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1. 发明授权

US06689229B2 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：US06689229B2
公开(公告)日：2004-02-10
申请号：US10122860
申请日：2002-04-15
申请人： Takeshi Fujita , Fusato Kitano , Yoshihiro Hosoya , Toru Inazumi , Yuji Yamasaki , Masaya Morita , Yasunobu Nagataki , Kohei Hasegawa , Hiroshi Matsuda , Moriaki Ono
发明人： Takeshi Fujita , Fusato Kitano , Yoshihiro Hosoya , Toru Inazumi , Yuji Yamasaki , Masaya Morita , Yasunobu Nagataki , Kohei Hasegawa , Hiroshi Matsuda , Moriaki Ono
IPC分类号： C21D802
CPC分类号： C22C38/12 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06
摘要： A high strength cold rolled steel sheet consists essentially of 0.0040 to 0.01% C, not more than 0.05% Si, 0.1 to 1.0% Mn, 0.01 to 0.05% P, not more than 0.02% S, 0.01 to 0.1% sol.Al, not more than 0.004% N, 0.01 to 0.14% Nb, by weight, and a balance of substantially Fe and inevitable impurities, and having an n value of not less than 0.21 calculated from two points (1% and 10%) of nominal strain determined by the uniaxial tensile test, and a method for manufacturing the cold rolled steel sheet. The high strength cold rolled steel sheet has excellent combined formability, resistance to embrittlement during secondary operation, formability at welded portions, and anti-burring performance, and has a desirable surface appearance and uniformity of material in a coil, and thus can be desirably used for automobile exterior panels.
摘要翻译：高强度冷轧钢板主要由0.0040〜0.01％的C，不大于0.05％的Si，0.1〜1.0％的Mn，0.01〜0.05％的P，不大于0.02％的S，0.01〜0.1％的溶胶，Al，不超过0.004％的N，0.01〜0.14％的Nb，以及余量基本上为Fe和不可避免的杂质，并且由标称应变的两个点（1％和10％）计算出的n值不小于0.21 通过单轴拉伸试验确定，以及冷轧钢板的制造方法。高强度冷轧钢板具有优异的组合成形性，二次加工中的脆性耐受性，焊接部的成形性和抗起毛性，并且具有优选的线圈材料的表面外观和均匀性，因此可以理想地使用用于汽车外部面板。

2. 发明授权

US5853903A Steel sheet for excellent panel appearance and dent resistance after panel-forming 失效
标题翻译：板材外观优异，板材成型后耐凹陷性好
公开(公告)号：US5853903A
公开(公告)日：1998-12-29
申请号：US847896
申请日：1997-04-28
申请人： Yoshihiro Hosoya , Fusato Kitano , Yasunobu Nagataki
发明人： Yoshihiro Hosoya , Fusato Kitano , Yasunobu Nagataki
IPC分类号： C22C38/12 , C22C38/14 , B32B15/01
CPC分类号： C22C38/12 , C22C38/14 , Y10T428/12868
摘要： A cold-rolled steel sheet or a zinc or zinc alloy layer coated steel sheet containing 0.0010 to 0.01 wt % of C and having a steel composition containing one or two kinds of 0.005 to 0.08 wt % of Nb and 0.01 to 0.07 wt % of Ti in the ranges given by {(12/93)Nb+(12/48)Ti*} .gtoreq.0.0005, 0.ltoreq.C-{(12/93)Nb+(12/48)Ti*}.ltoreq.0.0015, and Ti*=Ti-{(48/32)S+(48/14)N } , in which a bake hardenability BH f the steel sheet at 170.degree. C..times.20 min after 2% tensile prestrain is 10 to 35 MPa and the BH (MPa) and a yield strength YP (MPa) of the steel sheet satisfy the ranges given by BH.gtoreq.exp(-0.115.multidot.YP+23.0) and 0.67.multidot.BH+160.ltoreq.YP.ltoreq.-0.8.multidot.BH+280.
摘要翻译：含有0.0010〜0.01重量％的C，含有Nb或0.005〜0.08重量％的Nb和0.01〜0.07重量％的Ti的钢组合物的冷轧钢板或锌或锌合金层被覆钢板在{（12/93）Nb +（12/48）Ti *}> = 0.0005,0.0- =（（12/93）Nb +（12/48）Ti *} = 0.0015的范围内，Ti * = Ti-{（48/32）S +（48/14）N}，其中在2％拉伸预应变之后，170℃×120分钟钢板的烘烤淬透性BH f为10〜35MPa，钢板的BH（MPa）和屈服强度YP（MPa）满足由BH> / = exp（-0.115×YP + 23.0）和0.67×BH + 160

