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公开(公告)号：US20100196189A1
公开(公告)日：2010-08-05
申请号：US12670153
申请日：2008-07-31
申请人： Koichi Nakagawa , Takeshi Yokota , Nobuyuki Nakamura , Kazuhiro Seto , Satoshi Kinoshiro , Katsumi Yamada
发明人： Koichi Nakagawa , Takeshi Yokota , Nobuyuki Nakamura , Kazuhiro Seto , Satoshi Kinoshiro , Katsumi Yamada
CPC分类号： C22C38/04 , C21D8/0426 , C21D9/48 , C21D2211/004 , C21D2211/005 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/24 , C22C38/28
摘要： A high-strength steel sheet has high stretch flangeability after working and corrosion resistance after painting. The steel sheet contains, on the basis of mass percent, C: 0.02% to 0.20%, Si: 0.3% or less, Mn: 0.5% to 2.5%, P: 0.06% or less, S: 0.01% or less, Al: 0.1% or less, Ti: 0.05% to 0.25%, and V: 0.05% to 0.25%, the remainder being Fe and incidental impurities. The steel sheet has a substantially ferritic single phase, the ferritic single phase containing precipitates having a size of less than 20 nm, the precipitates containing 200 to 1750 mass ppm Ti and 150 to 1750 mass ppm V, V dissolved in solid solution being 200 or more but less than 1750 mass ppm.
摘要翻译： 高强度钢板在加工后具有高拉伸凸缘性和涂漆后的耐腐蚀性。 钢板以质量％计含有C：0.02〜0.20％，Si：0.3％以下，Mn：0.5〜2.5％，P：0.06％以下，S：0.01％以下，Al ：0.1％以下，Ti：0.05％〜0.25％，V：0.05％〜0.25％，余量为Fe和附带杂质。 钢板具有基本上铁素体的单相，铁素体单相含有尺寸小于20nm的析出物，析出物含有Ti为200〜1750质量ppm，V为150〜1750质量ppm，溶解在固溶体中的V为200或 更多但小于1750质量ppm。
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公开(公告)号：US09212411B2
公开(公告)日：2015-12-15
申请号：US13381992
申请日：2010-06-29
申请人： Koichi Nakagawa , Takeshi Yokota , Kazuhiro Seto , Satoshi Kinoshiro , Yuji Tanaka , Katsumi Yamada , Tetsuya Mega , Katsumi Nakajima
发明人： Koichi Nakagawa , Takeshi Yokota , Kazuhiro Seto , Satoshi Kinoshiro , Yuji Tanaka , Katsumi Yamada , Tetsuya Mega , Katsumi Nakajima
IPC分类号： C21D9/28 , C22C38/12 , C22C38/02 , C21D8/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/24 , C22C38/28
CPC分类号： C22C38/02 , C21D8/0226 , C21D8/0273 , C21D2211/004 , C21D2211/005 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/24 , C22C38/28 , Y10T428/12229
摘要： A high-strength steel sheet includes a composition containing, in mass percent, 0.08% to 0.20% of carbon, 0.2% to 1.0% of silicon, 0.5% to 2.5% of manganese, 0.04% or less of phosphorus, 0.005% or less of sulfur, 0.05% or less of aluminum, 0.07% to 0.20% of titanium, and 0.20% to 0.80% of vanadium, the balance being iron and incidental impurities.
摘要翻译： 高强度钢板包括以质量％计含有0.08％至0.20％的碳，0.2％至1.0％的硅，0.5％至2.5％的锰，0.04％以下的磷，0.005％以下的组合物 的硫，0.05％以下的铝，0.07〜0.20％的钛，0.20〜0.80％的钒，余量为铁和杂质。
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公开(公告)号：US20120107633A1
公开(公告)日：2012-05-03
申请号：US13381992
申请日：2010-06-29
申请人： Koichi Nakagawa , Takeshi Yokota , Kazuhiro Seto , Satoshi Kinoshiro , Yuji Tanaka , Katsumi Yamada , Tetsuya Mega , Katsumi Nakajima
发明人： Koichi Nakagawa , Takeshi Yokota , Kazuhiro Seto , Satoshi Kinoshiro , Yuji Tanaka , Katsumi Yamada , Tetsuya Mega , Katsumi Nakajima
CPC分类号： C22C38/02 , C21D8/0226 , C21D8/0273 , C21D2211/004 , C21D2211/005 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/24 , C22C38/28 , Y10T428/12229
摘要： A high-strength steel sheet includes a composition containing, in mass percent, 0.08% to 0.20% of carbon, 0.2% to 1.0% of silicon, 0.5% to 2.5% of manganese, 0.04% or less of phosphorus, 0.005% or less of sulfur, 0.05% or less of aluminum, 0.07% to 0.20% of titanium, and 0.20% to 0.80% of vanadium, the balance being iron and incidental impurities.
