公开(公告)号：US20110120600A1

公开(公告)日：2011-05-26

申请号：US13054971

申请日：2009-07-22

申请人： Taro Kizu ,  Koichiro Fujita ,  Eiko Yasuhara ,  Kazuhiro Hanazawa ,  Masatoshi Kumagai ,  Kenji Tahara ,  Hideharu Koga

发明人： Taro Kizu ,  Koichiro Fujita ,  Eiko Yasuhara ,  Kazuhiro Hanazawa ,  Masatoshi Kumagai ,  Kenji Tahara ,  Hideharu Koga

IPC分类号： C21D8/02 ,  C22C38/00

CPC分类号： C22C38/004 ,  C21D1/26 ,  C21D8/0426 ,  C21D8/0436 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

摘要： A cold-rolled steel sheet includes, on a percent by mass basis: C: 0.0010% to 0.0030%, Si: 0.05% or less, Mn: 0.1% to 0.3%, P: 0.05% or less, S: 0.02% or less, Al: 0.02% to 0.10%, N: 0.005% or less, and Nb: 0.010% to 0.030% and the remainder composed of Fe and incidental impurities, wherein r values in a rolling direction and a direction perpendicular to the rolling direction are within a range of 1.0 to 1.6, and a mean value Elm of elongations in the rolling direction, a direction at 45° with respect to the rolling direction, and the direction perpendicular to the rolling direction is 40% or more, where Elm=(ElL+2×ElD+ElC)/4 ElL: elongation in the rolling direction, ElD: elongation in the direction at 45° with respect to the rolling direction, and ElC: elongation in the direction perpendicular to the rolling direction.

摘要翻译： 冷轧钢板以质量％计含有：C：0.0010〜0.0030％，Si：0.05％以下，Mn：0.1〜0.3％，P：0.05％以下，S：0.02％以下 Al：0.02〜0.10％，N：0.005％以下，Nb：0.010％〜0.030％，余量由Fe和杂质构成，其中r值在轧制方向和垂直于轧制方向的方向 在1.0〜1.6的范围内，轧制方向的延伸率的平均值Elm，相对于轧制方向为45°的方向以及与轧制方向垂直的方向为40％以上，其中，Elm = （ElL + 2×ElD + ElC）/ 4 ElL：轧制方向的伸长率，ElD：相对于轧制方向在45°的方向的伸长率，以及ElC：与轧制方向垂直的方向的伸长率。

公开(公告)号：US08449699B2

公开(公告)日：2013-05-28

申请号：US13054971

申请日：2009-07-22

申请人： Taro Kizu ,  Koichiro Fujita ,  Eiko Yasuhara ,  Kazuhiro Hanazawa ,  Masatoshi Kumagai ,  Kenji Tahara ,  Hideharu Koga

发明人： Taro Kizu ,  Koichiro Fujita ,  Eiko Yasuhara ,  Kazuhiro Hanazawa ,  Masatoshi Kumagai ,  Kenji Tahara ,  Hideharu Koga

IPC分类号： C22C38/00 ,  C21D8/00

CPC分类号： C22C38/004 ,  C21D1/26 ,  C21D8/0426 ,  C21D8/0436 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

摘要： A cold-rolled steel sheet includes, on a percent by mass basis: C: 0.0010% to 0.0030%, Si: 0.05% or less, Mn: 0.1% to 0.3%, P: 0.05% or less, S: 0.02% or less, Al: 0.02% to 0.10%, N: 0.005% or less, and Nb: 0.010% to 0.030% and the remainder composed of Fe and incidental impurities, wherein values in a rolling direction and a direction perpendicular to the rolling direction are within a range of 1.0 to 1.6, and a mean value Elm of elongations in the rolling direction, a direction at 45° with respect to the rolling direction, and the direction perpendicular to the rolling direction is 40% or more, where Elm=(ElL+2×ElD+ElC)/4 and ElL: elongation in the rolling direction, ElD: elongation in the direction at 45° with respect to the rolling direction, and ElC: elongation in the direction perpendicular to the rolling direction.

