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1. 发明授权

US07396420B2 Hot-dip galvanized hot-rolled and cold-rolled steel sheets excellent in strain age hardening property 有权
标题翻译：热浸镀锌热轧和冷轧钢板，应变时效硬化性优异
公开(公告)号：US07396420B2
公开(公告)日：2008-07-08
申请号：US10429018
申请日：2003-05-02
申请人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
发明人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
IPC分类号： C22C38/12
CPC分类号： C22C38/16 , C21D1/185 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D8/0278 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C23C2/02 , C23C2/06 , C23C2/40 , Y10T428/12799
摘要： The present invention provides a steel sheet having a chemical composition comprising 0.15% or less C, 2.0% or less Si, 3.0% or less Mn, P, S, A1 and N in adjusted amounts, from 0.5 to 3.0% Cu, or one or more of Cr, Mo and W in a total amount of 2.0% or less, and having a composite structure comprising ferrite and martensite having an area ratio of 2% or more. The steel sheet is in the form of a high-strength hot-rolled steel sheet, a high-strength cold-rolled steel sheet, or a hot-dip galvanized steel sheet. There is thus available a steel sheet excellent in press-formability and in strain age hardening property as represented by a ΔTS of 80 MPa or more.
摘要翻译：本发明提供一种钢板，其特征在于，具有C：0.15％以下的Si，2.0％以下的Si，3.0％以下的Mn，P，S，Al，N，Cu：0.5〜3.0％或更多的Cr，Mo和W的总量为2.0％以下，并且具有包含面积比为2％以上的铁素体和马氏体的复合结构。钢板为高强度热轧钢板，高强度冷轧钢板或热浸镀锌钢板的形式。因此可获得如DeltaTS为80MPa以上的压制成形性和应变时效硬化性优异的钢板。

2. 发明授权

US06818074B2 High-ductility steel sheet excellent in press formability and strain age hardenability, and method for manufacturing the same 失效
标题翻译：压制成形性和应变时效淬透性优异的高延展性钢板及其制造方法
公开(公告)号：US06818074B2
公开(公告)日：2004-11-16
申请号：US10163728
申请日：2002-06-06
申请人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
发明人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
IPC分类号： C22C3802
CPC分类号： C22C38/02 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D8/0278 , C22C38/04 , C22C38/12 , C22C38/16 , C23C2/02 , C23C2/28 , Y10T428/12799
摘要： A steel sheet composition contains appropriate amounts of C, Si, Mn, P, S, Al and N and 0.5 to 3.0% Cu. A composite structure of the steel sheet has a ferrite phase or a ferrite phase and a tempered martensite phase as a primary phase, and a secondary phase containing retained austenite in a volume ratio of not less than 1%. In place of the Cu, at least one of Mo, Cr, and W may be contained in a total amount of not more than 2.0%. This composition is useful in production of a high-ductility hot-rolled steel sheet, a high-ductility cold-rolled steel sheet and a high-ductility hot-dip galvanized steel sheet having excellent press formability and excellent stain age hardenability as represented by a &Dgr;TS of not less than 80 MPa, in which the tensile strength increases remarkably through a heat treatment at a relatively low temperature after press forming.
摘要翻译：钢板组合物含有适量的C，Si，Mn，P，S，Al和N以及0.5〜3.0％的Cu。钢板的复合结构具有铁素体相或铁素体相，回火马氏体相作为主相，第二相含有体积比为1％以上的残留奥氏体。代替Cu，Mo，Cr和W中的至少一种可以含有不超过2.0％的总量。该组合物可用于生产高延展性热轧钢板，高延展性冷轧钢板和高延展性热浸镀锌钢板，其具有优异的压制成形性和优异的耐老化淬透性，如通过压制成形后的较低温度下的热处理，拉伸强度不大于80MPa的ΔTS值。

