公开(公告)号：US20070199632A1

公开(公告)日：2007-08-30

申请号：US11706687

申请日：2007-02-15

申请人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

发明人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

IPC分类号： C22C38/22

CPC分类号： C22C38/60 ,  C21D1/26 ,  C21D1/28 ,  C21D1/32 ,  C21D6/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/34 ,  F16C33/30 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62 ,  F16H55/32 ,  Y10S148/906

摘要： A steel part having a long rolling contact fatigue life and capable of further increasing the life of a bearing under severer using condition than usual conditions. The steel part includes steel having a composition containing 0.7% by mass to 1.1% by mass of C, 0.5% by mass to 2.0% by mass of Si, 0.4% by mass to 2.5% by mass of Mn, 1.6% by mass to 5.0% by mass of Cr, 0.1% by mass to less than 0.5% by mass of Mo, 0.010% by mass to 0.050% by mass of Al, less than 0.0015% by mass of Sb as an impurity, and the balance composed of Fe and inevitable impurities, the steel being hardened and tempered. In the steel structure of a portion from the surface to a depth of 5 mm, residual cementite has a grain diameter of 0.05 to 1.5 μm, prior austenite has a grain diameter of 30 μm or less, and the ratio by volume of the residual austenite is less than 25%.

摘要翻译： 具有滚动接触疲劳寿命长的钢部件，能够比常规条件更严格地使用轴承的使用寿命。 钢部件包括含有0.7质量％至1.1质量％的C，0.5质量％至2.0质量％的Si，0.4质量％至2.5质量％的Mn，1.6质量％至1.6质量％ 5.0质量％的Cr，0.1质量％〜小于0.5质量％的Mo，0.010质量％〜0.050质量％的Al，小于0.0015质量％的作为杂质的Sb，余量由 铁和不可避免的杂质，钢被硬化和回火。 在从表面到深度为5mm的部分的钢结构中，残留渗碳体的粒径为0.05〜1.5μm，前奥氏体的粒径为30μm以下，残留奥氏体的体积比 小于25％。

公开(公告)号：US20100139819A1

公开(公告)日：2010-06-10

申请号：US12694674

申请日：2010-01-27

申请人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

发明人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

IPC分类号： C21D8/00 ,  C21D6/00

CPC分类号： C22C38/60 ,  C21D1/26 ,  C21D1/28 ,  C21D1/32 ,  C21D6/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/34 ,  F16C33/30 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62 ,  F16H55/32 ,  Y10S148/906

摘要： A steel part having a long rolling contact fatigue life and capable of further increasing the life of a bearing under severer using condition than usual conditions. The steel part includes steel having a composition containing 0.7% by mass to 1.1% by mass of C, 0.5% by mass to 2.0% by mass of Si, 0.4% by mass to 2.5% by mass of Mn, 1.6% by mass to 5.0% by mass of Cr, 0.1% by mass to less than 0.5% by mass of Mo, 0.010% by mass to 0.050% by mass of Al, less than 0.0015% by mass of Sb as an impurity, and the balance composed of Fe and inevitable impurities, the steel being hardened and tempered. In the steel structure of a portion from the surface to a depth of 5 mm, residual cementite has a grain diameter of 0.05 to 1.5 μm, prior austenite has a grain diameter of 30 μm or less, and the ratio by volume of the residual austenite is less than 25%.

