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1. 发明申请

US20060169365A1 High strength cold rolled steel sheet and method for production thereof 有权
标题翻译：高强度冷轧钢板及其制造方法
公开(公告)号：US20060169365A1
公开(公告)日：2006-08-03
申请号：US10549164
申请日：2004-11-26
申请人： Yoshihiko Ono , Yasunobu Nagataki , Kozo Harada , Hisanori Ando
发明人： Yoshihiko Ono , Yasunobu Nagataki , Kozo Harada , Hisanori Ando
IPC分类号： C22C38/00 , C21D8/00
CPC分类号： C22C38/02 , C21D8/0236 , C21D8/0273 , C21D2211/005 , C22C38/04 , C22C38/06
摘要： The present invention relates to a high strength cold rolled steel sheet composed of ferrite grains having an average grain diameter of 10 μm or less, in which the average number per unit area of Nb(C, N) precipitates having a diameter of 50 nm or more is 7.0×10−2/μm2 or less, and a zone having a width of 0.2 to 2.4 μm and an average area density of NbC precipitates of 60% or less of that of the central portion of the ferrite grains is formed along grain boundaries of the ferrite grains, for example, the steel sheet consisting of 0.004 to 0.02% of C, 1.5% or less of Si, 3% or less of Mn, 0.15% or less of P, 0.02% or less of S, 0.1 to 1.5% of sol.Al, 0.001 to 0.007% of N, 0.03 to 0.2% of Nb, by mass, and the balance of Fe and inevitable impurities. The steel sheet of the present invention is most preferably used for automobile panel parts since it has the TS of 340 MPa or more and the superior surface strain resistance and press formability.
摘要翻译：本发明涉及由平均粒径为10μm以下的铁素体晶粒构成的高强度冷轧钢板，其中，直径为50nm的Nb（C，N）析出物的平均单位面积数，更优选为7.0×10 -2 / m 2以下，宽度为0.2〜2.4μm，NbC析出物的平均面密度为60％以下的区域铁素体晶粒的中心部分沿铁素体晶粒的边界形成，例如，由0.004〜0.02％的C，1.5％以下的Si，3％以下的Mn，0.15 P％以下，S：0.02％以下，Sol：Al：0.1〜1.5％，N：0.001〜0.007，Nb：0.03〜0.2％，Fe：不可避免的杂质。本发明的钢板最好用于汽车面板部件，因为其具有340MPa以上的TS和优异的表面应变阻力和冲压成形性。

2. 发明授权

US07608156B2 High strength cold rolled steel sheet and method for manufacturing the same 有权
标题翻译：高强度冷轧钢板及其制造方法
公开(公告)号：US07608156B2
公开(公告)日：2009-10-27
申请号：US10549164
申请日：2004-11-26
申请人： Yoshihiko Ono , Yasunobu Nagataki , Yasushi Tanaka , Kozo Harada , Hisanori Ando
发明人： Yoshihiko Ono , Yasunobu Nagataki , Yasushi Tanaka , Kozo Harada , Hisanori Ando
IPC分类号： C22C38/12 , C22C38/26 , C22C38/48 , C21D8/00
CPC分类号： C22C38/02 , C21D8/0236 , C21D8/0273 , C21D2211/005 , C22C38/04 , C22C38/06
摘要： This disclosure relates to a high strength cold rolled steel sheet composed of ferrite grains having an average grain diameter of 10 μm or less, in which the average number per unit area of Nb(C, N) precipitates having a diameter of 50 nm or more is 7.0×10−2/μm2 or less, and a zone having a width of 0.2 to 2.4 μm and an average area density of NbC precipitates of 60% or less of that of the central portion of the ferrite grains is formed along grain boundaries of the ferrite grains, for example, the steel sheet consisting of 0.004 to 0.02% of C, 1.5% or less of Si, 3% or less of Mn, 0.15% or less of P, 0.02% or less of S, 0.1 to 1.5% of sol.Al, 0.001 to 0.007% of N, 0.03 to 0.2% of Nb, by mass, and the balance of Fe and inevitable impurities. The steel sheet is most preferably used for automobile panel parts since it has the TS of 340 MPa or more and the superior surface strain resistance and press formability.
摘要翻译：本发明涉及由平均粒径为10μm以下的铁素体晶粒构成的高强度冷轧钢板，其中，直径为50nm以上的Nb（C，N）析出物的平均单位面积数为7.0×10 -2 / m 2以下，宽度为0.2〜2.4μm的区域和NbC析出物的平均面积密度为铁素体晶粒中央部的平均面积密度的60％以下，沿着铁素体晶粒例如由C：0.004〜0.02％，Si：1.5％以下，Mn：3％以下，P：0.15％以下，S：0.02％以下，S：0.1〜1.5 ％的溶胶A1，0.001〜0.007％的N，0.03〜0.2％的Nb，其余为Fe和不可避免的杂质。钢板最好用于汽车面板部件，因为其具有340MPa以上的TS和优异的表面应变阻力和冲压成形性。