3. 发明申请

US20050019601A1 High-ductility steel sheet excellent in press formability and strain age hardenability, and method for manufacturing the same 审中-公开
标题翻译：压制成形性和应变时效淬透性优异的高延展性钢板及其制造方法
公开(公告)号：US20050019601A1
公开(公告)日：2005-01-27
申请号：US10909049
申请日：2004-07-30
申请人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
发明人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
IPC分类号： C22C38/00 , C21D8/02 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/16 , C23C2/02 , C23C2/28 , B32B15/00
CPC分类号： C22C38/02 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D8/0278 , C22C38/04 , C22C38/12 , C22C38/16 , C23C2/02 , C23C2/28 , Y10T428/12799
摘要： A steel sheet composition contains appropriate amounts of C, Si, Mn, P, S, Al and N and 0.5 to 3.0% Cu. A composite structure of the steel sheet has a ferrite phase or a ferrite phase and a tempered martensite phase as a primary phase, and a secondary phase containing retained austenite in a volume ratio of not less than 1%. In place of the Cu, at least one of Mo, Cr, and W may be contained in a total amount of not more than 2.0%. This composition is useful in production of a high-ductility hot-rolled steel sheet, a high-ductility cold-rolled steel sheet and a high-ductility hot-dip galvanized steel sheet having excellent press formability and excellent stain age hardenability as represented by a ΔTS of not less than 80 MPa, in which the tensile strength increases remarkably through a heat treatment at a relatively low temperature after press forming.
摘要翻译：钢板组合物含有适量的C，Si，Mn，P，S，Al和N以及0.5〜3.0％的Cu。钢板的复合结构具有铁素体相或铁素体相，回火马氏体相作为主相，第二相含有体积比为1％以上的残留奥氏体。代替Cu，Mo，Cr和W中的至少一种可以含有不超过2.0％的总量。该组合物可用于生产高延展性热轧钢板，高延展性冷轧钢板和高延展性热浸镀锌钢板，其具有优异的压制成形性和优异的耐老化淬透性，如通过压制成形后的较低温度下的热处理，拉伸强度不大于80MPa的ΔTS值。

4. 发明申请

US20050016644A1 High-ductility steel sheet excellent in press formability and strain age hardenability, and method for manufacturing the same 审中-公开
公开(公告)号：US20050016644A1
公开(公告)日：2005-01-27
申请号：US10903747
申请日：2004-07-30
申请人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
发明人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
IPC分类号： C22C38/00 , C21D8/02 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/16 , C23C2/02 , C23C2/28 , C21D8/00
CPC分类号： C22C38/02 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D8/0278 , C22C38/04 , C22C38/12 , C22C38/16 , C23C2/02 , C23C2/28 , Y10T428/12799
摘要： A steel sheet composition contains appropriate amounts of C, Si, Mn, P, S, Al and N and 0.5 to 3.0% Cu. A composite structure of the steel sheet has a ferrite phase or a ferrite phase and a tempered martensite phase as a primary phase, and a secondary phase containing retained austenite in a volume ratio of not less than 1%. In place of the Cu, at least one of Mo, Cr, and W may be contained in a total amount of not more than 2.0%. This composition is useful in production of a high-ductility hot-rolled steel sheet, a high-ductility cold-rolled steel sheet and a high-ductility hot-dip galvanized steel sheet having excellent press formability and excellent stain age hardenability as represented by a ΔTS of not less than 80 MPa, in which the tensile strength increases remarkably through a heat treatment at a relatively low temperature after press forming.

5. 发明授权

US06814819B2 Methods of manufacturing hot-dip galvanized hot-rolled and cold-rolled steel sheets excellent in strain age hardening property 有权
标题翻译：制造应变时效硬化性优异的热镀锌热轧和冷轧钢板的制造方法
公开(公告)号：US06814819B2
公开(公告)日：2004-11-09
申请号：US10428881
申请日：2003-05-02
申请人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
发明人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
IPC分类号： C21D802
CPC分类号： C22C38/16 , C21D1/185 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D8/0278 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C23C2/02 , C23C2/06 , C23C2/40 , Y10T428/12799
摘要： The present invention provides a steel sheet having a chemical composition comprising 0.15% or less C, 2.0% or less Si, 3.0% or less Mn, P, S, Al and N in adjusted amounts, from 0.5 to 3.0% Cu, or one or more of Cr, Mo and W in a total amount of 2.0% or less, and having a composite structure comprising ferrite and martensite having an area ratio of 2% or more. The steel sheet is in the form of a high-strength hot-rolled steel sheet, a high-strength cold-rolled steel sheet, or a hot-dip galvanized steel sheet. There is thus available a steel sheet excellent in press-formability and in strain age hardening property as represented by a &Dgr;TS of 80 MPa or more.
摘要翻译：本发明提供一种钢板，其特征在于，含有0.15％以下的C，2.0％以下的Si，3.0％以下的Mn，P，S，Al，N以及0.5〜3.0％的Cu，或更多的Cr，Mo和W的总量为2.0％以下，并且具有包含面积比为2％以上的铁素体和马氏体的复合结构。钢板为高强度热轧钢板，高强度冷轧钢板或热浸镀锌钢板的形式。因此可获得如DeltaTS为80MPa以上的压制成形性和应变时效硬化性优异的钢板。

