公开(公告)号：US06737018B2

公开(公告)日：2004-05-18

申请号：US10046158

申请日：2002-01-16

申请人： Hiroki Ota ,  Takumi Ujiro ,  Junichiro Hirasawa ,  Osamu Furukimi

发明人： Hiroki Ota ,  Takumi Ujiro ,  Junichiro Hirasawa ,  Osamu Furukimi

IPC分类号： C22C3804

CPC分类号： C22C38/002 ,  C22C38/004 ,  C22C38/44 ,  C22C38/46 ,  C22C38/52 ,  C22C38/58

摘要： A corrosion-resistant chromium steel for architectural and civil engineering structural elements, includes 0.0015 to 0.02 mass percent C, 0.0015 to 0.02 mass percent N, 0.1 to 1.0 mass percent Si, 0.1 to 3.0 mass percent Mn, more than 5 mass percent to less than 10 mass percent Cr, 0.01 to 3.0 mass percent Ni, 0.1 mass percent or less of Al, 0.05 mass percent or less of P, 0.03 mass percent or less of S, 0.01 to 1.0 mass percent Co, and the balance being Fe and incidental impurities. The steel has high long-term corrosion resistance and high weld-zone toughness. Preferably, the steel further includes 0.01 to 0.5 mass percent V and 0.001 to 0.05 mass percent W, the Cr content is in the range of more than 5 mass percent to less than 8 mass percent, and the Cr, V, and W contents are within a specified ratio.

摘要翻译： 用于建筑和土木工程结构元件的耐腐蚀铬钢包括C：0.0015〜0.02质量％，N：0.0015〜0.02质量％，Si：0.1〜1.0质量％，Mn：0.1〜3.0质量％，5质量％以下 的Cr，0.01〜3.0质量％的Ni，0.1质量％以下的Al，0.05质量％以下的P，0.03质量％以下的S，0.01〜1.0质量％的Co，余量是Fe和 附带杂质。 该钢具有较高的长期耐腐蚀性和较高的焊接区韧性。 优选钢还含有0.01〜0.5质量％的V和0.001〜0.05质量％的W，Cr含量在5质量％〜小于8质量％的范围内，Cr，V和W的含量为 在规定的比例内。

公开(公告)号：US20050241737A1

公开(公告)日：2005-11-03

申请号：US10523880

申请日：2003-08-28

申请人： Takumi Ujiro ,  Hiroki Ota ,  Osamu Furukimi ,  Takashi Shiokawa

发明人： Takumi Ujiro ,  Hiroki Ota ,  Osamu Furukimi ,  Takashi Shiokawa

IPC分类号： C22C38/00 ,  C22C38/18 ,  C22C38/48

CPC分类号： C22C38/004 ,  C21D6/002 ,  C21D8/0278 ,  C21D2261/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18

摘要： To provide structural Cr-containing steel with excellent low-temperature toughness and impact toughness, with low costs as compared with stainless steel, and with sufficient corrosion resistance. Specifically, this is structural Cr-containing steel and a manufacturing method thereof, wherein the Cr-containing steel contains C of 0.002 to 0.02%; N of 0.002 to 0.02%; Si of 0.05 to 1.0%; Mn of 0.05 to 1.0%; P of 0.04% or less; S of 0.02% or less; Al of 0.001 to 0.1%; and Cr of 6.0 to 10.0%, further may contain Cu of 0.1 to 1.0%, further may contain at least one of: Ni of 0.1 to 1.0%; and Mo of 0.1 to 1.0%, and further may contain at least one of: Nb of 0.005 to 0.10%; and V of 0.005 to 0.20%, the balance are formed of Fe and unavoidable impurities, and the Cr-concentration in the surface layer of the steel is equal to or more than the value wherein 1% is subtracted from the Cr-concentration within the steel.

摘要翻译： 提供具有优异的低温韧性和冲击韧性的结构含Cr钢，与不锈钢相比成本低，具有足够的耐腐蚀性。 具体地说，这是含Cr的结构钢及其制造方法，其中含Cr的钢含有0.002-0.02％的C; N为0.002〜0.02％; Si为0.05〜1.0％; Mn为0.05〜1.0％ P为0.04％以下; S为0.02％以下; Al为0.001〜0.1％; 和6.0〜10.0％的Cr，还可以含有0.1〜1.0％的Cu，还可以含有0.1〜1.0％的Ni中的至少一种。 Mo为0.1〜1.0％，进一步含有Nb：0.005〜0.10％中的至少一种。 V为0.005〜0.20％，余量由Fe和不可避免的杂质形成，钢的表层的Cr浓度等于或大于其中的Cr浓度1％的值 钢。

公开(公告)号：US09273382B2

公开(公告)日：2016-03-01

申请号：US13637409

申请日：2011-03-18

申请人： Akito Mizutani ,  Kunio Fukuda ,  Shin Ishikawa ,  Atsutaka Honda ,  Yasuhiro Yamaguchi ,  Yasushi Kato ,  Hiroki Ota ,  Mitsuyuki Fujisawa ,  Takumi Ujiro ,  Hideaki Yamashita

发明人： Akito Mizutani ,  Kunio Fukuda ,  Shin Ishikawa ,  Atsutaka Honda ,  Yasuhiro Yamaguchi ,  Yasushi Kato ,  Hiroki Ota ,  Mitsuyuki Fujisawa ,  Takumi Ujiro ,  Hideaki Yamashita

IPC分类号： C22C38/50 ,  C22C38/44 ,  C22C38/06 ,  C22C38/12 ,  B23K1/00 ,  B23K11/00 ,  B23K20/02 ,  C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/48 ,  C22C38/08 ,  C22C38/16 ,  C22C38/26 ,  C22C38/28 ,  B01J35/04 ,  B01J37/02 ,  F01N3/28

