公开(公告)号：USRE40950E1

公开(公告)日：2009-11-10

申请号：US10678057

申请日：2000-03-14

申请人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C22C38/18

CPC分类号： C22C38/46 ,  C21D8/0405 ,  C21D8/0436 ,  C21D8/0463 ,  C21D8/0473 ,  C22C38/001 ,  C22C38/002 ,  C22C38/48

摘要： The present invention provides a ferritic stainless steel sheet having excellent formability and excellent surface quality after forming. In specific means, the steel sheet contains, by mass %, 0.02 to 0.06% of C, 1.0% or less of Si, 1.0% or less of Mn, 0.05% or less of P, 0.01% or less of S, 0.005% or less of Al, 0.005% or less of Ti, 11 to 30% of Cr, 0.7% or less of Ni, the balance composed of Fe, and inevitable impurities, wherein N is contained to satisfy the relation to the C content represented by 0.06≦(C+N)≦0.12, and 1≦N/C, and V is contained to satisfy the relation to the N content represented by 1.5×10−3≦(V×N)≦1.5×10−2 (wherein C, N and V: the contents (mass %) of the elements).

公开(公告)号：US06458221B1

公开(公告)日：2002-10-01

申请号：US09700779

申请日：2000-11-20

申请人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C22C3818

CPC分类号： C22C38/46 ,  C21D8/0405 ,  C21D8/0436 ,  C21D8/0463 ,  C21D8/0473 ,  C22C38/001 ,  C22C38/002 ,  C22C38/48

摘要： The present invention provides a ferritic stainless steel sheet having excellent formability and excellent surface quality after forming. In specific means, the steel sheet contains, by mass %, 0.02 to 0.06% of C, 1.0% or less of Si, 1.0% or less of Mn, 0.05% or less of P, 0.01% or less of S, 0.005% or less of Al, 0.005% or less of Ti, 11 to 30% of Cr, 0.7% or less of Ni, the balance composed of Fe, and inevitable impurities, wherein N is contained to satisfy the relation to the C content represented by 0.06≦(C+N)≦0.12, and 1≦N/C, and V is contained to satisfy the relation to the N content represented by 1.5×10−3≦(V×N)≦1.5×10−2 (wherein C, N and V: the contents (mass %) of the elements).

摘要翻译： 本发明提供一种成形性优异且成形后表面质量优异的铁素体系不锈钢板。 具体地说，钢板以质量％计含有C：0.02〜0.06％，Si：1.0％以下，Mn：1.0％以下，P：0.05％以下，S：0.01％以下，S：0.005％ 或更少的Al，0.005％以下的Ti，11〜30％的Cr，0.7％以下的Ni，余量由Fe和不可避免的杂质组成，其中N包含以满足与C 0.06 <=（C + N）<= 0.12，1 <= N / C，并且包含V以满足与1.5×10 -3 <=（VxN）<= 1.5×10 -2 其中C，N和V：元素的含量（质量％））。

公开(公告)号：US06500280B2

公开(公告)日：2002-12-31

申请号：US09946243

申请日：2001-09-05

申请人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C21D804

CPC分类号： C21D8/0205 ,  C21D8/0231 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0405 ,  C22C38/001 ,  C22C38/004 ,  C22C38/18 ,  C22C38/46

摘要： Producing a ferritic Cr-containing steel sheet having excellent ductility, formability, and anti-ridging properties, and exhibiting excellent surface quality after forming, wherein a ferritic Cr-containing steel sheet contains, by mass %, about 0.001 to 0.12% of C, about 0.001 to 0.12% of N, and about 9 to 32% of Cr, and has a crystal grain structure in which in a section of a hot-rolled annealed steel sheet in the thickness direction parallel to the rolling direction, an elongation index of crystal grains is 5 or less at any position, and in a section of a cold-rolled annealed steel sheet in the thickness direction parallel to the rolling direction, any colony of coarse grains oriented in the rolling direction has an aspect ratio of 5 or less. The production method includes hot rolling, pre-rolling by cold or warm rolling with a rolling reduction of about 2 to 15%, hot-rolled sheet annealing, cold rolling, and finish annealing; preferably the FDT of hot rolling is 850° C., and 0.0002 to 0.0030% of B is added.