6. 发明授权

US06676774B2 Hot rolled steel plate and cold rolled steel plate being excellent in strain aging hardening characteristics 有权
标题翻译：热轧钢板和冷轧钢板的应变时效硬化特性优异
公开(公告)号：US06676774B2
公开(公告)日：2004-01-13
申请号：US09980300
申请日：2001-12-31
申请人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
发明人： Saiji Matsuoka , Tetsuo Shimizu , Kei Sakata , Osamu Furukimi
IPC分类号： C22C3816
CPC分类号： C22C38/16 , C21D1/185 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D8/0278 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C23C2/02 , C23C2/06 , C23C2/40 , Y10T428/12799
摘要： The present invention provides a steel sheet having a chemical composition comprising 0.15% or less C, 2.0% or less Si, 3.0% or less Mn, P, S, Al and N in adjusted amounts, from 0.5 to 3.0% Cu, or one or more of Cr, Mo and W in a total amount of 2.0% or less, and having a composite structure comprising ferrite and martensite having an area ratio of 2% or more. The steel sheet is in the form of a high-strength hot-rolled steel sheet, a high-strength cold-rolled steel sheet, or a hot-dip galvanized steel sheet. There is thus available a steel sheet excellent in press-formability and in strain age hardening property as represented by a &Dgr;TS of 80 MPa or more.
摘要翻译：本发明提供一种钢板，其特征在于，含有0.15％以下的C，2.0％以下的Si，3.0％以下的Mn，P，S，Al，N以及0.5〜3.0％的Cu，或更多的Cr，Mo和W的总量为2.0％以下，并且具有包含面积比为2％以上的铁素体和马氏体的复合结构。钢板为高强度热轧钢板，高强度冷轧钢板或热浸镀锌钢板的形式。因此可获得如DeltaTS为80MPa以上的压制成形性和应变时效硬化性优异的钢板。

7. 发明授权

US5360493A High-strength cold-rolled steel sheet excelling in deep drawability and method of producing the same 失效
标题翻译：高强度冷拉伸性能优良的低强度冷轧钢板及其制造方法
公开(公告)号：US5360493A
公开(公告)日：1994-11-01
申请号：US72725
申请日：1993-06-07
申请人： Saiji Matsuoka , Hidetaka Kawabe , Eiko Yasuhara , Kei Sakata , Toshiyuki Kato
发明人： Saiji Matsuoka , Hidetaka Kawabe , Eiko Yasuhara , Kei Sakata , Toshiyuki Kato
IPC分类号： C21D8/04 , C22C38/12 , C22C38/06
CPC分类号： C21D8/0426 , C22C38/12 , C21D8/0405 , C21D8/0436 , C21D8/0463 , C21D8/0473
摘要： In a method of producing a high-strength cold-rolled steel sheet excelling in deep drawability, a steel material is used which consists of: a basic composition including 0.01% or less of C, 0.1 to 2.0% of Si, 0.5 to 3.0% of Mn, 0.02 to 0.2% of P, 0.05% or less of S, 0.03 to 0.2% of Al, 0.01% or less of N, 0.001 to 0.2% of Nb, and 0.0001 to 0.008% of B in such a way that the respective contents of C, Nb, Al, N, Si, Mn and P satisfy the following formulae:5.ltoreq.Nb/C.ltoreq.30, 10.ltoreq.Al/N.ltoreq.80, and 16.ltoreq.(3.times.Si/28+200 .times.P/31)/(Mn/55).ltoreq.40; Fe remnant; and inevitable impurities, the method including the steps of:performing rolling on the steel material with a total reduction of 50% or more and 95% or less while effecting lubrication thereon in a temperature range of not higher than the Ar.sub.3 transformation temperature and not lower than 500.degree. C.;performing a hot-rolled sheet recrystallization treatment on the steel material by a coiling or annealing process;performing cold rolling on the steel material with a reduction of 50 to 95%; and theneffecting recrystallization annealing on the steel material in a temperature range of 700 .degree. to 950.degree. C.
摘要翻译：在制造深冲性优异的高强度冷轧钢板的方法中，使用由以下组成的钢材，所述钢材由以下组成：含有0.01％以下的C，0.1〜2.0％的Si，0.5〜3.0％的Mn，0.02〜0.2％的P，0.05％以下的S，0.03〜0.2％的Al，0.01％以下的N，0.001〜0.2％的Nb和0.0001〜0.008％的B， C，Nb，Al，N，Si，Mn和P的各自的含量满足下式：5≤Nb/C≤30,10≤Al/N≤80， =（3×Si / 28 + 200×P / 31）/（Mn / 55）≤40; 铁残和不可避免的杂质，所述方法包括以下步骤：在不高于Ar 3转变温度的温度范围内对钢材进行总压下率为50％以上且95％以下的润滑而不降低 500℃以上。通过卷取或退火处理对钢材进行热轧板再结晶处理; 对钢材进行冷轧，减少50〜95％; 然后在700〜950℃的温度范围内对钢材进行再结晶退火。