3. 发明授权

US06494969B1 High strength cold rolled steel sheet and method for manufacturing the same 有权
公开(公告)号：US06494969B1
公开(公告)日：2002-12-17
申请号：US09631600
申请日：2000-08-03
申请人： Takeshi Fujita , Fusato Kitano , Yoshihiro Hosoya , Toru Inazumi , Yuji Yamasaki , Masaya Morita , Yasunobu Nagataki , Kohei Hasegawa , Hiroshi Matsuda , Moriaki Ono
发明人： Takeshi Fujita , Fusato Kitano , Yoshihiro Hosoya , Toru Inazumi , Yuji Yamasaki , Masaya Morita , Yasunobu Nagataki , Kohei Hasegawa , Hiroshi Matsuda , Moriaki Ono
IPC分类号： C22C3840
CPC分类号： C22C38/12 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06
摘要： The present invention relates to a very low C—Nb cold rolled steel sheet giving 340 to 440 MPa of tensile strength. For example, the cold rolled steel sheet consists essentially of 0.0040 to 0.01% C, not more than 0.05% Si, 0.1 to 1.0% Mn, 0.01 to 0.05% P, not more than 0.02% S, 0.01 to 0.1% sol.Al, not more than 0.004% N, 0.01 to 0.14% Nb, by weight, and balance of substantially Fe and inevitable impurities, and has not less than 0.21 of n value calculated from two points (1% and 10%) of nominal strain determined by the uniaxial tensile test, and relates to a method for manufacturing the cold rolled steel sheet. The present invention provides a high strength cold rolled steel sheet for automobile exterior panels having excellent combined formability, resistance to embrittlement during secondary operation, formability at welded portions, anti-burring performance, good surface appearance, and uniformity of material in a coil.

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。

6. 发明授权

US06869691B2 High strength hot-dip galvanized steel sheet and method for manufacturing the same 有权
标题翻译：高强度热浸镀锌钢板及其制造方法
公开(公告)号：US06869691B2
公开(公告)日：2005-03-22
申请号：US10273052
申请日：2002-10-17
申请人： Yasunobu Nagataki , Fusato Kitano , Kentaro Sato , Masahiro Iwabuchi , Akira Gamou
发明人： Yasunobu Nagataki , Fusato Kitano , Kentaro Sato , Masahiro Iwabuchi , Akira Gamou
IPC分类号： C21D9/46 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/26 , C22C38/38 , C23C2/02 , C23C2/06 , C23C2/40 , B32B15/00 , C21D8/00
CPC分类号： C22C38/02 , C21D8/0205 , C21D8/0278 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/26 , C22C38/38 , C23C2/02 , C23C2/06 , C23C2/40 , Y10T428/12799
摘要： The invention relates to a high strength hot-dip galvanized steel sheet consisting essentially of 0.03 to 0.25% C, 0.7% or less Si, 1.4 to 3.5% Mn, 0.05% or less P, 0.01% or less S, 0.05 to 1% Cr, 0.005 to 0.1% Nb, by mass, and balance of Fe, and being made of a composite structure of ferrite and secondary phase, and having an average grain size of the composite structure of 10 μm or smaller. Since the high strength hot-dip galvanized steel sheet of the present invention hardly induces softening at HAZ during welding, it is applicable to structural members of automobiles for “Tailor Welded Blanks” (TWB).
摘要翻译：本发明涉及基本上由0.03-0.25％C，0.7％或更少的Si，1.4到3.5％的Mn，0.05％或更少的P，0.01％或更少的S，0.05到1％ Cr，0.005〜0.1％Nb，余量为Fe，由铁素体和二次相的复合结构构成，复合结构的平均粒径为10μm以下。由于本发明的高强度热浸镀锌钢板在焊接时在HAZ几乎不发生软化，因此适用于“裁缝焊接坯料”（TWB）的汽车结构件。