摘要翻译： 制造具有优异的延展性，成形性和抗皱性的铁素体系Cr系钢板，成形后表现出优异的表面质量，其中铁素体含Cr钢板以质量％计含有C：0.001〜0.12％ 约0.001〜0.12％的N和约9〜32％的Cr，并且具有在热轧退火钢板的厚度方向平行于轧制方向的截面中的延伸率指数 在任何位置的晶粒为5以下，在与轧制方向平行的厚度方向的冷轧退火钢板的截面中，在轧制方向取向的粗晶粒的任意集合都具有5以下的纵横比 。 制造方法包括热轧，冷轧或暖轧预压，轧制压下率为2〜15％左右，热轧板退火，冷轧，成品退火; 优选热轧的FDT为850℃，添加0.0002〜0.0030％的B。

公开(公告)号：US06413332B1

公开(公告)日：2002-07-02

申请号：US09650052

申请日：2000-08-29

申请人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C21D802

CPC分类号： C21D8/0205 ,  C21D8/0231 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0405 ,  C22C38/001 ,  C22C38/004 ,  C22C38/18 ,  C22C38/46

摘要： Producing a ferritic Cr-containing steel sheet having excellent ductility, formability, and anti-ridging properties, and exhibiting excellent surface quality after forming, wherein a ferritic Cr-containing steel sheet contains, by mass %, about 0.001 to 0.12% of C, about 0.001 to 0.12% of N, and about 9 to 32% of Cr, and has a crystal grain structure in which in a section of a hot-rolled annealed steel sheet in the thickness direction parallel to the rolling direction, an elongation index of crystal grains is 5 or less at any position, and in a section of a cold-rolled annealed steel sheet in the thickness direction parallel to the rolling direction, any colony of coarse grains oriented in the rolling direction has an aspect ratio of 5 or less. The production method includes hot rolling, pre-rolling by cold or warm rolling with a rolling reduction of about 2 to 15%, hot-rolled sheet annealing, cold rolling, and finish annealing; preferably the FDT of hot rolling is 850° C., and 0.0002 to 0.0030% of B is added.

摘要翻译： 制造具有优异的延展性，成形性和抗皱性的铁素体系Cr系钢板，成形后表现出优异的表面质量，其中铁素体含Cr钢板以质量％计含有C：0.001〜0.12％ 约0.001〜0.12％的N和约9〜32％的Cr，并且具有在热轧退火钢板的厚度方向平行于轧制方向的截面中的延伸率指数 在任何位置的晶粒为5以下，在与轧制方向平行的厚度方向的冷轧退火钢板的截面中，在轧制方向取向的粗晶粒的任意集合都具有5以下的纵横比 。 制造方法包括热轧，冷轧或暖轧预压，轧制压下率为2〜15％左右，热轧板退火，冷轧，成品退火; 优选热轧的FDT为850℃，添加0.0002〜0.0030％的B。

公开(公告)号：US06419878B2

公开(公告)日：2002-07-16

申请号：US09867422

申请日：2001-05-31

申请人： Yoshihiro Yazawa ,  Takumi Ujiro ,  Susumu Satoh ,  Hiroki Ota

发明人： Yoshihiro Yazawa ,  Takumi Ujiro ,  Susumu Satoh ,  Hiroki Ota

IPC分类号： C22C3852

CPC分类号： C22C38/52 ,  C22C38/001 ,  C22C38/004 ,  C22C38/34 ,  C22C38/44 ,  C22C38/46 ,  C22C38/58

摘要： Fe—Cr alloy having excellent weldability and initial rust resistance with no requirement of greatly increasing the amount of elements such as Ni, Cu, Cr or Mo, addition of Nb or Ti and, further, excess reduction of C and N, in which the Fe—Cr alloy containing Cr in an amount of more than about 8.0 mass % and less than about 15 mass % is controlled specifically for the ingredients to contain Co: from about 0.01 mass % to about 0.5 mass %, V: from about 0.01 mass % to about 0.5 mass % and W: from about 0.001 mass % to about 0.05 mass %, and a value X represented by the following equation (1) and, preferably, a value Z represented by the following equation (2) satisfy: X≦11.0, and 0.03≦Z≦1.5 respectively: X value=Cr(mass %)+Mo(mass %)+1.5Si(mass %)+0.5Nb(mass %)+0.2V(mass %)+0.3W(mass %)+8Al(mass %)−Ni(mass %)−0.6Co(mass %)−0.5Mn(mass %)−30C(mass %)−30N(mass %)−0.5Cu(mass %)  (1) Z value=(Co(mass %)+1.5V(mass %)+4.8W(mass %))  (2) ,and more preferably, C/N is controlled to be 0.6 or less.