摘要翻译： 具有滚动接触疲劳寿命长的钢部件，能够比常规条件更严格地使用轴承的使用寿命。 钢部件包括含有0.7质量％至1.1质量％的C，0.5质量％至2.0质量％的Si，0.4质量％至2.5质量％的Mn，1.6质量％至1.6质量％ 5.0质量％的Cr，0.1质量％〜小于0.5质量％的Mo，0.010质量％〜0.050质量％的Al，小于0.0015质量％的作为杂质的Sb，余量由 铁和不可避免的杂质，钢被硬化和回火。 在从表面到深度为5mm的部分的钢结构中，残留渗碳体的粒径为0.05〜1.5μm，奥氏体的粒径为30μm以下，残留奥氏体的体积比 小于25％。

公开(公告)号：US08118953B2

公开(公告)日：2012-02-21

申请号：US12694674

申请日：2010-01-27

申请人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

发明人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

IPC分类号： C21D8/00 ,  C21D9/36 ,  C21D9/40

CPC分类号： C22C38/60 ,  C21D1/26 ,  C21D1/28 ,  C21D1/32 ,  C21D6/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/34 ,  F16C33/30 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62 ,  F16H55/32 ,  Y10S148/906

摘要： A steel part having a long rolling contact fatigue life and capable of further increasing the life of a bearing under severer using condition than usual conditions. The steel part includes steel having a composition containing 0.7% by mass to 1.1% by mass of C, 0.5% by mass to 2.0% by mass of Si, 0.4% by mass to 2.5% by mass of Mn, 1.6% by mass to 5.0% by mass of Cr, 0.1% by mass to less than 0.5% by mass of Mo, 0.010% by mass to 0.050% by mass of Al, less than 0.0015% by mass of Sb as an impurity, and the balance composed of Fe and inevitable impurities, the steel being hardened and tempered. In the steel structure of a portion from the surface to a depth of 5 mm, residual cementite has a grain diameter of 0.05 to 1.5 μm, prior austenite has a grain diameter of 30 μm or less, and the ratio by volume of the residual austenite is less than 25%.

摘要翻译： 具有滚动接触疲劳寿命长的钢部件，能够比常规条件更严格地使用轴承的使用寿命。 钢部件包括含有0.7质量％至1.1质量％的C，0.5质量％至2.0质量％的Si，0.4质量％至2.5质量％的Mn，1.6质量％至1.6质量％ 5.0质量％的Cr，0.1质量％〜小于0.5质量％的Mo，0.010质量％〜0.050质量％的Al，小于0.0015质量％的作为杂质的Sb，余量由 铁和不可避免的杂质，钢被硬化和回火。 在从表面到深度为5mm的部分的钢结构中，残留渗碳体的粒径为0.05〜1.5μm，奥氏体的粒径为30μm以下，残留奥氏体的体积比 小于25％。

公开(公告)号：US5968661A

公开(公告)日：1999-10-19

申请号：US881467

申请日：1997-06-24

申请人： Ichiro Saito ,  Shiro Kenmotsu ,  Tomio Aoki ,  Kunikazu Tomita ,  Yasuyuki Takada

发明人： Ichiro Saito ,  Shiro Kenmotsu ,  Tomio Aoki ,  Kunikazu Tomita ,  Yasuyuki Takada

IPC分类号： H01J29/87 ,  B32B15/00 ,  C21D9/46 ,  B32B15/04

CPC分类号： B32B15/00 ,  Y10S428/913 ,  Y10T428/1328 ,  Y10T428/1331 ,  Y10T428/24777 ,  Y10T428/24942 ,  Y10T428/31678

摘要： A steel sheet for a heat-shrink band, which is to be thermally expanded and fitted over the outer periphery of the panel portion of a cathode ray tube, which has at least a 20% elongation at an ambient temperature and at least a 40 kg/mm.sup.2 stress of yielding point after the heating and cooling, in particular one comprised by a dual phase cold rolled steel sheet comprising a ferrite phase and a martensite phase or a cold rolled steel sheet containing a retained austenite.