摘要翻译： 高强度钢板包括以质量％计含有0.08％至0.20％的碳，0.2％至1.0％的硅，0.5％至2.5％的锰，0.04％以下的磷，0.005％以下的组合物 的硫，0.05％以下的铝，0.07〜0.20％的钛，0.20〜0.80％的钒，余量为铁和杂质。
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4.发明申请STEEL SHEET EXCELLENT IN FINE BLANKING PERFORMANCE AND MANUFACTURING METHOD OF THE SAME 审中-公开优异的细腻性能及其制造方法的钢板公开(公告)号：US20090308504A1
公开(公告)日：2009-12-17
申请号：US12159017
申请日：2007-01-29
摘要： A steel sheet excellent in FB performance and also excellent in fabrication performance after FB working and a manufacturing method of the same are provided. The steel sheet is a steel sheet having a composition containing from 0.1 to 0.5% of C, not more than 0.5% of Si and from 0.2 to 1.5% of Mn in terms of % by mass, with P and S being adjusted at proper ranges and having a structure having a ferrite having an average grain size of more than 10 μm and less than 20 μm and a cementite present in the ferrite grain having an average particle size of from 0.3 to 1.5 μm. In this way, the steel sheet becomes a steel sheet excellent in FB performance, mold life and performance (side bend elongation) after FB working.
摘要翻译： 提供FB性能优异且FB加工后的制造性能优异的钢板及其制造方法。 该钢板是具有以质量％计含有C：0.1〜0.5％，Si：0.5％以下，Mn：0.2〜1.5％的组成的钢板，P和S为适当范围 并且具有平均粒度大于10μm且小于20μm的铁素体和平均粒径为0.3〜1.5μm的铁素体晶粒中存在的渗碳体的结构。 这样，钢板成为FB加工后FB性能，模具寿命和性能（侧弯伸长率）优异的钢板。
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5.发明申请Steel Sheet Excellent In Fine Blanking Performance and Manufacturing Method of the Same 审中-公开钢板优良的精细冲裁性能及其制造方法公开(公告)号：US20090173415A1
公开(公告)日：2009-07-09
申请号：US12159010
申请日：2007-01-29
CPC分类号： C21D1/18 , C21D2211/005 , C22C38/02 , C22C38/04
摘要： A steel sheet excellent in FB performance-and also excellent in fabrication performance after FB working and a manufacturing method of the same are provided. The steel sheet is a steel sheet having a composition containing from 0.1 to 0.5% of C, not more than 0.5% of Si and from 0.2 to 1.5% of Mn in terms of % by mass, with P and S being adjusted at proper ranges, and having a structure in which a ferrite has an average grain size of from 1 to 10 μm, cementite has a spheroidization ratio of 80% or more, and of the cementite, an amount Sgb of ferrite intergranular cementite which is defined by the following expression (1): Sgb(%)={Son/(Son+Sin)}×100 (wherein Son represents a total occupied area of cementite present on the ferrite grain boundary of the cementite present per unit area; and Snin represents a total occupied area of cementite present in a ferrite grain of the cementite present per unit area) is 40% or more. In this way, the steel sheet becomes a steel sheet excellent in FB performance, mold life and performance after FB working.