3. 发明申请

US20060037677A1 High strength cold rolled steel sheet and method for manufacturing the same 审中-公开
标题翻译：高强度冷轧钢板及其制造方法
公开(公告)号：US20060037677A1
公开(公告)日：2006-02-23
申请号：US11050362
申请日：2005-02-03
申请人： Yoshihiko Ono , Fusato Kitano , Yasunobu Nagataki , Yasushi Tanaka , Hisanori Ando
发明人： Yoshihiko Ono , Fusato Kitano , Yasunobu Nagataki , Yasushi Tanaka , Hisanori Ando
IPC分类号： C21D8/00
CPC分类号： C22C38/06 , C21D8/0426 , C21D8/0436 , C21D8/0473 , C21D8/0478 , C22C38/02 , C22C38/04
摘要： The present invention relates to a high strength cold rolled steel sheet consisting of 0.015% or less of C, 1.5% or less of Si, 0.4 to 3% of Mn, 0.15% or less of P, 0.02% or less of S, 0.1 to 1% of sol.Al, 0.01% or less of N, 0.2% or less of Ti, by mass %, and the balance of Fe and inevitable impurities. In this steel sheet, 1≦([Ti]/48)/([C]/12+[N]/14) is satisfied, in which [M] represents the content of the element M. Since having the superior deep drawability and the TS of 340 to 590 MPa, the high strength cold rolled steel sheet of the present invention is preferably used for automobiles parts difficult to be press formed, such as a side outer panel and a door inner panel.
摘要翻译：本发明涉及由C：0.015％以下，Si：1.5％以下，Mn：0.4〜3％，P：0.15％以下，S：0.02％以下的高强度冷轧钢板至1％的Al，0.01％以下的N，0.2％以下的Ti，以质量％计，余量为Fe和不可避免的杂质。在该钢板中，满足1 <=（[Ti] / 48）/（[C] / 12 + [N] / 14），其中[M]表示元素M的含量。拉伸性和TS为340〜590MPa，本发明的高强度冷轧钢板优选用于难以压制成型的汽车零件，例如侧面板和门内板。

4. 发明授权

US06440584B1 Hot-dip galvanized steel sheet and method for producing the same 有权
标题翻译：热浸镀锌钢板及其制造方法
公开(公告)号：US06440584B1
公开(公告)日：2002-08-27
申请号：US09953788
申请日：2001-09-17
申请人： Yasunobu Nagataki , Toshiaki Urabe , Fusato Kitano , Akio Kobayashi , Kunikazu Tomita , Shunsaku Node , Kozo Harada , Shogo Sato , Toru Inazumi
发明人： Yasunobu Nagataki , Toshiaki Urabe , Fusato Kitano , Akio Kobayashi , Kunikazu Tomita , Shunsaku Node , Kozo Harada , Shogo Sato , Toru Inazumi
IPC分类号： B32B1518
CPC分类号： C21D8/0263 , C21D8/0278 , C21D9/56 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/24 , C22C38/38 , C23C2/02 , C23C2/40 , Y10S428/939 , Y10T428/12799
摘要： A hot-dip galvanized steel sheet is produced by rough rolling a steel, finish rolling the rough rolled steel at a temperature of Ar3 point or more, coiling the finish rolled steel at a temperature of 700° C. or less, and hot-dip galvanizing the coiled steel at a pre-plating heating temperature of Ac1 to Ac3. A continuous hot-dip galvanizing operation is performed by soaking a pickled strip at a temperature of 750 to 850° C., cooling the soaked strip to a temperature range of 600° C. or less at a cooling rate of 1 to 50° C. per second, hot-dip galvanizing the cooled strip, and cooling the galvanized strip so that the residence time at 400 to 600° C. is within 200 seconds. The steel sheet has a structure consisting essentially of ferrite and martensite.
摘要翻译：热轧镀锌钢板通过粗轧制造，在Ar3点以上的温度下对粗轧制品进行精轧，在700℃以下的温度下卷取精轧辊，热浸镀锌钢板以预镀层加热温度Ac1〜Ac3镀锌钢卷。通过在750〜850℃的温度下浸渍酸洗条，进行连续热浸镀锌作业，将浸渍后的钢带以1〜50℃的冷却速度冷却至600℃以下的温度范围每秒，对冷却的条进行热浸镀锌，并冷却镀锌带，使得在400至600℃的停留时间在200秒内。钢板具有由铁素体和马氏体组成的结构。