8. 发明授权

US06537394B1 Method for producing hot-dip galvanized steel sheet having high strength and also being excellent in formability and galvanizing property 有权
标题翻译：具有高强度并且成型性和镀锌性优异的热浸镀锌钢板的制造方法
公开(公告)号：US06537394B1
公开(公告)日：2003-03-25
申请号：US09868674
申请日：2001-06-21
申请人： Kazunori Osawa , Kei Sakata , Osamu Furukimi , Yoshitsugu Suzuki , Akio Shinohara
发明人： Kazunori Osawa , Kei Sakata , Osamu Furukimi , Yoshitsugu Suzuki , Akio Shinohara
IPC分类号： C12D800
CPC分类号： C23C2/02 , C21D8/0226 , C21D8/0273 , C21D8/0278 , C21D8/0478 , C21D2211/005 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C23C2/28
摘要： A hot-dip galvanized high-strength steel sheet having superior workability and galvanizability containing: 0.01% to 0.20% by weight of C; 1.0% by weight or less of Si; more than 1.5% to 3.0% by weight of Mn; 0.10% by weight or less of P; 0.05% by weight or less of S; 0.10% by weight or less of Al; 0.010% by weight or less of N; 0.010% to 1.0% by weight in total of at least one element selected from the group consisting of Ti, Nb, and V; and the balance being Fe and incidental impurities; in which the steel sheet has the metal structure in which the areal rate of the ferrite phase is 50% or more, the ferrite phase has an average grain diameter of 10 &mgr;m or less, and the thickness of a band-like structure composed of the second phase satisfies the relationship Tb/T≦0.005, where Tb is the average thickness in the sheet thickness direction of the band-like structure and T is the thickness of the steel sheet, and a method for producing the same. To provide a method for producing a hot-dip galvanized high-strength steel sheet in which superior workability and high strength are obtained and moreover satisfactory galvanizability is obtained when galvanizing is performed using facilities such as a continuous galvanizing line.
摘要翻译：一种具有优异的加工性和镀层性的热浸镀锌高强度钢板，其含有：0.01〜0.20重量％的C，1.0重量％以下的Si，1.5重量％〜3.0重量％的Mn，0.10重量％以下的P：0.05重量％以下，S：0.10重量％以下，Al：0.010重量％以下，N：0.010重量％以下，0.010〜1.0重量％由Ti，Nb和V组成的组; 余量为Fe和杂质;其中钢板具有铁素体相的面积率为50％以上的金属结构，铁素体相的平均粒径为10μm以下，厚度为由第二相组成的带状结构满足Tb / T <0.005的关系，其中Tb是带状结构的板厚方向上的平均厚度，T是钢板的厚度，为了生产相同。为了提供一种能够获得优异的加工性和高强度的热镀锌高强度钢板的制造方法，并且当使用诸如连续镀锌线的设备进行镀锌时，获得了令人满意的镀锌性。