摘要翻译： 一种用于热收缩带的钢板，其将被热膨胀并且装配在阴极射线管的面板部分的外周上，其在环境温度下具有至少20％的伸长率和至少40kg / mm2加热冷却后屈服点的应力，特别是由包含铁素体相和马氏体相的双相冷轧钢板或含有残留奥氏体的冷轧钢板构成的应力。

公开(公告)号：US06416594B1

公开(公告)日：2002-07-09

申请号：US09680171

申请日：2000-10-05

申请人： Nobuo Yamagami ,  Kunikazu Tomita ,  Yasuyuki Takada ,  Yoshihiko Oda ,  Hideki Matsuoka ,  Tatsuhiko Hiratani ,  Katsumi Nakajima ,  Kenji Tahara

发明人： Nobuo Yamagami ,  Kunikazu Tomita ,  Yasuyuki Takada ,  Yoshihiko Oda ,  Hideki Matsuoka ,  Tatsuhiko Hiratani ,  Katsumi Nakajima ,  Kenji Tahara

IPC分类号： C21D812

CPC分类号： C21D8/0273 ,  C21D8/0226 ,  C21D8/0236 ,  C22C38/004 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14

摘要： A heat shrink band steel sheet of the present invention comprises on the basis of percent in weight C: 0.1% or less, Si: 0.1% or less, Mn: 0.1 to 2%, P: 0.15% or less, S: 0.02% or less, sol Al: 0.08% or less, and N: 0.005% or less, or C: 0.005% or less, Si: 0.1% or less, Mn: 0.1 to 2%, P: 0.15% or less, S: 0.02% or less, sol Al: 0.08% or less, N: 0.005% or less, Ti: 0.02 to 0.06%, and B: 0.0003 to 0.005%, wherein the product of a magnetic permeability at the magnetic field of 0.3 Oe after heat shrinking treatment and a thickness (mm) is at least 350. A color CRT having a sufficient magnetic shielding characteristic and a less amount of color deviation can be realized by the steel sheet.

摘要翻译： 本发明的热收缩带钢基于重量百分比C：0.1％以下，Si：0.1％以下，Mn：0.1〜2％，P：0.15％以下，S：0.02％ 以下，溶胶A1：0.08％以下，N：0.005％以下或C：0.005％以下，Si：0.1％以下，Mn：0.1〜2％，P：0.15％以下，S： 0.02％以下，溶胶Al：0.08％以下，N：0.005％以下，Ti：0.02〜0.06％，B：0.0003〜0.005％，其中磁场的磁导率为0.3Oe的磁导率在 热收缩处理和厚度（mm）至少为350°。通过钢板可以实现具有足够的磁屏蔽特性和较少颜色偏差的彩色CRT。

公开(公告)号：US5062906A

公开(公告)日：1991-11-05

申请号：US427108

申请日：1989-10-12

申请人： Akihiko Nishimoto ,  Yoshihiro Hosoya ,  Kunikazu Tomita ,  Toshiaki Urabe ,  Masaharu Jitsukawa

发明人： Akihiko Nishimoto ,  Yoshihiro Hosoya ,  Kunikazu Tomita ,  Toshiaki Urabe ,  Masaharu Jitsukawa

IPC分类号： C21D8/12 ,  C22C38/00 ,  C22C38/04

CPC分类号： C21D8/1222 ,  C21D8/12

摘要： The present invention is to produce non-oriented electrical steel sheet by a hot direct rolling. The slab is directly sent to the hot rolling without the brief soaking, whereby others than AlN inevitably precipitated check the precipitation of AlN, a roughing and a finish rolling are performed at determined reduction rates, and a delay time is taken between the roughing and the finish rolling, and besides a finish rolling is performed at not more than Ar.sub.3 so that precipitating nuclei of AlN are effectively introduced into the steel, and uniform and coarse AlN precipitation is formed by a coiling at temperature of more than 700.degree. C., thereby to enable to provide uniform and satisfied ferrite grain growth at the recrystallization annealing.