5. 发明授权

US09297052B2 High strength cold rolled steel sheet with excellent deep drawability and material uniformity in coil and method for manufacturing the same 有权
标题翻译：具有优异的深冲性和线圈材料均匀性的高强度冷轧钢板及其制造方法
公开(公告)号：US09297052B2
公开(公告)日：2016-03-29
申请号：US14351264
申请日：2012-08-23
申请人： Hideyuki Kimura , Yasunobu Nagataki , Kaneharu Okuda , Kenji Kawamura
发明人： Hideyuki Kimura , Yasunobu Nagataki , Kaneharu Okuda , Kenji Kawamura
IPC分类号： C21D8/02 , C21D9/48 , C22C38/00 , B21B1/26 , B21B3/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/60 , C21D8/04
CPC分类号： C21D8/0236 , B21B1/26 , B21B3/00 , C21D8/0263 , C21D8/0405 , C21D8/0436 , C21D8/0463 , C21D9/48 , C21D2211/005 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/60
摘要： A high strength cold rolled steel sheet includes a chemical composition containing, by mass %, C: 0.010% or more and 0.060% or less, Si: more than 0.5% and 1.5% or less, Mn: 1.0% or more and 3.0% or less, P: 0.005% or more and 0.100% or less, S: 0.010% or less, sol.Al: 0.005% or more and 0.500% or less, N: 0.0100% or less, Nb: 0.010% or more and 0.100% or less, Ti: 0.015% or more and 0.150% or less and the balance comprising Fe and inevitable impurities. The microstructure includes, in area fraction, 70% or more of a ferrite phase and 3% or more of a martensite phase. The tensile strength is 440 MPa or more and an average r value is 1.20 or more.
摘要翻译：高强度冷轧钢板包括以质量％计含有C：0.010％以上且0.060％以下，Si：大于0.5％和1.5％以下，Mn：1.0％以上3.0％以下的化学组成，以下，P：0.005％以上且0.100％以下，S：0.010％以下，sol.Al：0.005％以上且0.500％以下，N：0.0100％以下，Nb：0.010％以上，和 0.100％以下，Ti：0.015％以上且0.150％以下，余量由Fe和不可避免的杂质构成。微观结构包括面积分数为70％以上的铁素体相和3％以上的马氏体相。拉伸强度为440MPa以上，平均r值为1.20以上。

6. 发明申请

US20120279617A1 HIGH STRENGTH GALVANIZED STEEL SHEET HAVING EXCELLENT FATIGUE RESISTANCE AND STRETCH FLANGEABILITY AND METHOD FOR MANUFACTURING THE SAME 审中-公开
标题翻译：具有优异耐疲劳性和拉伸强度的高强度钢化板及其制造方法
公开(公告)号：US20120279617A1
公开(公告)日：2012-11-08
申请号：US13521078
申请日：2011-01-18
申请人： Yoshiyasu Kawasaki , Tatsuya Nakagaito , Shinjiro Kaneko , Yasunobu Nagataki
发明人： Yoshiyasu Kawasaki , Tatsuya Nakagaito , Shinjiro Kaneko , Yasunobu Nagataki
IPC分类号： B32B15/01 , B05D3/02
CPC分类号： C23C2/06 , B32B15/013 , C21D8/0205 , C21D9/46 , C21D2201/03 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/28
摘要： A steel sheet has the chemical composition containing, by mass %, C: 0.04 to 0.13%, Si: 0.9 to 2.3%, Mn: 0.8 to 1.8%, P: 0.1% or less, S: 0.01% or less, Al: 0.1% or less, N: 0.008% or less, the remainder being Fe and the inevitable impurities and a microstructure including, in terms of area ratio, a ferrite phase of 80% or more, a bainitic ferrite phase of 1.0% or more, a pearlite phase of 1.0 to 10.0%, and a martensite phase of 1.0% or more and less than 5.0%, wherein the mean grain size of ferrite is 14 μm or less, the mean grain size of martensite is 4 μm or less, the mean free path of martensite is 3 μm or more, the Vickers hardness of ferrite is 140 or more, and the relationship area ratio of martensite/(area ratio of bainitic ferrite+area ratio of pearlite) 0.6 is satisfied.
摘要翻译：钢板的化学成分以质量％计含有C：0.04〜0.13％，Si：0.9〜2.3％，Mn：0.8〜1.8％，P：0.1％以下，S：0.01％以下，Al： 0.1％以下，N：0.008％以下，剩余部分为Fe和不可避免的杂质，以及以面积比计的铁素体相为80％以上，贝氏体铁素体相为1.0％以上的组织， 1.0〜10.0％的珠光体相，1.0％以上且小于5.0％的马氏体相，铁素体的平均粒径为14μm以下，马氏体的平均粒径为4μm以下，马氏体的平均自由程为3μm以上，铁素体的维氏硬度为140以上，并且满足马氏体/（贝氏体铁素体的面积比+珠光体的面积比）0.6的关系面积比。