CPC分类号： C22C38/12 ,  B01J35/04 ,  B01J37/0225 ,  B23K1/0014 ,  B23K11/0093 ,  B23K20/023 ,  B23K2101/006 ,  B23K2101/02 ,  C21D6/002 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/16 ,  C22C38/26 ,  C22C38/28 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  F01N3/281 ,  F01N2330/02 ,  F01N2530/04 ,  Y10T428/12431

摘要： A stainless steel foil contains, in percent by mass, 0.05% or less of C, 2.0% or less of Si, 1.0% or less of Mn, 0.003% or less of S, 0.05% or less of P, 25.0% to 35.0% of Cr, 0.05% to 0.30% of Ni, 3.0% to 10.0% of Al, 0.10% or less of N, 0.02% or less of Ti, 0.02% or less of Nb, 0.02% or less of Ta, 0.005% to 0.20% of Zr, 0.02% or less of Ce, 0.03% to 0.20% of REM excluding Ce, 0.5% to 6.0% in total of at least one of Mo and W, and the balance being Fe and incidental impurities.

摘要翻译： 不锈钢箔以C，0.05％以下，Si为2.0％以下，Mn为1.0％以下，S：0.003％以下，P：0.05％以下，25.0％〜35.0质量％ 的Cr，0.05〜0.30％的Ni，3.0〜10.0％的Al，0.10％以下的N，0.02％以下的Ti，0.02％以下的Nb，0.02％以下的Ta，0.005％ 至0.20％的Zr，0.02％以下的Ce，0.03％〜0.20％的除Ce以外的REM，0.5％〜6.0％的Mo和W中的至少一种，余量为Fe和附带的杂质。

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：US08607941B2

公开(公告)日：2013-12-17

申请号：US13375518

申请日：2010-05-31

申请人： Katsuhisa Yamauchi ,  Mitsuyuki Fujisawa ,  Yasushi Kato ,  Hiroki Ota ,  Hideya Furusawa ,  Takumi Ujiro

发明人： Katsuhisa Yamauchi ,  Mitsuyuki Fujisawa ,  Yasushi Kato ,  Hiroki Ota ,  Hideya Furusawa ,  Takumi Ujiro

IPC分类号： C22C38/52

CPC分类号： C22C38/02 ,  C21D6/002 ,  C21D9/0068 ,  C21D9/46 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/48 ,  C22C38/54 ,  C22C38/58 ,  F16D65/125 ,  F16D2200/0004 ,  F16D2200/0017

摘要： A steel sheet for a brake disc contains, on a mass percent basis, 0.02% or more and less than 0.10% C, 0.6% or less Si, more than 0.5% and 2.0% or less Mn, 0.06% or less P, 0.01% or less S, 0.05% or less Al, 11.0% to 13.5% Cr, 0.01% to 0.30% Ni, 0.10% to 0.60% Nb, 0.03% or more and less than 0.10% N, more than 0.0010% and 0.0060% or less B, and the balance being Fe and incidental impurities, and the steel sheet after quenching has a hardness of 32 HRC to 40 HRC on a Rockwell hardness scale C (HRC).

摘要翻译： 制动盘用钢板以质量％计含有0.02％以上且小于0.10％的C，0.6％以下的Si，大于0.5％，2.0％以下的Mn，0.06％以下的P，0.01 ％以下的S，0.05％以下的Al，11.0〜13.5％的Cr，0.01〜0.30％的Ni，0.10〜0.60％的Nb，0.03％以上且小于0.10％的N，超过0.0010％和0.0060％ 以下，余量为Fe和偶然杂质，淬火后的钢板在洛氏硬度刻度C（HRC）下的硬度为32HRC〜40HRC。

公开(公告)号：US08153055B2

公开(公告)日：2012-04-10

申请号：US13254956

申请日：2010-07-05

申请人： Tetsuyuki Nakamura ,  Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro

发明人： Tetsuyuki Nakamura ,  Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro

IPC分类号： C22C38/20 ,  C22C38/26 ,  C22C38/28

CPC分类号： C22C38/02 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0473 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28

摘要： A ferritic stainless steel contains no expensive elements such as Mo and W, is free from the oxidation resistance loss caused by addition of Cu, and thereby has excellent levels of oxidation resistance (including water vapor oxidation resistance), thermal fatigue property, and high-temperature fatigue property. The ferritic stainless steel contains, in mass %, C at 0.015% or less, Si at 0.4 to 1.0%, Mn at 1.0% or less, P at 0.040% or less, S at 0.010% or less, Cr at 16 to 23%, Al at 0.2 to 1.0%, N at 0.015% or less, Cu at 1.0 to 2.5%, Nb at 0.3 to 0.65%, Ti at 0.5% or less, Mo at 0.1% or less, and W at 0.1% or less, the Si and the Al satisfying a relation Si (%)≧Al (%).

摘要翻译： 铁素体不锈钢不含有诸如Mo和W的昂贵元素，不含由于添加Cu而导致的抗氧化性损失，因此具有优异的抗氧化性（包括水蒸汽抗氧化性），热疲劳性能， 温度疲劳性能。 铁素体系不锈钢以质量％计含有C为0.015％以下，Si为0.4〜1.0％，Mn为1.0％以下，P为0.040％以下，S为0.010％以下，Cr为16〜23 ％，Al为0.2〜1.0％，N为0.015％以下，Cu为1.0〜2.5％，Nb为0.3〜0.65％，Ti为0.5％以下，Mo为0.1％以下，W为0.1％ 较少，Si和Al满足关系Si（％）≥Al（％）。

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：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。