摘要翻译： Fe-Cr合金具有优异的焊接性和初始防锈性，不需要大量增加元素如Ni，Cu，Cr或Mo，添加Nb或Ti，进一步减少C和N，其中 对于含有Co的成分，含量大于约8.0质量％且小于约15质量％的Cr的Fe-Cr合金被控制为约0.01质量％至约0.5质量％，V：约0.01质量％ 至约0.5质量％，W：约0.001质量％至约0.05质量％，由下式（1）表示的值X，优选由下式（2）表示的值Z满足：X <= 11.0和0.03 <= Z <= 1.5，更优选将C / N控制在0.6以下。

公开(公告)号：US06383309B1

公开(公告)日：2002-05-07

申请号：US09725624

申请日：2000-11-29

申请人： Norimasa Hirata ,  Takeshi Yokota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Norimasa Hirata ,  Takeshi Yokota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C22C3818

摘要： A ferritic stainless steel plate of excellent ridging resistance and formability, as well as a manufacturing method thereof are proposed. Specifically, the rolling is conducted at a rolling reduction of 30% or more in at least 1 pass and at a temperature difference between the center of the plate thickness and the surface of 200° C. or lower in a pass for the maximum rolling reduction to cause the area ratio of a {111} orientation colony to be present by 30% or more in the regions of ⅛ to ⅜ and ⅝ to ⅞ of the plate thickness. The {111} orientation colony is an assembly of adjacent crystals in which the angle of orientation vector for each of the crystals relative to the direction vector vertical to the rolling surface is within 15°.

公开(公告)号：US06645324B2

公开(公告)日：2003-11-11

申请号：US10103445

申请日：2002-03-21

申请人： Norimasa Hirata ,  Takeshi Yokota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Norimasa Hirata ,  Takeshi Yokota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C21D802

CPC分类号： C21D6/002 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D8/0405 ,  C22C38/002 ,  C22C38/40

摘要： A ferritic stainless steel plate of excellent ridging resistance and formability, as well as a manufacturing method thereof are proposed. Specifically, the rolling is conducted at a rolling reduction of 30% or more in at least 1 pass and at a temperature difference between the center of the plate thickness and the surface of 200° C. or lower in a pass for the maximum rolling reduction to cause the area ratio of a {111} orientation colony to be present by 30% or more in the regions of ⅛ to ⅜ and ⅝ to ⅞ of the plate thickness. The {111} orientation colony is an assembly of adjacent crystals in which the angle of orientation vector for each of the crystals relative to the direction vector vertical to the rolling surface is within 15°.

摘要翻译： 提出了具有优异抗皱性和成形性的铁素体不锈钢板及其制造方法。 具体而言，在至少1次通过中的压下率为30％以上，在板厚中心与200℃以下的温度差之间进行轧制，最终轧制压下率 使{111}取向菌落的面积比在板厚的1/8〜3/8〜5/8〜7/8的范围内存在30％以上。 {111}取向菌落是相邻晶体的组合，其中每个晶体相对于垂直于滚动表面的方向矢量的<111>取向矢量的角度在15°以内。

公开(公告)号：US5709836A

公开(公告)日：1998-01-20

申请号：US602857

申请日：1996-02-28

申请人： Mitsuyuki Fujisawa ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh ,  Koji Yamato

发明人： Mitsuyuki Fujisawa ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh ,  Koji Yamato

IPC分类号： C21D8/04 ,  C22C27/06 ,  C22C38/00 ,  C22C38/28 ,  C22C38/32 ,  C22C38/26

CPC分类号： C22C27/06 ,  C22C38/28 ,  C22C38/32

摘要： A chromium steel sheet having excellent press formability, particularly deep-drawing formability and resistance to secondary work brittleness. The construction is a chromium steel sheet including C: not more than 0.03 wt %, Si: not more than 1.0 wt %, Mn: not more than 1.0 wt %, P: not more than 0.05 wt %, S: not more than 0.015 wt %, Al: not more than 0.10 wt %, N: not more than 0.02 wt %, Cr: 5-60 wt %, Ti: 4(C+N)-0.5 wt %, Nb: 0.003-0.020 wt %, B: 0.0002-0.005 wt %, and, if necessary, one or more selected from Mo: 0.01-5.0 wt %, Ca: 0.0005-0.01 wt % and Se: 0.0005-0.025 wt %, and the balance being Fe and inevitable impurities.

摘要翻译： PCT No.PCT / JP95 / 01341 Sec。 371日期1996年2月28日 102（e）日期1996年2月28日PCT提交1995年7月5日PCT公布。 第WO96 / 01335号公报 日期1996年5月18日具有优异的压制成型性，特别是深冲成形性和耐二次加工脆性的铬钢板。 该结构是C：不大于0.03重量％，Si：1.0重量％以下，Mn：1.0重量％以下，P：0.05重量％以下S：不大于0.015的铬钢板 重量％，Al：0.10重量％以下，N：0.02重量％以下，Cr：5-60重量％，Ti：4（C + N）-0.5重量％，Nb：0.003-0.020重量％ B：0.0002-0.005重量％，如果需要，选自Mo：0.01-5.0重量％，Ca：0.0005-0.01重量％和Se：0.0005-0.025重量％中的一种或多种，​​余量为Fe和不可避免的杂质 。

公开(公告)号：US6113710A

公开(公告)日：2000-09-05

申请号：US269295

申请日：1999-03-29

申请人： Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C21D9/48 ,  C21D8/04 ,  C22C38/00 ,  C22C38/18 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/54

