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    High Tension Steel Plate with Small Acoustic Anisotropy and with Excellent Weldability and Method of Production of Same
    1.
    发明申请
    High Tension Steel Plate with Small Acoustic Anisotropy and with Excellent Weldability and Method of Production of Same 审中-公开
    具有小声各向异性和良好焊接性的高张力钢板及其制造方法

    公开(公告)号：US20080295920A1

    公开(公告)日：2008-12-04

    申请号：US11658334

    申请日：2005-02-14

    申请人： Tatsuya Kumagai ,  Masaaki Fujioka

    发明人： Tatsuya Kumagai ,  Masaaki Fujioka

    IPC分类号： C22C38/08 ,  C22C38/04 ,  C22C38/12

    CPC分类号： C22C38/02 ,  B21B1/26 ,  B21B3/00 ,  B21B37/74 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

    摘要： The present invention provides a high tension steel plate of a tensile strength of 570 MPa or more with a small acoustic anisotropy and with excellent weldability tensile strength and a method of production of steel plate predicated on the high productivity accelerated cooling stop process, which steel sheet is a high tension steel plate with a value of 0.045%≦Nb+2Ti≦0.105%, A=(Nb+2Ti)×(C+N×12/14) satisfying 0.0025 to 0.0055 and with a steel composition containing bainite in an amount of 30 vol % or more and pearlite+martensite-austenite constituent (MA) in an amount of less than 5 vol %. The steel is heated to 1200° C. or more, rough rolled at 1020° C. or more, then rolled at a cumulative reduction rate from over 920° C. to less than 1020° C. of 15% or less and a cumulative reduction rate from 860 to 920° C. of 20 to 50%, then starting accelerated cooling giving a cooling rate of 2 to 30° C./sec at 800° C. or more, stopping the accelerated cooling at 600 to 700° C., then cooling by 0.4° C./sec or less.

    摘要翻译： 本发明提供一种拉伸强度为570MPa以上的高张力钢板，其具有小的各向异性和优异的焊接性拉伸强度，以及基于高生产率的加速冷却停止工艺的钢板的生产方法，该钢板 是具有0.045％<= Nb + 2Ti <= 0.105％的高张力钢板，满足0.0025〜0.0055的A =（Nb + 2Ti）×（C + N×12/14），并且含有贝氏体的钢组合物 30体积％以上的珠光体+马氏体 - 奥氏体组分（MA）的量少于5体积％。 将钢加热至1200℃以上，在1020℃以上进行粗轧，然后以累积压下率从920℃以上到低于1020℃，累积压下率为15％以下， 从860〜920℃的还原率为20〜50％，然后开始加速冷却，800℃以上的冷却速度为2〜30℃/秒，停止600〜700℃的加速冷却 然后冷却0.4℃/秒以下。

    Sagnac optical ingredient-measuring apparatus with circular polarizers in parallel
    4.
    发明授权
    Sagnac optical ingredient-measuring apparatus with circular polarizers in parallel 有权
    具有圆偏振器的Sagnac光学成分测量装置并联

    公开(公告)号：US08730481B2

    公开(公告)日：2014-05-20

    申请号：US13363927

    申请日：2012-02-01

    申请人： Tatsuya Kumagai ,  Shinji Komatsuzaki

    发明人： Tatsuya Kumagai ,  Shinji Komatsuzaki

    IPC分类号： G01B9/02

    CPC分类号： G01N21/21 ,  G01N21/23 ,  G01N2021/216

    摘要： An optical ingredient-measuring apparatus is provided for measuring a concentration of an optically rotative substance. The apparatus includes a sensor main body which detects a phase difference between linear polarized light beams that propagate through an optical fiber loop in opposite directions, a circular polarized input component interposed in the middle of the optical fiber loop having first and second converters that convert the linear polarized light propagating through the optical fiber loop into left-hand and right-hand circular polarized light, and a concentration detector, installed in the sensor main body, which calculates the concentration of the substance in the sample based on the detected phase difference.

    摘要翻译： 提供了用于测量光学旋转物质的浓度的光学成分测量装置。 该装置包括传感器主体，其检测在相反方向上通过光纤环路传播的线偏振光束之间的相位差;插入在光纤回路中间的圆偏振输入部件，其具有第一和第二转换器， 基于检测出的相位差计算出样品中的物质的浓度的安装在传感器主体中的浓度检测器，其中，通过光纤环路传播的左旋和右旋圆偏振光的线偏振光。

    HIGH-STRENGTH STEEL PLATE AND PRODUCING METHOD THEREFOR
    5.
    发明申请
    HIGH-STRENGTH STEEL PLATE AND PRODUCING METHOD THEREFOR 有权
    高强度钢板及其生产方法

    公开(公告)号：US20110253271A1

    公开(公告)日：2011-10-20

    申请号：US12734414

    申请日：2009-10-13

    申请人： Tatsuya Kumagai ,  Akira Usami ,  Masaharu Oka

    发明人： Tatsuya Kumagai ,  Akira Usami ,  Masaharu Oka

    IPC分类号： C21D8/02 ,  C22C38/04 ,  C22C38/02 ,  C22C38/06 ,  C22C38/58 ,  C22C38/16 ,  C22C38/42 ,  C22C38/48 ,  C22C38/54 ,  C22C38/08 ,  C22C38/12

    CPC分类号： C22C38/02 ,  B66C23/62 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0226 ,  C21D9/46 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/42 ,  C22C38/48 ,  C22C38/54 ,  C22C38/58

