公开(公告)号：US07879287B2

公开(公告)日：2011-02-01

申请号：US11049836

申请日：2005-02-03

申请人： Takashi Kobayashi ,  Hiroshi Nakata ,  Chikara Kami ,  Toru Inazumi ,  Shuji Kawamura

发明人： Takashi Kobayashi ,  Hiroshi Nakata ,  Chikara Kami ,  Toru Inazumi ,  Shuji Kawamura

IPC分类号： C22C38/60 ,  C22C38/14 ,  C22C38/12 ,  C22C38/00 ,  C21D9/08 ,  C21D9/52 ,  C21D8/02

CPC分类号： C21D8/0226 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16

摘要： A hot-rolled steel sheet for high-strength ERW pipes contains about 0.02% to about 0.06% C; about 0.05% to about 0.50% Si; about 0.5% to about 1.5% Mn; about 0.010% or less P; about 0.0010% or less S; about 0.01% to about 0.10% Al; about 0.01% to about 0.10% Nb; about 0.001% to about 0.025% Ti; about 0.001% to about 0.005% Ca; about 0.003% or less 0; and about 0.005% or less N, and at least one element selected from the group consisting of about 0.01% to about 0.10% V; about 0.01% to about 0.50% Cu; about 0.01% to about 0.50% Ni; and about 0.01% to about 0.50% Mo on the basis of mass. The group of C, Si, Mn, Cu, Ni, Mo, and V and the group of Ca, 0, and S satisfy specific relationships, and the microstructure of the steel sheet is composed of about 95% by volume or more bainitic ferrite.

摘要翻译： 用于高强度ERW管的热轧钢板含有约0.02％至约0.06％的C; 约0.05％至约0.50％的Si; 约0.5％至约1.5％的Mn; 约0.010％以下P; 约0.0010％以下S; 约0.01％至约0.10％的Al; 约0.01％至约0.10％的Nb; 约0.001％至约0.025％的Ti; 约0.001％至约0.005％的Ca; 约0.003％以下0; 和约0.005％以下的N，以及选自约0.01％至约0.10％V的至少一种元素; 约0.01％至约0.50％的Cu; 约0.01％至约0.50％的Ni; 和基于质量的约0.01％至约0.50％的Mo。 C，Si，Mn，Cu，Ni，Mo和V组以及Ca，O和S组的组合满足特定关系，钢板的微结构由约95体积％以上的贝氏体铁素体 。

公开(公告)号：US20050183798A1

公开(公告)日：2005-08-25

申请号：US11049836

申请日：2005-02-03

申请人： Takashi Kobayashi ,  Hiroshi Nakata ,  Chikara Kami ,  Toru Inazumi ,  Shuji Kawamura

发明人： Takashi Kobayashi ,  Hiroshi Nakata ,  Chikara Kami ,  Toru Inazumi ,  Shuji Kawamura

IPC分类号： C22C38/04 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/50 ,  C22C38/54 ,  C21D9/08 ,  C21D9/52

CPC分类号： C21D8/0226 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16

摘要： A hot-rolled steel sheet for high-strength ERW pipes contains about 0.02% to about 0.06% C; about 0.05% to about 0.50% Si; about 0.5% to about 1.5% Mn; about 0.010% or less P; about 0.0010% or less S; about 0.01% to about 0.10% Al; about 0.01% to about 0.10% Nb; about 0.001% to about 0.025% Ti; about 0.001% to about 0.005% Ca; about 0.003% or less 0; and about 0.005% or less N, and at least one element selected from the group consisting of about 0.01% to about 0.10% V; about 0.01% to about 0.50% Cu; about 0.01% to about 0.50% Ni; and about 0.01% to about 0.50% Mo on the basis of mass. The group of C, Si, Mn, Cu, Ni, Mo, and V and the group of Ca, 0, and S satisfy specific relationships, and the microstructure of the steel sheet is composed of about 95% by volume or more bainitic ferrite.

摘要翻译： 用于高强度ERW管的热轧钢板含有约0.02％至约0.06％的C; 约0.05％至约0.50％的Si; 约0.5％至约1.5％的Mn; 约0.010％以下P; 约0.0010％以下S; 约0.01％至约0.10％的Al; 约0.01％至约0.10％的Nb; 约0.001％至约0.025％的Ti; 约0.001％至约0.005％的Ca; 约0.003％以下0; 和约0.005％以下的N，以及选自约0.01％至约0.10％V的至少一种元素; 约0.01％至约0.50％的Cu; 约0.01％至约0.50％的Ni; 和基于质量的约0.01％至约0.50％的Mo。 C，Si，Mn，Cu，Ni，Mo和V组以及Ca，O和S组的组合满足特定关系，钢板的微结构由约95体积％以上的贝氏体铁素体 。

公开(公告)号：US20050000606A1

公开(公告)日：2005-01-06

申请号：US10899642

申请日：2004-07-26

申请人： Tadashi Inoue ,  Yoichi Motoyashiki ,  Hiroyasu Kikuchi ,  Yoshimasa Funakawa ,  Hiroshi Nakata ,  Sadanori Imada ,  Toru Inazumi