9. 发明授权

US07252724B2 High tensile hot-rolled steel sheet having excellent strain aging hardening properties and method for producing the same 有权
标题翻译：具有优异的应变时效硬化性能的高强度热轧钢板及其制造方法
公开(公告)号：US07252724B2
公开(公告)日：2007-08-07
申请号：US10643227
申请日：2003-08-18
申请人： Akio Tosaka , Sinjiro Kaneko , Yoichi Tominaga , Noriyuki Katayama , Nobutaka Kurosawa , Kei Sakata , Osamu Furukimi
发明人： Akio Tosaka , Sinjiro Kaneko , Yoichi Tominaga , Noriyuki Katayama , Nobutaka Kurosawa , Kei Sakata , Osamu Furukimi
IPC分类号： C21D8/02
CPC分类号： C21D8/0226 , C21D8/0236 , C21D2221/02 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12
摘要： A high tensile strength hot-rolled steel sheet having superior strain aging hardenability, which has high formability and stable quality characteristics, and in which satisfactory strength is obtained when the steel sheet is formed into automotive components, thus enabling the reduction in weight of automobile bodies is provided. Specifically, a method for producing a high tensile strength hot-rolled steel sheet having superior strain aging hardenability with a BH of 80 MPa or more, a ΔTS of 40 MPa or more, and a tensile strength of 440 MPa or more includes the steps of heating a steel slab to 1,000° C. or more, the steel slab containing, in percent by mass 0.15% or less of C, 2.0% or less of Si, 3.0% or less of Mn, 0.08% or less of P, 0.02% or less of S, 0.02% or less of Al, 0.0050% to 0.0250% of N, and optionally 0.1% or less in total of at least one of more than 0.02% to 0.1% of Nb and more than 0.02% to 0.1% of V, the ratio N (mass %)/Al (mass %) being 0.3 or more, rough-rolling the steel slab to form a sheet bar; finish-rolling the sheet bar at a finishing temperature of 800° C. or more; cooling at a cooling rate of 20° C. to 40° C./s or more within 0.5 second after the finish-rolling; and coiling at a temperature of 650° C. to 450° C. or less.
摘要翻译：具有优异的应变时效淬透性的高拉伸强度热轧钢板，其成形性高，质量特性稳定，当将钢板形成汽车部件时，能够获得令人满意的强度，能够减轻汽车车身的重量被提供。具体而言，制造具有优异的应变时效淬透性，BH为80MPa以上，ΔTS为40MPa以上，拉伸强度为440MPa以上的高强度热轧钢板的制造方法，其特征在于，将钢坯加热至1000℃以上时，含有以质量％计含有0.15％以下的Si，2.0％以下的Si，3.0％以下的Mn，0.08％以下的P，0.02 S％以下，Al：0.02％以下，N：0.0050〜0.0250％，Nb：0.02〜0.1％，Nb：0.02〜0.1％ V的百分比，N（质量％）/ Al（质量％）的比例为0.3以上，对钢坯进行粗轧以形成板坯; 在800℃或更高的终轧温度下对板材进行精轧; 在精轧后的0.5秒内以20℃至40℃/秒的冷却速度冷却; 并在650℃至450℃或更低的温度下卷取。

10. 发明授权

US06692584B2 High tensile cold-rolled steel sheet excellent in ductility and in strain aging hardening properties, and method for producing the same 有权
标题翻译：延展性和应变时效硬化性优异的高强度冷轧钢板及其制造方法
公开(公告)号：US06692584B2
公开(公告)日：2004-02-17
申请号：US10009957
申请日：2001-12-12
申请人： Kei Sakata , Akio Tosaka , Osamu Furukimi
发明人： Kei Sakata , Akio Tosaka , Osamu Furukimi
IPC分类号： C22C3806
CPC分类号： C22C38/001 , C21D8/0236 , C21D8/0273 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C22C38/02 , C22C38/04
摘要： The present invention provides a high tensile cold-rolled steel sheet having superior ductility, strain age-hardening characteristics, and crash resistance properties, and also provides a manufacturing method therefor. As a particular means, a thin cold-rolled steel sheet containing 0.05% to 0.30% of C, 0.4% to 2.0% of Si, 0.7% to 3.0% of Mn, 0.08% or less of P, 0.02% or less of Al, and 0.0050% to 0.0250% of N on a mass % basis is manufactured in which N/Al is 0.3 or more. This thin cold-rolled steel sheet is heated to a temperature between (an Ac1 transformation point) and (an Ac3 transformation point+50° C.), is cooled at a cooling rate of 5 to 150° C./second in the range of at least 600 to 500° C., and is held in the temperature range of 350 to 500° C. This steel sheet has superior ductility, strain age-hardening characteristics having a &Dgr;TS of 50 MPa or more, and crash resistance properties.
摘要翻译：本发明提供一种具有优异的延展性，应变时效硬化特性和抗冲击性能的高拉伸冷轧钢板，并且还提供其制造方法。作为具体的方法，可以使用含有C：0.05〜0.30％，Si：0.4〜2.0％，Mn：0.7〜3.0％，P：0.08％以下，Al：0.02％以下的薄型冷轧钢板，制造N / Al为0.3以上的基于质量％的0.0050〜0.0250％的N。将该薄型冷轧钢板加热至（Ac1相变点）和（Ac3相变点+ 50℃）之间的温度，以5〜150℃/秒的冷却速度为至少600〜500℃，保持在350〜500℃的温度范围。该钢板具有优异的延展性，ΔTS为50MPa以上的应变时效硬化特性，耐冲击性。

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