7. 发明授权

US07559997B2 High-strength cold rolled steel sheet and process for producing the same 有权
标题翻译：高强度冷轧钢板及其制造方法
公开(公告)号：US07559997B2
公开(公告)日：2009-07-14
申请号：US10496433
申请日：2003-06-23
申请人： Katsumi Nakajima , Takayuki Futatsuka , Yasunobu Nagataki
发明人： Katsumi Nakajima , Takayuki Futatsuka , Yasunobu Nagataki
IPC分类号： C22C38/04 , C22C38/06 , C21D8/00 , C21D8/04
CPC分类号： C22C38/06 , C21D8/0236 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/004 , C22C38/04
摘要： The invention provides a high strength cold rolled steel sheet comprising ferrite phases and second phases, in which the mean grain size of the ferrite phases is 20 μm or less, the volume fraction of the second phase is 0.1% or more to less than 10%, the absolute value |Δr| of in-plane anisotropy of r value is less than 0.15, and the thickness is 0.4 mm or more. The high strength cold rolled steel sheet of the present invention has a tensile strength of 370 to 590 MPa, and has excellent stretchability, dent resistance, surface precision, secondary working embrittlement, anti-aging, and surface appearance, therefore it is suitable for outer panels of automobile.
摘要翻译：本发明提供一种包含铁素体相和第二相的高强度冷轧钢板，其中铁素体相的平均粒径为20μm以下，第二相的体积分数为0.1％以上且小于10％，绝对值| Deltar | 的r值的面内各向异性小于0.15，厚度为0.4mm以上。本发明的高强度冷轧钢板的拉伸强度为370〜590MPa，拉伸性，耐凹陷性，表面精度，二次加工脆性，耐老化性，表面外观优异，因此适用于外部汽车面板

8. 发明申请

US20060065329A1 High strength steel sheet and method for manufacturing the same 审中-公开
标题翻译：高强度钢板及其制造方法
公开(公告)号：US20060065329A1
公开(公告)日：2006-03-30
申请号：US11271428
申请日：2005-11-10
申请人： Tadashi Inoue , Yoichi Motoyashiki , Hiroyasu Kikuchi , Sadanori Imada , Takayuki Odake , Yasunobu Nagataki , Toru Inazumi
发明人： Tadashi Inoue , Yoichi Motoyashiki , Hiroyasu Kikuchi , Sadanori Imada , Takayuki Odake , Yasunobu Nagataki , Toru Inazumi
IPC分类号： C23C2/28
CPC分类号： C21D8/0226 , C21D8/0236 , C21D8/0263 , C22C38/008 , C22C38/04 , C22C38/12 , C22C38/14 , C22C38/24 , C23C2/02
摘要： The present invention relates to a high strength steel sheet consisting essentially of 0.04 to 0.1% C, 0.5% or less Si, 0.5 to 2% Mn, 0.05% or less P, 0.005% or less O, 0.005% or less S, by weight, having 10 μm or less of average ferritic grain size, and 20 mm/mm2 or less of generation frequency A, which generation frequency A is defined as the total length of a banded secondary phase structure observed per 1 mm2 of steel sheet cross section along the rolling direction thereof. The steel sheet is manufactured by, for example, a method comprising the steps of: hot-rolling a continuously cast slab having the composition described above at temperatures of Ar3 transformation point or above directly or after reheating thereof; and cooling the hot-rolled steel sheet within 2 seconds down to the temperatures of from 600 to 750° C. at cooling speeds of from 100 to 2,000° C./sec, followed by coiling the cooled steel sheet at temperatures of from 450 to 650° C. The present invention provides a high strength steel sheet having strengths of 340 MPa or more and having excellent stretch flanging performance, ductility, and shock resistance, providing a sufficient coil shape with good surface properties, even when hot dip zinc-coating is applied.
摘要翻译：高强度钢板本发明涉及一种高强度钢板，主要由以下组成的高强度钢板：基本上由Si：0.5〜0.1％，Si：0.5〜2％，Mn：0.05％以下，P：0.005％以下，O：0.005％以下，S：平均铁素体晶粒尺寸为10μm以下，发生频率A为20mm / mm 2以下的发生频率A，将发生频率A定义为观察到的带状二相结构的总长度每1mm 2钢板横截面沿其轧制方向。钢板通过例如以下方法制造：包括以下步骤：在Ar 3相变点或更高的温度下直接或重新加热上述具有上述组成的连续铸造板坯 ; 并在200〜2000℃/秒的冷却速度下，在2秒钟内将热轧钢板冷却至600〜750℃的温度，然后将冷却后的钢板在450〜 650℃。本发明提供强度为340MPa以上且具有优异的拉伸凸缘性能，延展性和抗冲击性的高强度钢板，提供具有良好表面性能的足够的线圈形状，即使当热浸锌涂层被申请;被应用。