发明人： Tadashi Inoue ,  Yoichi Motoyashiki ,  Hiroyasu Kikuchi ,  Yoshimasa Funakawa ,  Hiroshi Nakata ,  Sadanori Imada ,  Toru Inazumi

IPC分类号： C21D8/02

CPC分类号： C21D8/0226 ,  C21D8/021

摘要： A method for manufacturing a steel sheet comprising rough-rolling a steel consisting essentially of 0.04 to 0.12 weight % C, 0.25 to 2 weight % Si, 0.5 to 2.5 weight % Mn, 0.1 weight % or less Al, and a balance of substantially Fe and inevitable impurities to form a sheet bar; finish-rolling the sheet bar at a rolling end temperature of the Ar3 transformation point or more; primary-cooling the finish-rolled steel sheet within 1 second after completing the finish-rolling at a cooling speed of higher than 200° C./sec through a cooling range where-the difference between the start temperature of the cooling and the end temperature of the cooling is 100° C. to below 250° C.; slowly cooling the primary-cooled steel at a cooling speed of 10° C./sec or less, for 2 seconds to less than 20 seconds, at a temperature of 580° C. to 720° C.; and coiling the slowly cooled steel sheet at a temperature of 400° C. to below 540° C.

摘要翻译： 一种钢板的制造方法，其特征在于，粗轧的钢基本上由0.04〜0.12重量％的C，0.25〜2重量％的Si，0.5〜2.5重量％的Mn，0.1重量％以下的Al和余量的Fe 和不可避免的杂质形成片材; 在Ar3转化点的滚动终止温度以上进行精轧， 在冷却速度高于200℃/秒的冷却速度下完成精轧后的1秒内，通过冷却范围（冷却开始温度与终止温度之间的差） 的冷却是100℃至低于250℃。 在580℃至720℃的温度下以10℃/秒或更低的冷却速度缓慢冷却主冷却器2秒至小于20秒; 并将缓慢冷却的钢板在400℃的温度下卷取至540℃以下。

公开(公告)号：US06818079B2

公开(公告)日：2004-11-16

申请号：US10445631

申请日：2003-05-27

申请人： Tadashi Inoue ,  Yoichi Motoyashiki ,  Hiroyasu Kikuchi ,  Yoshimasa Funakawa ,  Hiroshi Nakata ,  Sadanori Imada ,  Toru Inazumi

发明人： Tadashi Inoue ,  Yoichi Motoyashiki ,  Hiroyasu Kikuchi ,  Yoshimasa Funakawa ,  Hiroshi Nakata ,  Sadanori Imada ,  Toru Inazumi

IPC分类号： C21D800

CPC分类号： C21D8/0226 ,  C21D8/021

摘要： A method for manufacturing a steel sheet comprising continuously casting a steel containing 0.04 to 0.2 wt. % C, 0.25 to 2 wt. % Si, 0.5 to 2.5 wt. % Mn, and 0.1 wt. % or less Al to form a slab; hot-rolling by rough-rolling the slab to form a sheet bar and finish-rolling the sheet bar with a reduction in thickness at the final stand of less than 30%, the finish-rolling being completed at a temperature from the Ar3 transformation point to the Ar3 transformation point +60° C.; primary-cooling the hot-rolled steel sheet, the primary cooling being started within 1 second after the completion of hot-rolling and conducting the cooling at a cooling speed of higher than 200° C./sec down to a temperature of Ar3 −30° C. to the Ar1 transformation point; slow cooling or air-cooling the primary-cooled steel sheet at a temperature of the Ar3 transformation point to the Ar1 transformation point at 10° C./sec or less for 2 seconds or more; secondary-cooling the steel sheet after the slow cooling or the air-cooling at 30° C./sec or more; and coiling the secondary-cooled steel sheet at 300° C. or less.

摘要翻译： 一种钢板的制造方法，其特征在于，连续铸造含有0.04〜0.2重量％ ％C，0.25〜2重量％ ％Si，0.5〜2.5wt。 ％Mn和0.1wt。 ％以下的Al以形成板坯; 通过对板坯进行粗轧以形成板坯进行热轧，并且在最终机架上以厚度减小的方式对板坯进行精轧，其退火温度在Ar3相变点 到Ar3转化点+ 60°C。 对热轧钢板进行一次冷却，一次冷却在热轧结束后的1秒内开始，以高于200℃/秒的冷却速度进行冷却至Ar3〜 °C至Ar1转化点; 在Ar 3相变点的温度下在10℃/秒以下缓慢冷却或空气冷却2秒以上的主冷却钢板; 在缓慢冷却或空气冷却30℃/秒以上之后对钢板进行二次冷却; 并且在300℃以下卷取二次冷却钢板。

公开(公告)号：US06632295B2

公开(公告)日：2003-10-14

申请号：US09864473

申请日：2001-05-24

申请人： Hiroshi Nakata ,  Tadashi Inoue ,  Hiroyasu Kikuchi ,  Sadanori Imada ,  Akira Hiura ,  Takeshi Nakahara ,  Satoshi Ishijima ,  Yoshimasa Funakawa ,  Toru Inazumi