摘要翻译： 冷轧钢板以质量％计含有：C：0.0010〜0.0030％，Si：0.05％以下，Mn：0.1〜0.3％，P：0.05％以下，S：0.02％以下 Al：0.02〜0.10％，N：0.005％以下，Nb：0.010％〜0.030％，余量由Fe和杂质组成，其中轧制方向和垂直于轧制方向的方向为 在1.0〜1.6的范围内，轧制方向的伸长率，相对于轧制方向为45°的方向和与轧制方向垂直的方向的平均值Elm为40％以上，其中，Elm =（ ElL + 2×ElD + ElC）/ 4和ElL：轧制方向的伸长率，ElD：相对于轧制方向在45°的方向的伸长率，以及ElC：与轧制方向垂直的方向的伸长率。

公开(公告)号：US20110318217A1

公开(公告)日：2011-12-29

申请号：US13254050

申请日：2010-02-19

申请人： Koichiro Fujita ,  Kazuhiro Hanazawa ,  Eiko Yasuhara

发明人： Koichiro Fujita ,  Kazuhiro Hanazawa ,  Eiko Yasuhara

IPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C21D8/02

CPC分类号： C21D9/46 ,  C21D8/0236 ,  C21D8/0426 ,  C21D8/0436 ,  C21D9/48 ,  C21D2211/003 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： A cold-rolled steel sheet with excellent bending workability has a component composition of 0.025% or less C, 0.1% or less Si, 0.05% to 0.5% Mn, 0.03% or less P, 0.02% or less S, and 0.01% to 0.1% sol. Al on a mass basis, the remainder being Fe and unavoidable impurities; a microstructure that is a ferrite rolling texture; a tensile strength TS of 390 MPa or more; a thickness of 0.4 mm or more; and a sheet thickness direction ultimate ductility of 1.3 or more, wherein the sheet thickness direction ultimate ductility is the natural logarithm Ln(t0/t1) of the ratio of the thickness t0 of an untested steel sheet to the thickness t1 of the fracture surface of the tested steel sheet as determined by a tensile test.

摘要翻译： 具有优异的弯曲加工性的冷轧钢板的组成成分为C：0.025％以下，Si：0.1％以下，Mn：0.05〜0.5％，P：0.03％以下，P：0.02％以下，S：0.01％ 0.1％溶胶 Al，其余为Fe和不可避免的杂质; 铁素体滚动纹理的微结构; 拉伸强度TS为390MPa以上; 厚度为0.4mm以上; 并且板厚方向极限延展性为1.3以上，其中，板厚方向极限延展性是未测试钢板的厚度t0与断裂面的厚度t1之比的自然对数Ln（t0 / t1） 通过拉伸试验测定的钢板。

公开(公告)号：US20100221600A1

公开(公告)日：2010-09-02

申请号：US12086988

申请日：2007-01-05

申请人： Eiko Yasuhara ,  Nobuko Nakagawa ,  Reiko Sugihara ,  Tadashi Inoue

发明人： Eiko Yasuhara ,  Nobuko Nakagawa ,  Reiko Sugihara ,  Tadashi Inoue

IPC分类号： H01M2/02 ,  C21D8/02 ,  C22C38/00

CPC分类号： C21D9/46 ,  C21D8/0205 ,  C21D2211/005 ,  C22C38/004 ,  C22C38/04 ,  C22C38/18 ,  C22C38/38 ,  C23C2/02 ,  H01M2/0257 ,  H01M2/0285 ,  Y10T29/49108

摘要： A cold-rolled steel sheet having superior non-ageing properties and low planar anisotropy can be produced at low cost without decreased productivity. This cold-rolled steel sheet contains, by mass, 0.010% to 0.040% carbon, 0.02% or less silicon, 1.0% to 2.5% manganese, 0.02% or less phosphorus, 0.015% or less sulfur, 0.004% or less nitrogen, and 0.020% to 0.070% aluminum, the balance being iron and incidental impurities. The steel sheet has a microstructure including a ferrite phase and a second phase. The volume percentage of the second phase is 0.2% to less than 10%. The steel sheet has an AI of 50 MPa or less, −0.20≦Δr≦0.20, and a thickness of 0.5 mm or less.

摘要翻译： 可以低成本地制造具有优异的非时效性和低平面各向异性的冷轧钢板，而不降低生产率。 该冷轧钢板以质量计含有0.010〜0.040％的碳，0.02％以下的硅，1.0〜2.5％的锰，0.02％以下的磷，0.015％以下的硫，0.004％以下的氮，以及 0.020％至0.070％的铝，余量为铁和杂质。 钢板具有包括铁素体相和第二相的微结构。 第二相的体积百分比为0.2％至小于10％。 钢板的AI为50MPa以下，-0.20＆lt; lE;＆Dgr; r＆nlE; 0.20，厚度为0.5mm以下。

公开(公告)号：US4859297A

公开(公告)日：1989-08-22

申请号：US279416

申请日：1988-12-02

申请人： Kanji I ,  Tatsuo Kawasaki ,  Eiko Yasuhara

发明人： Kanji I ,  Tatsuo Kawasaki ,  Eiko Yasuhara

IPC分类号： C25F1/06

CPC分类号： C25F1/06

摘要： A cold-rolled and annealed stainless steel strip is completely descaled in a short process period by electrolizing the strip with an aqueous solution containing ranges ofx (g/l)=50 to 270 (1)y (g/l)=(-0.01 x+3.8) to (-0.05x+21) (2),where x is concentration of nitric anid in g/l and y is concentration of chlorine in g/l.

