，2.5％以下的Mn，0.1％以下的P，0.03％以下的S，0.01〜0.1％的溶胶， 0.0005〜0.0050％N，0.0003〜0.0050％B，质量％，余量为Fe，[14B /（10.8N）]为0.5以上，析出物BN的平均粒径为0.1μm以上， 硬化处理后的奥氏体为2〜25μm。 根据本发明的钢板允许采用便宜的硬化处理方法，以提高强度达到汽车的结构部件和功能部件所需的水平，同时在硬化处理之后提供优异的韧性。
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18.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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公开(公告)号：US07507307B2
公开(公告)日：2009-03-24
申请号：US10485229
申请日：2003-06-06
IPC分类号： C21D8/02
CPC分类号： C22C38/02 , C21D1/19 , C21D8/0236 , C21D8/0273 , C21D9/52 , C22C38/04
摘要： The present invention provides a method for manufacturing an ultra high strength cold-rolled steel sheet, comprising the step of continuously annealing a cold-rolled steel sheet consisting essentially of, in terms of weight percentages, 0.07 to 0.15% C, 0.7 to 2% Si, 1.8 to 3% Mn, 0.02% or less P, 0.01% or less S, 0.01 to 0.1% Sol. Al, 0.005% or less N, 0.0003 to 0.003% B, and the balance being Fe, in which such continuous annealing comprises the steps of: heating the cold-rolled steel sheet at from 800° C. to 870° C. for 10 seconds or more; slowly cooling the heated steel sheet down to from 650° C. to 750° C.; rapidly cooling the slowly cooled steel sheet down to 100° C. or less at a cooling speed of over 500° C./sec; reheating the rapidly cooled steel sheet at from 325° C. to 425° C. for from 5 minutes to 20 minutes; cooling the reheated steel sheet down to room temperature; and coiling the cooled steel sheet. According to the invention, the ultra high strength cold-rolled steel sheet, for use in a structural member of automobile, which has a tensile strength of 980 MPa or more and is excellent in stretch-flangeability, ductility, and spot-weldability can be obtained.
摘要翻译： 本发明提供一种超高强度冷轧钢板的制造方法，其特征在于，包括下述工序：对冷轧钢板进行连续退火，所述冷轧钢板主要由以重量％计，0.07〜0.15％，0.7〜2％ Si，1.8〜3％Mn，0.02％以下P，0.01％以下S，0.01〜0.1％Sol。 Al，0.005％以下的N，0.0003〜0.003％的B，余量为Fe，其中这种连续退火包括以下步骤：将冷轧钢板从800℃加热至870℃10 秒或以上; 将加热的钢板缓慢冷却至650℃至750℃; 在500℃/秒的冷却速度下将缓慢冷却的钢板快速冷却至100℃或更低。 将快速冷却的钢板从325℃加热至425℃5分钟至20分钟; 将再热钢板冷却至室温; 并卷取冷却后的钢板。 根据本发明，用于汽车结构部件的拉伸强度为980MPa以上且拉伸凸缘性，延展性，点焊性优异的超高强度冷轧钢板可以是 获得。
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20.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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