发明人： Hiroshi Nakata ,  Tadashi Inoue ,  Hiroyasu Kikuchi ,  Sadanori Imada ,  Akira Hiura ,  Takeshi Nakahara ,  Satoshi Ishijima ,  Yoshimasa Funakawa ,  Toru Inazumi

IPC分类号： C21D802

CPC分类号： H01F1/16 ,  C21D8/0226 ,  C21D8/1222 ,  C21D8/1261 ,  C22C38/008 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  Y02P10/212

摘要： A high tensile strength hot-rolled steel sheet comprises 0.04 to 0.09% C, 0.1% or less Si, 0.5 to 1.5% Mn, 0.02% or less P, 0.01% or less S, 0.1% or less Al, 0.001 to 0.008% N, and 0.01 to 0.15% Ti, by mass %, the content of ingredient there each satisfying the equation (1), and the ferritic grain size &agr; (&mgr;m) satisfying the equation (2): [C]+7×[Si]+0.1×[Mn]+[P]+14×[S]+1.75×[Al] +23×[N]+[Ti]+18×[O]+7×[Cu]+18×[Sn]+7×[Mo]+ 1.7×[Cr]+70×[B]+7×[Ca]+14×[Zr]+14×[V]+7×[Nb] ≦2  (1) 3≦&agr;≦60×[Ti]+8  (2) where, [X] denotes the content (mass %) of element X. This hot-rolled steel sheet has excellent workability, high magnetic permeability and high magnetic flux density in a strong magnetic field, and has 490 MPa or higher strength, and is suitable for large electric equipment such as a rotor of generator.

摘要翻译： 高拉伸强度热轧钢板含有0.04〜0.09％的C，0.1％以下的Si，0.5〜1.5％的Mn，0.02％以下的P，0.01％以下的S，0.1％以下的Al，0.001〜0.008％ N，0.01〜0.15％的Ti，按质量％计，各成分的含量满足式（1），满足式（2）的铁素体粒径α（母）：其中，[X ]表示元件X的含量（质量％）。这种热轧钢板在强磁场中具有优异的可加工性，高磁导率和高磁通密度，并且具有490MPa或更高的强度，并且适用于大电 设备如发电机转子。

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。

公开(公告)号：US06652670B2

公开(公告)日：2003-11-25

申请号：US09837435

申请日：2001-04-18

申请人： Tadashi Inoue ,  Yoichi Motoyashiki ,  Hiroyasu Kikuchi ,  Yasuhide Ishiguro ,  Sadanori Imada ,  Toru Inazumi

发明人： Tadashi Inoue ,  Yoichi Motoyashiki ,  Hiroyasu Kikuchi ,  Yasuhide Ishiguro ,  Sadanori Imada ,  Toru Inazumi

IPC分类号： C21D802

CPC分类号： C21D9/48 ,  C21D1/19 ,  C21D8/0226 ,  C21D8/0426 ,  C21D8/0463 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04

摘要： The method for manufacturing steel sheet comprises the steps of: rough-rolling to form a sheet bar; finish-rolling the sheet bar to form a steel strip; applying primary cooling and secondary cooling to the finish-rolled steel strip; and coiling the secondary-cooled steel strip. The primary cooling is conducted at cooling speeds of 120° C./sec or more down to the temperatures of from 500 to 800° C. The secondary cooling is conducted at cooling speeds of less than 60° C./sec.

摘要翻译： 制造钢板的方法包括以下步骤：粗轧以形成板坯; 对板材进行精轧，形成钢带; 对精轧钢带进行一次冷却和二次冷却; 并卷取二次冷却钢带。 一次冷却在120℃/秒以上的冷却速度下进行至500〜800℃的温度。二次冷却以小于60℃/秒的冷却速度进行。

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.

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。

公开(公告)号：US5244513A

公开(公告)日：1993-09-14

申请号：US858553

申请日：1992-03-27

申请人： Yoshikuni Kadoya ,  Toshio Yonezawa ,  Naotake Ito ,  Toru Inazumi ,  Yutaka Moriya ,  Haruo Suzuki ,  Katsumi Masamura ,  Takemi Yamada

发明人： Yoshikuni Kadoya ,  Toshio Yonezawa ,  Naotake Ito ,  Toru Inazumi ,  Yutaka Moriya ,  Haruo Suzuki ,  Katsumi Masamura ,  Takemi Yamada

IPC分类号： C22C38/34 ,  C22C38/40

CPC分类号： C22C38/40 ,  C22C38/34

摘要： Ferrous group shape memory alloys consisting essentially of Cr: 16.0-21.0 wt %, Si: 3.0-7.0 wt % and Ni: 11.0-21.0 wt % and satisfying Ni wt %.gtoreq.[0.67.times.{Cr+1.2.times.(Si+Ti+Zr+Hf+V+Nb+Ta)}-] wt % and (Cr+Si) wt %.gtoreq.20 wt %, these ferrous-group shape-memory alloys having a corrosion resistance, a shape-memorizing properties, an intergranular corrosion resistance and a stress corrosion cracking resistance in nitric acid for nuclear fuel reprocessing plants and high-temperature, high-pressure water for light-water reactors.