公开(公告)号：US08097205B2

公开(公告)日：2012-01-17

申请号：US12521007

申请日：2008-02-14

申请人： Takahiro Sugano ,  Eiko Yasuhara ,  Takashi Yamauchi

发明人： Takahiro Sugano ,  Eiko Yasuhara ,  Takashi Yamauchi

IPC分类号： C21D9/573

CPC分类号： C21D9/56 ,  C21D1/42 ,  C21D8/02 ,  C21D9/573 ,  C21D9/60 ,  F27D99/0073 ,  F27D2099/0015 ,  Y02P10/253

摘要： Continuous annealing equipment contains: a heating zone, a soaking zone, and a rapid cooling zone, the rapid cooling zone having gas jet cooling equipment and is provided with at least one pair of seal rolls at each of an inlet and an outlet thereof and bridle roll units each composed of two or more bridle rolls in front of and behind itself; the bridle roll unit behind the rapid cooling zone having two or more heating rolls each having an induction heater thereinside; and the heating roll having a winding angle of 100° or more per heating roll and 380° or more in total of all the heating rolls.

摘要翻译： 连续退火设备包括：加热区，均热区和快速冷却区，快速冷却区具有气体喷射冷却设备，并在其每个入口和出口处设置有至少一对密封辊， 卷筒单元，每个由在其自身前面和后面的两个或更多个绷带组成; 快速冷却区后面的绷带单元具有两个或多个加热辊，每个加热辊在其内部具有感应加热器; 加热辊的加热辊的卷绕角度为100°以上，加热辊总共为380°以上。

公开(公告)号：US5460665A

公开(公告)日：1995-10-24

申请号：US321583

申请日：1994-10-11

申请人： Eiko Yasuhara ,  Kei Sakata ,  Susumu Satoh ,  Toshiyuki Kato

发明人： Eiko Yasuhara ,  Kei Sakata ,  Susumu Satoh ,  Toshiyuki Kato

IPC分类号： C21D8/04 ,  C21D8/00

CPC分类号： C21D8/0426 ,  C21D8/0473

摘要： A method of manufacturing a cold rolled steel sheet includes the steps of preparing, as a material, a steel whose composition consists of C: 0.004 wt % or less, Si: 0.10 wt % or less, Mn: 0.50 wt % or less, Ti: between 0.01 wt % and 0.10 wt %, Nb: between 0.003 wt % and 0.03 wt %, B: between 0.001 wt % and 0.004 wt %, Al: between 0.03 wt % and 0.10 wt %, P: 0.025 wt % or less, S: 0.01 wt % or less, N: 0.006 wt % or less; performing a hot rolling on the material steel under the conditions of a finishing temperature between 800.degree. C. and 900.degree. C.; coiling the material at a temperature lower than 650.degree. C.; performing a cold rolling; performing a continuous annealing at a temperature between 830.degree. C. and Ac.sub.3 transformation point; and performing a skin pass rolling.

摘要翻译： 制造冷轧钢板的方法包括以下步骤：制备组成为C：0.004重量％以下，Si：0.10重量％以下，Mn：0.50重量％以下的钢的材料，Ti ：0.01重量％〜0.10重量％，Nb：0.003重量％〜0.03重量％，B：0.001重量％〜0.004重量％，Al：0.03重量％〜0.10重量％，P：0.025重量％以下 ，S：0.01重量％以下，N：0.006重量％以下， 在800〜900℃的终轧温度的条件下对钢材进行热轧。 在低于650℃的温度下卷取材料; 进行冷轧; 在830℃和Ac3转化点之间进行连续退火; 并执行皮肤通过滚动。

公开(公告)号：US06290784B1

公开(公告)日：2001-09-18

申请号：US09427270

申请日：1999-10-26

申请人： Eiko Yasuhara ,  Akio Tosaka ,  Osamu Furukimi

发明人： Eiko Yasuhara ,  Akio Tosaka ,  Osamu Furukimi

IPC分类号： C22C3814

CPC分类号： C22C38/14 ,  B21B1/26 ,  B21B27/106 ,  B21B45/004 ,  C21D8/0226 ,  C22C38/002 ,  C22C38/04

摘要： A hot rolled steel sheet comprises ultrafine ferrite grains as a main phase and fine second phase particles. The ferrite grains have an average grain size of not less than 2 &mgr;m but less than 4 &mgr;m. The second phase has an average particle size of not more than 8 &mgr;m and in not less than 80% of the second phase, the spacing of the second phase particle with the closest second phase particle is not less than the second phase particle size. The steel sheet has an ultrafine grain structure, superior mechanical characteristics, reduced anisotropy in its mechanical characteristics and high formability. A process for producing the steel sheet is also disclosed.