9. 发明授权

US09758848B2 High strength steel sheet having excellent formability and stability of mechanical properties and method for manufacturing the same 有权
公开(公告)号：US09758848B2
公开(公告)日：2017-09-12
申请号：US14113397
申请日：2012-04-20
申请人： Yoshiyasu Kawasaki , Hiroshi Hasegawa , Shinjiro Kaneko , Yasunobu Nagataki
发明人： Yoshiyasu Kawasaki , Hiroshi Hasegawa , Shinjiro Kaneko , Yasunobu Nagataki
IPC分类号： C22C38/02 , C22C38/04 , C22C38/06 , C21D8/02 , B32B15/18 , C23C2/06 , C23C2/12 , C22C38/38 , C21D9/46 , C21D6/00 , C22C38/00 , B32B15/01 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/24 , C23C2/02 , C23C2/28 , C23C2/40
CPC分类号： C22C38/38 , B32B15/012 , B32B15/013 , C21D6/005 , C21D8/0263 , C21D9/46 , C21D2211/001 , C21D2211/005 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/24 , C23C2/02 , C23C2/06 , C23C2/12 , C23C2/28 , C23C2/40 , Y10T428/12757 , Y10T428/12799
摘要： A high strength steel sheet including, by mass, C: 0.03% or more and 0.25% or less, Si: 0.4% or more and 2.5% or less, Mn: 3.5% or more and 10.0% or less, P: 0.1% or less, S: 0.01% or less, Al: 0.01% or more and 2.5% or less, N: 0.008% or less, Si+Al: 1.0% or more, the balance being Fe and inevitable impurities. The area ratio of ferrite is 30% or more and 80% or less, the area ratio of martensite is 0% or more and 17% or less, the volume fraction of retained austenite is 8% or more, and the average grain size of retained austenite is 2 μm or less.

10. 发明授权

US09617630B2 High-strength galvanized steel sheet having excellent formability and crashworthiness and method for manufacturing the same 有权
公开(公告)号：US09617630B2
公开(公告)日：2017-04-11
申请号：US13640851
申请日：2011-04-11
申请人： Shinjiro Kaneko , Tatsuya Nakagaito , Hiroshi Hasegawa , Yasunobu Nagataki
发明人： Shinjiro Kaneko , Tatsuya Nakagaito , Hiroshi Hasegawa , Yasunobu Nagataki
IPC分类号： C23C2/02 , C21D8/02 , C21D9/46 , C23C2/06 , C23C2/28 , B32B15/01 , C21D6/00 , C22C38/00 , C22C38/04 , C22C38/02 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/38
CPC分类号： C21D9/46 , B32B15/013 , C21D1/34 , C21D6/001 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D2211/002 , C21D2211/008 , C22C18/04 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/38 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/285 , C23C2/40 , Y02P10/212
摘要： A high-strength galvanized steel sheet having excellent formability and crashworthiness, including a component composition containing 0.03% to 0.13% C, 1.0% to 2.0% Si, 2.4% to 3.5% Mn, 0.001% to 0.05% P, 0.0001% to 0.01% S, 0.001% to 0.1% Al, 0.0005% to 0.01% N, and 0.0003% to 0.01% B on a mass basis, the remainder being Fe and unavoidable impurities, and a microstructure containing a tempered martensitic phase and a bainitic phase such that the sum of an area fraction of the tempered martensitic phase and an area fraction of the bainitic phase is 30% or more (the area fraction of the martensitic phase is 30% or more in the absence of the bainitic phase), wherein a distance of closest approach of the tempered martensitic phase is 10 μm or less and the contents of C, Mn, and B satisfy (1): (% Mn)+1000×(% B)≧35×(% C) (1).

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