7. 发明授权

US5542996A Method for manufacturing an ultra-high strength cold-rolled steel sheet with desirable delayed fracture resistance 失效
$Method for manufacturing an ultra-high strength cold-rolled steel sheet with desirable delayed fracture resistance$
标题翻译：制造具有期望的耐断裂性的超高强度冷轧钢板的方法
公开(公告)号：US5542996A
公开(公告)日：1996-08-06
申请号：US199254
申请日：1994-03-04
申请人： Yasunobu Nagataki , Seishi Tsuyama , Yoshihiro Hosoya , Tomoyoshi Okita , Shuzi Kanetoh , Yasuyuki Takada
发明人： Yasunobu Nagataki , Seishi Tsuyama , Yoshihiro Hosoya , Tomoyoshi Okita , Shuzi Kanetoh , Yasuyuki Takada
IPC分类号： C22C38/04 , C22C38/06 , C21D9/46 , C22C38/58
CPC分类号： C22C38/06 , C22C38/04
摘要： A method for manufacturing an ultra-high-strength cold-rolled steel sheet having desirable delayed fracture resistance, which comprises: preparing a material consisting essentially of 0.1 to 0.25 wt. % carbon, up to 1 wt. % silicon, 1 to 2.5 wt. % manganese, up to 0.020 wt. % phosphorus, up to 0.005 wt. % sulfur, 0.01 to 0.05 wt. % soluble aluminum, 0.0010 to 0.0050 wt. % nitrogen, optionally at least one of Nb, Ti or V, optionally at least one of Cu, Ni, B, Cr or Mo, the balance being iron and incidental impurities; subjecting the material to a hot rolling, a pickling and a cold rolling to prepare a cold-rolled steel sheet; and subjecting the cold-rolled steel sheet to a continuous heat treatment which comprises: subjecting the cold-rolled steel sheet to a soaking treatment at a temperature of Ac.sub.3 to 900.degree. C. for 30 seconds to 15 minutes, quenching the cold-rolled steel sheet at a quenching rate of at least 400.degree. C./second from a temperature of at least a lower limit temperature (T.sub.Q) for starting quenching as expressed by the following formula to a temperature of up to 100.degree. C.: T.sub.Q (.degree.C.)=600+800.times.C+(20.times.Si+12.times.Mo+13.times.Cr)-(30.times.Mn+8.times.Cu+7.times.Ni+5000.times.B), wherein C, Si, Mo, Cr, Mn, Cu, Ni and B are respectively weight percents for carbon, silicon, molybdenum, chromium, manganese, copper, nitrogen and boron, and tempering the cold-rolled steel sheet at a temperature of 100.degree. C. to 300.degree. C. for 1 to 15 minutes.
摘要翻译： PCT No.PCT / JP94 / 00038 Sec。 371日期1994年3月4日 102（e）1994年3月4日PCT 1994年1月13日PCT PCT。出版物WO94 / 16115 日期1994年7月21日制造具有期望的耐断裂性的超高强度冷轧钢板的方法，其包括：制备基本上由0.1〜0.25重量％％碳，至多1重量％％硅，1〜2.5wt。％锰，至多0.020重量％％磷，至多0.005重量％％硫，0.01〜0.05wt。％可溶性铝，0.0010〜0.0050重量％％氮，任选至少一种Nb，Ti或V，任选至少一种Cu，Ni，B，Cr或Mo，余量为铁和杂质; 对该材料进行热轧，酸洗和冷轧以制备冷轧钢板; 对该冷轧钢板进行连续热处理，其特征在于，将所述冷轧钢板在Ac3〜900℃的温度下均热处理30秒〜15分钟，冷却所述冷轧钢板从至少下限温度（TQ）至少下降温度（TQ）至少为400℃/秒的淬火速度，如下式所示，温度高达100℃：TQ（DEG （30xMn + 8xCu + 7xNi + 5000xB），其中C，Si，Mo，Cr，Mn，Cu，Ni和B分别为碳，硅，钼，铬，锰，铜，氮和硼，并在100℃至300℃的温度下回火冷轧钢板1至15分钟。

8. 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。

9. 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。

10. 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

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