摘要翻译： 热轧钢板包括作为主相的超细铁素体晶粒和微细的第二相粒子。 铁素体晶粒的平均粒径不小于2μm但小于4μm。 第二相的平均粒径不大于8μm，在第二相的80％以上，第二相粒子与最接近的第二相粒子的间隔不小于第二相粒径。 钢板具有超细晶粒结构，机械特性优异，机械特性降低各向异性，成形性高。 还公开了一种钢板的制造方法。

公开(公告)号：US06221179B1

公开(公告)日：2001-04-24

申请号：US09297818

申请日：1999-06-22

申请人： Eiko Yasuhara ,  Masahiko Morita ,  Osamu Furukimi ,  Susumu Okada

发明人： Eiko Yasuhara ,  Masahiko Morita ,  Osamu Furukimi ,  Susumu Okada

IPC分类号： C22C3800

CPC分类号： C21D8/0226 ,  C21D2201/00 ,  C21D2211/005

摘要： A hot rolled steel sheet with improved formability and producing method therefor, which can be easily produced with general hot strip mills, having less anisotropy of mechanical properties and final ferrite grain diameter of less than 2 &mgr;m that could not be achieved by the prior art. The hot rolled steel sheet comprises a ferrite phase as a primary phase, and has an average ferrite grain diameter of less than 2 &mgr;m, with the ferrite grains having an aspect ratio of less than 1.5. The hot rolled steel sheet is obtained by carried out a reduction process under a dynamic recrystallization conditions through reduction passes of not less than 5 stands in the hot finish rolling.

摘要翻译： 一种具有改进成形性的热轧钢板及其制造方法，其可以容易地用通常的热轧带钢轧机制造，其具有较小的机械性能的各向异性和小于2μm的最终铁素体晶粒直径，这是现有技术无法实现的。 热轧钢板以铁素体相为主相，平均铁素体晶粒直径小于2μm，铁素体晶粒的纵横比小于1.5。 热轧钢板是通过在热精轧中通过不少于5台的还原通过在动态再结晶条件下进行还原处理而得到的。

公开(公告)号：US08388770B2

公开(公告)日：2013-03-05

申请号：US12282538

申请日：2007-03-13

申请人： Nobuko Mineji ,  Eiko Yasuhara ,  Reiko Sugihara ,  Tadashi Inoue

发明人： Nobuko Mineji ,  Eiko Yasuhara ,  Reiko Sugihara ,  Tadashi Inoue

IPC分类号： C22C38/00 ,  C22C38/14

CPC分类号： B21B1/22 ,  B21B3/00 ,  C21D8/02 ,  C21D8/04 ,  C21D9/48 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  Y10T29/49108

摘要： A cold-rolled steel sheet has a composition containing, by mass percent, 0.0040% or less of C, 0.02% or less of Si, 0.14% to 0.25% of Mn, 0.020% or less of P, 0.015% or less of S, 0.0040% or less of N, 0.020% to 0.070% of Al, 0.005% to 0.030% of Nb, 0.005% to 0.030% of Ti, (0.0003% to 0.0010% of the equivalent amount of solid solution B (from which the amount of B forming BN has been subtracted)), and the balance composed of Fe and inevitable impurities, wherein even when the rolling reduction of cold rolling is 85% or less, the average grain size of a ferrite structure is reliably 12.0 μm or less, and the relationship −0.20≦Δr≦0.20 can be reliably satisfied and which has an excellent earing property.

摘要翻译： 冷轧钢板的组成为：以质量％计含有C：0.02％以下，Si：0.14〜0.25％，P：0.020％以下，S：0.015％以下，0.0040％ ，0.0040％以下的N，0.020〜0.070％的Al，0.005〜0.030％的Nb，0.005〜0.030％的Ti，（0.0003〜0.0010％的固溶B的当量） 已经减去了形成BN的B量）），余量由Fe和不可避免的杂质构成，即使在冷轧的压下率为85％以下的情况下，铁素体组织的平均粒径也可靠地为12.0μm以下 ，并且可以可靠地满足-0.20＆nlE;＆Dgr; r＆nlE; 0.20的关系，具有优异的耳朵特性。