摘要翻译： 提供FB性能优异的钢板以及FB加工后的制造性能优异的制造方法及其制造方法。 该钢板是具有以质量％计含有C：0.1〜0.5％，Si：0.5％以下，Mn：0.2〜1.5％的组成的钢板，P和S为适当范围 并且具有铁素体的平均粒径为1〜10μm的结构，渗碳体的球化率为80％以上，渗碳体为铁素体晶间渗碳体的量Sgb，其由下述定义 表达式（1）：Sgb（％）= {Son /（Son + Sin）}×100（其中Son表示存在于每单位面积的渗碳体的铁素体晶界上存在的渗碳体的总占据面积; Snin表示总占用面积 存在于每单位面积的渗碳体的铁素体晶粒中的渗碳体的面积为40％以上。 这样，钢板成为FB工作后FB性能，模具寿命和性能优异的钢板。
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公开(公告)号：US20110271733A1
公开(公告)日：2011-11-10
申请号：US12674281
申请日：2008-08-20
IPC分类号： B21D31/00
CPC分类号： C22C38/02 , C21D1/20 , C21D8/0426 , C21D8/0463 , C21D9/48 , C21D2211/002 , C21D2211/005 , C22C38/04
摘要： A method for manufacturing a high strength hot rolled steel sheet includes heating a slab to a temperature in the range of 1150 to 1300° C.; hot rolling the slab with a finishing rolling temperature being in the range of 800 to 1000° C.; cooling the steel sheet at a mean cooling rate of 30° C./s or higher to a cooling termination temperature in the range of 525 to 625° C.; suspending cooling for a time period in the range of 3 to 10 seconds; cooling the steel sheet in such a manner that cooling of the steel sheet is nucleate boiling; and coiling the steel sheet at a temperature in the range of 400 to 550° C.
摘要翻译： 制造高强度热轧钢板的方法包括将板坯加热到1150-1300℃的温度范围内。 热轧板坯，精轧温度在800〜1000℃的范围内。 以30℃/ s以上的平均冷却速度将钢板冷却至525〜625℃的冷却终止温度。 暂停冷却一段时间在3到10秒的范围内; 以钢板的冷却成核沸腾的方式冷却钢板; 并在400〜550℃的范围内卷取钢板。
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7.发明授权公开(公告)号：US08815025B2
公开(公告)日：2014-08-26
申请号：US11592613
申请日：2006-11-03
申请人： Takeshi Yokota , Akio Kobayashi , Kazuhiro Seto , Yoshihiro Hosoya , Thomas Heller , Brigitte Hammer , Rolf Bode , Günter Stich
发明人： Takeshi Yokota , Akio Kobayashi , Kazuhiro Seto , Yoshihiro Hosoya , Thomas Heller , Brigitte Hammer , Rolf Bode , Günter Stich
CPC分类号： C21D8/0226 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14
摘要： A high strength steel, including about 0.05 to about 0.25% of C, less than about 0.5% of Si, about 0.5 to about 3.0% of Mn, not more than about 0.06% of P, not more than about 0.01% of S, about 0.50 to about 3.0% of Sol. Al, not more than about 0.02% of N, about 0.1 to about 0.8% of Mo, about 0.02 to about 0.40% of Ti, and the balance of iron and unavoidable impurities, wherein the steel has a structure formed of at least three phases including a bainite phase, and a retained austenite phase in addition to a ferrite phase having a composite carbide containing Ti and Mo dispersed and precipitated therein, wherein the total volume of the ferrite phase and the bainite phase is not smaller than 80%, the volume of the bainite phase is about 5% to about 60%, and the volume of the retained austenite phase is about 3 to about 20%.