公开(公告)号：US20110290382A1

公开(公告)日：2011-12-01

申请号：US13207600

申请日：2011-08-11

申请人： Katsuhiko KIKUCHI ,  Kunikazu Tomita ,  Yutaka Tamai ,  Kazuaki Hattori ,  Kanji Inoue ,  Akira Tange ,  Norihiko Mori ,  Yurika Goto ,  Kiyoshi Kurimoto

发明人： Katsuhiko KIKUCHI ,  Kunikazu Tomita ,  Yutaka Tamai ,  Kazuaki Hattori ,  Kanji Inoue ,  Akira Tange ,  Norihiko Mori ,  Yurika Goto ,  Kiyoshi Kurimoto

IPC分类号： C21D1/42 ,  C21D9/00 ,  C21D1/40 ,  C22C38/42

CPC分类号： C22C38/02 ,  C21D1/25 ,  C21D1/28 ,  C21D9/0075 ,  C21D9/08 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58

摘要： According to one embodiment, a high-strength stabilizer steel for vehicles having excellent corrosion resistance and low-temperature toughness, containing 0.07 to 0.20% C, more than 0.6% and 1.5% or less Si, 1 to 3% Mn, 0.1 to 1.0% Cr, 0.005 to 0.080% sAl, 0.005 to 0.060% Ti, 0.005 to 0.060% Nb, 0.070% or less Ti+Nb, 150 ppm or less N, 0.035% or less P, 0.035% or less S, 0.01 to 1.00% Cu, 0.01 to 1.00% Ni, the remainder being Fe, and unavoidable impurities, wherein a structure before molding a stabilizer is any one of a bainite, a martensite, and a mixed structure of bainite/martensite and an original austenitic crystal grain size number after a heat treatment of the stabilizer is Gh 9 or more.

摘要翻译： 根据一个实施方案，一种用于具有优异的耐腐蚀性和低温韧性的车辆用高强度稳定剂钢，其含有0.07〜0.20％的C，超过0.6％，1.5％以下的Si，1〜3％的Mn，0.1〜1.0 ％Cr，0.005〜0.080％sAl，0.005〜0.060％Ti，0.005〜0.060％Nb，0.070％以下Ti + Nb，150ppm以下N，0.035％以下P，0.035％以下S，0.01〜1.00 ％Cu，0.01〜1.00％Ni，余量为Fe和不可避免的杂质，其中稳定剂成型前的结构为贝氏体，马氏体，贝氏体/马氏体和原奥氏体晶粒度的混合组织中的任一种 稳定剂热处理后的数量为Gh 9以上。

公开(公告)号：US20110243786A1

公开(公告)日：2011-10-06

申请号：US12998897

申请日：2009-12-09

申请人： Toshiyuki Murakami ,  Kunikazu Tomita ,  Tetsuo Shiraga

发明人： Toshiyuki Murakami ,  Kunikazu Tomita ,  Tetsuo Shiraga

IPC分类号： C22C38/60 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

CPC分类号： C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60

摘要： A low carbon resulfurized free cutting steel consisting of 0.04 to 0.15% of C, more than 0.10% and 0.70% or less of Si, 0.85 to 1.50% of Mn, 0.040 to 0.120% of P, 0.250% or more and less than 0.400% of S, less than 0.005% of Al, more than 0.0020% and 0.0120% or less of O, and more than 0.0070% and 0.0150% or less of N, all by mass percentage, and the balance of Fe and inevitable impurities, and satisfying a formula (1) and a formula (2), as follows: 0.15%≦Si %+2×P %−(5×Al %+10×O %+3×N %)≦0.75%  (1), and ([Mn %]5)/15

摘要翻译： 由C：0.04〜0.15％，Si：0.10％以上，0.70％以下，Mn：0.85〜1.50％，P：0.040〜0.120％，低于0.400的低碳脱硫自由切削钢 的S％，小于0.005％的Al，大于0.0020％和0.0120％以下的O，以及大于0.0070％和0.0150％以下的N，质量百分比，余量为Fe和不可避免的杂质， 满足公式（1）和式（2），如下：0.15％＆nlE; Si％+ 2×P％ - （5×Al％+ 10×O％+ 3×N％）＆nlE; 0.75％ （Mn）5）/ 15