CPC分类号： C22C38/18 ,  C21D8/0405 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C21D8/0426

摘要： The present invention provides a ferritic stainless steel plate improved in the deep drawability and the anti-ridging property at deep drawing work and the production technique thereof. The practical construction of the present invention is a ferritic stainless steel plate containing from 0.001 to 0.015 wt. % C, not more than 1.0 wt. % Si, not more than 1.0 wt. % Mn, not more than 0.05 wt. % P, not more than 0.010 wt. % S, from 8 to 30 wt. % Cr, not more than 0.08 wt. % Al, from 0.005 to 0.015 wt. % N, not more than 0.0080 wt. % O, not more than 0.25 wt. % Ti with Ti/N.gtoreq.12, and from 0.05 to 0.10 wt. % (Nb+V) with V/Nb being from 2 to 5, and, if necessary, further containing one or more kinds selected from not more than 2.0 wt. % Mo, not more than 1.0 wt. % Ni, and not more than 1.0 wt. % Cu together with one or more kinds selected from from 0.0005 to 0.0030 wt. % B, from 0.0007 to 0.0030 wt. % Ca and from 0.0005 to 0.0030 wt. % Mg. Furthermore, in the production method of the present invention, the above-described ferritic stainless steel plate is produced by heating the steel slab made up of the above-described components to a temperature range of 1170.degree. C. or lower, finishing rough hot rolling of the slab at a temperature range of 950.degree. C. or higher, and then carrying out hot finish-rolling.

摘要翻译： PCT No.PCT / JP98 / 03469 Sec。 371 1999年3月29日第 102（e）1999年3月29日PCT PCT 1998年8月4日PCT公布。 公开号WO99 /​​ 07909 日期1999年2月18日本发明提供了一种改进深冲性和深冲压加工抗皱性能的铁素体不锈钢板及其制造方法。 本发明的实际构造是含有0.001〜0.015重量％的铁素体不锈钢板。 ％C，不大于1.0wt。 ％Si，不大于1.0wt。 ％Mn，不大于0.05wt。 ％P，不大于0.010重量％ ％S，8〜30wt。 ％Cr，不大于0.08wt。 ％Al，0.005〜0.015wt。 ％N，不大于0.0080wt。 ％O，不大于0.25wt。 ％Ti，Ti / N> / = 12，和0.05〜0.10wt。 ％（Nb + V），V / Nb为2〜5，如果需要，还含有选自不超过2.0重量％的一种或多种。 ％Mo，不大于1.0wt。 ％Ni，不大于1.0wt。 ％Cu与选自0.0005至0.0030重量％的一种或多种。 ％B，0.0007-0.0030wt。 ％Ca和0.0005〜0.0030wt。 ％Mg。 此外，在本发明的制造方法中，上述铁素体系不锈钢板是将由上述构成的钢坯加热至1170℃以下的温度范围， 在950℃以上的温度范围内进行热精轧。

公开(公告)号：US5948181A

公开(公告)日：1999-09-07

申请号：US939945

申请日：1997-09-29

申请人： Masaaki Kohno ,  Kazuhide Ishii ,  Kunio Fukuda ,  Takumi Ujiro ,  Susumu Satoh

发明人： Masaaki Kohno ,  Kazuhide Ishii ,  Kunio Fukuda ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： B21B45/08 ,  C21D8/02 ,  C22C38/18 ,  C21D7/13

CPC分类号： C21D8/0205 ,  B21B45/08 ,  C21D8/0278

摘要： A hot-rolled stainless steel strip contains at least 10 wt % Cr and 1.0 wt % or less of Si, and has a controlled scale thickness of not more than 2.5 .mu.m in the surface layer. The average thickness of the Si-containing oxide layer formed in the scale/alloy substitute interface is 0.1 .mu.m or less. The hot-rolled stainless steel strip is produced by hot rolling at an elongation rate of at least 150 or hot rough rolling to form a sheet bar, descaling by spraying superhigh pressure water to the surface of the sheet bar at an impact pressure (p) of 25 kgf/cm.sup.2 or more and a flow rate density of 0.002 l/cm.sup.2 or more, and then finish rolling so that the maximum reduction ratio per pass satisfies certain disclosed criteria.

摘要翻译： 热轧不锈钢带含有至少10重量％的Cr和1.0重量％以下的Si，并且在表面层中具有不大于2.5μm的可控鳞片厚度。 形成在刻度/合金替代界面中的含Si氧化物层的平均厚度为0.1μm以下。 热轧不锈钢带通过以至少150的伸长率或热粗轧进行热轧制成，以形成片材，通过在冲击压力（p）下将超高压水喷射到片材的表面进行除鳞， 25kgf / cm 2以上，流量密度为0.002l / cm 2以上，进行精轧，使每通过最大压下率满足一定的公开标准。