摘要翻译： 一种高强度钢，包括约0.05至约0.25％的C，小于约0.5％的Si，约0.5至约3.0％的Mn，不大于约0.06％的P，不大于约0.01％的S， 约0.50至约3.0％的Sol。 Al，不大于约0.02％的N，约0.1至约0.8％的Mo，约0.02至约0.40％的Ti，余量为铁和不可避免的杂质，其中钢具有由至少三相形成的结构 包括贝氏体相和残留奥氏体相以及其中分散有析出Ti和Mo的复合碳化物的铁素体相，其中铁素体相和贝氏体相的总体积不小于80％，体积 的贝氏体相为约5％至约60％，并且残余奥氏体相的体积为约3至约20％。
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公开(公告)号：US08646301B2
公开(公告)日：2014-02-11
申请号：US12674281
申请日：2008-08-20
CPC分类号： C22C38/02 , C21D1/20 , C21D8/0426 , C21D8/0463 , C21D9/48 , C21D2211/002 , C21D2211/005 , C22C38/04
摘要： A method for manufacturing a high strength hot rolled steel sheet includes heating a slab to a temperature in the range of 1150 to 1300° C.; hot rolling the slab with a finishing rolling temperature being in the range of 800 to 1000° C.; cooling the steel sheet at a mean cooling rate of 30° C./s or higher to a cooling termination temperature in the range of 525 to 625° C.; suspending cooling for a time period in the range of 3 to 10 seconds; cooling the steel sheet in such a manner that cooling of the steel sheet is nucleate boiling; and coiling the steel sheet at a temperature in the range of 400 to 550° C.
摘要翻译： 制造高强度热轧钢板的方法包括将板坯加热到1150-1300℃的温度范围内。 热轧板坯，精轧温度在800〜1000℃的范围内。 以30℃/ s以上的平均冷却速度将钢板冷却至525〜625℃的冷却终止温度。 暂停冷却一段时间在3到10秒的范围内; 以钢板的冷却成核沸腾的方式冷却钢板; 并在400〜550℃的范围内卷取钢板。
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公开(公告)号：US20090095381A1
公开(公告)日：2009-04-16
申请号：US11989182
申请日：2006-08-03
申请人： Tamako Ariga , Takeshi Yokota , Akio Kobayashi , Kazuhiro Seto
发明人： Tamako Ariga , Takeshi Yokota , Akio Kobayashi , Kazuhiro Seto
CPC分类号： C23C2/06 , C21D9/46 , C21D2211/005 , C22C38/04 , C22C38/12 , C22C38/14 , C23C2/02 , Y10T428/12757 , Y10T428/12799
摘要： A high tensile steel sheet having 980 MPa or higher tensile strength with excellent elongation and stretch-flange formability, suitable for the press-forming of complex cross sectional shape such as automobile parts, is manufactured by adjusting the steel to consist essential of a ferrite single phase structure, to precipitate carbide containing Ti, Mo, and V, of smaller than 10 nm of average particle size, in dispersed state, and to have an average composition of the carbide containing Ti, Mo, and V satisfying [V/(Ti+Mo+V)≧0.3 (atomic ratio].
摘要翻译： 通过调整钢来制造适用于汽车零件等复杂截面形状的压制成型的拉伸强度高达980MPa或更高的拉伸强度和拉伸凸缘成形性的高强度钢板， 在分散状态下析出平均粒径小于10nm的Ti，Mo和V的碳化物，使含有Ti，Mo和V的碳化物的平均组成满足[V /（Ti + Mo + V）> = 0.3（原子比）。
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10.发明授权公开(公告)号：US08628630B2
公开(公告)日：2014-01-14
申请号：US13390198
申请日：2010-08-19
申请人： Akio Kobayashi , Yoshimasa Funakawa , Kazuhiro Seto , Nobuyuki Kageyama , Tetsuo Yamamoto , Toru Hoshi , Takeshi Yokota
发明人： Akio Kobayashi , Yoshimasa Funakawa , Kazuhiro Seto , Nobuyuki Kageyama , Tetsuo Yamamoto , Toru Hoshi , Takeshi Yokota
摘要： A hot-pressed steel sheet member has a composition containing, by mass, C: 0.09% to 0.38%, Si: 0.05% to 2.0%, Mn: 0.5% to 3.0%, P: 0.05% or less, S: 0.05% or less, Al: 0.005% to 0.1%, N: 0.01% or less, Sb: 0.002% to 0.03%, and the balance being Fe and inevitable impurities, and having a tensile strength TS of 980 to 2,130 MPa.
摘要翻译： 热压钢板构件的组成为：C：0.09〜0.38％，Si：0.05〜2.0％，Mn：0.5〜3.0％，P：0.05％以下，S：0.05％ 以下，Al：0.005〜0.1％，N：0.01％以下，Sb：0.002〜0.03％，余量为Fe和不可避免的杂质，拉伸强度TS为980〜2130MPa。
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