公开(公告)号：US06666932B2

公开(公告)日：2003-12-23

申请号：US10108691

申请日：2002-03-28

申请人： Yoshimasa Funakawa ,  Tsuyoshi Shiozaki ,  Kunikazu Tomita ,  Takanobu Saito ,  Hiroshi Nakata ,  Kaoru Sato ,  Minoru Suwa ,  Tetsuo Yamamoto ,  Yasuhiro Murao ,  Eiji Maeda

发明人： Yoshimasa Funakawa ,  Tsuyoshi Shiozaki ,  Kunikazu Tomita ,  Takanobu Saito ,  Hiroshi Nakata ,  Kaoru Sato ,  Minoru Suwa ,  Tetsuo Yamamoto ,  Yasuhiro Murao ,  Eiji Maeda

IPC分类号： C22C3814

CPC分类号： C23C2/40 ,  B32B15/013 ,  C21D8/0226 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  Y10T428/12799

摘要： The present invention relates to a high strength hot rolled steel sheet containing 0.15% or less C, 0.02 to 0.35% Ti, and 0.05 to 0.7% Mo by weight percentage and consisting essentially of a matrix of ferrite structure single phase and fine precipitates with a grain size of smaller than 10 nm dispersed in the matrix, for example, a high strength hot rolled steel sheet which consists essentially of 0.06% or less C, 0.5% or less Si, 0.5 to 2.0% Mn, 0.06% or less P, 0.005% or less S, 0.1% or less Al, 0.006% or less N, 0.02 to 0.10% Ti, 0.05 to 0.6% Mo by weight percentage, and the balance being Fe, wherein fine precipitates with a grain size of smaller than 10 nm are dispersed in a matrix of ferrite structure single phase at a number per unit volume of 5×104/&mgr;m3 or higher. This steel sheet, which has tensile strength of not lower than 550 MPa, high elongation and excellent stretch flangeability, is suitable for intricately shaped automotive chassis parts such as a suspension arm.

摘要翻译： 本发明涉及含有0.15％以下的C，0.02〜0.35％Ti和0.05〜0.7％Mo的高强度热轧钢板，主要由铁素体结构单相和微细析出物组成， 分散在基体中的小于10nm的晶粒尺寸，例如基本上由0.06％以下的C，0.5％以下的Si，0.5〜2.0％的Mn，0.06％以下的P组成的高强度热轧钢板， 0.005％以下的S，0.1％以下的Al，0.006％以下的N，0.02〜0.10％的Ti，0.05〜0.6％的Mo，余量为Fe，其中微细析出的晶粒尺寸小于10 nm以5×10 4 / m 3以上的单位体积数分散在铁素体结构单相的基体中。 该拉伸强度不低于550MPa，伸长率高，拉伸凸缘性优异的钢板适用于悬挂臂等复杂形状的汽车底盘部件。

公开(公告)号：US5108522A

公开(公告)日：1992-04-28

申请号：US425183

申请日：1989-10-12

申请人： Akihiko Nishimoto ,  Yoshihara Hosoya ,  Kunikazu Tomita ,  Toshiaki Urabe ,  Masaharu Jitsukawa

发明人： Akihiko Nishimoto ,  Yoshihara Hosoya ,  Kunikazu Tomita ,  Toshiaki Urabe ,  Masaharu Jitsukawa

IPC分类号： C21D8/12 ,  C21D9/46 ,  C22C38/00 ,  C22C38/04

CPC分类号： C21D8/1272

摘要： The present invention is to produce non-oriented electrical steel sheets having excellent magnetic property under low magnetic field by effectively checking thermal stress from introducing during cooling in a final annealing without decreasing productivity, for which when a silicon steel sheet having passed a cold rolling is cooled after a final continuous annealing, especial cooling conditions are specified only to a temperature range giving bad influences to the magnetic properties under the low magnetic field so as to prevent the introduction of the thermal strain.