    摘要： A high-strength steel plate includes the following composition: 0.18 to 0.23 mass % of C; 0.1 to 0.5 mass % of Si; 1.0 to 2.0 mass % of Mn; 0.020 mass % or less of P; 0.010 mass % or less of S; greater than 0.5 mass % and equal to or less than 3.0 mass % of Cu, 0.25 to 2.0 mass % of Ni; 0.003 to 0.10 mass % of Nb; 0.05 to 0.15 mass % of Al; 0.0003 to 0.0030 mass % of B; 0.006 mass % or less of N; and a balance composed of Fe and inevitable impurities. A weld crack sensitivity index Pcm of the high-strength steel plate is calculated by Pcm=[C]+[Si]/30+[Mn]/20+[Cu]/20+[Ni]/60+[Cr]/20+[Mo]/15+[V]/10+5[B], and is 0.39 mass % or less. The Ac3 transformation point is equal to or less than 850° C., the percentage value of a martensite structure is equal to or greater than 90%, the yield strength is equal to or greater than 1300 MPa, and the tensile strength is equal to or greater than 1400 MPa and equal to or less than 1650 MPa. If the tensile strength is less than 1550 MPa, the prior austenite grain size number Nγ satisfies the formula Nγ≧([TS]−1400)×0.006+7.0, and if the tensile strength is equal to or greater than 1550 MPa, the prior austenite grain size number Nγ satisfies the formula Nγ≧([TS]−1550)×0.01+7.9.

    摘要翻译： 高强度钢板包含以下成分：C：0.18〜0.23质量％ 0.1〜0.5质量％的Si; 1.0〜2.0质量％的Mn; 0.020质量％以下的P; 0.010质量％以下的S; 大于0.5质量％且等于或小于3.0质量％的Cu，0.25-2.0质量％的Ni; 0.003〜0.10质量％的Nb; 0.05〜0.15质量％的Al; 0.0003〜0.0030质量％ 0.006质量％以下的N; 余量由Fe和不可避免的杂质构成。 通过Pcm = [C] + [Si] / 30 + [Mn] / 20 + [Cu] / 20 + [Ni] / 60 + [Cr] /计算出高强度钢板的焊接裂纹敏感性指数Pcm， 20+ [Mo] / 15 + [V] / 10 + 5 [B]，为0.39质量％以下。 Ac 3相变点等于或小于850℃，马氏体组织的百分比值等于或大于90％，屈服强度等于或大于1300MPa，拉伸强度等于 或大于1400MPa且等于或小于1650MPa。 如果拉伸强度小于1550MPa，则奥氏体粒径Nγ满足公式Nγ≥（[TS] -1400）×0.006 + 7.0，若拉伸强度为1550MPa以上， 奥氏体晶粒数Nγ满足公式Nγ≥（[TS] -1550）×0.01 + 7.9。

    High toughness abrasion resistant steel with little change in hardness during use and method of production of same
    6.
    发明授权
    High toughness abrasion resistant steel with little change in hardness during use and method of production of same 有权
    使用时硬度变化小的高韧性耐磨钢及其制造方法

    公开(公告)号：US08097099B2

    公开(公告)日：2012-01-17

    申请号：US11991592

    申请日：2006-08-18

    申请人： Naoki Saitoh ,  Tatsuya Kumagai ,  Katsumi Kurebayashi ,  Hirohide Muraoka

    发明人： Naoki Saitoh ,  Tatsuya Kumagai ,  Katsumi Kurebayashi ,  Hirohide Muraoka

    IPC分类号： C22C38/22 ,  C22C38/54

    CPC分类号： C21D8/005 ,  C21D8/0263 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32

    摘要： The present invention provides an abrasion resistant steel having a hardness of HB400 to HB520, having little change of hardness during long term use, and superior in toughness, characterized by containing, by mass %, C: 0.21% to 0.30%, Si: 0.30 to 1.00%, Mn: 0.32 to 0.70%, P: 0.02% or less, S: 0.01% or less, Cr: 0.1 to 2.0%, Mo: 0.1 to 1.0%, B: 0.0003 to 0.0030%, Al: 0.01 to 0.1%, and N: 0.01% or less, further containing one or more of V: 0.01 to 0.1%, Nb: 0.005 to 0.05%, Ti: 0.005 to 0.03%, Ca: 0.0005 to 0.05%, Mg: 0.0005 to 0.05%, and REM: 0.001 to 0.1%, having a balance of Fe, and furthermore having an ingredient with an M value defined by the following formula (1) of −10 to 16: M=26×[Si]−40×[Mn]−3×[Cr]+36×[Mo]+63×[V]  (1)

    摘要翻译： 本发明提供硬度为HB400〜HB520的耐磨钢，长期使用时的硬度变化小，韧性优异，其特征在于以质量％计含有C：0.21〜0.30％的Si：0.30 至1.00％，Mn：0.32〜0.70％，P：0.02％以下，S：0.01％以下，Cr：0.1〜2.0％，Mo：0.1〜1.0％，B：0.0003〜0.0030％，Al：0.01〜 0.1％，N：0.01％以下，进一步含有V：0.01〜0.1％，Nb：0.005〜0.05％，Ti：0.005〜0.03％，Ca：0.0005〜0.05％，Mg：0.0005〜0.05 ％和REM：0.001至0.1％，余量为Fe，并且还具有由下式（1）定义的M值为-10至16的成分：M = 26×[Si] -40×[ Mn] -3×[Cr] +36×[Mo] + 63×[V]（1）

    Optical fiber vibration sensor
    7.
    发明申请
    Optical fiber vibration sensor 有权
    光纤振动传感器

    公开(公告)号：US20100281985A1

    公开(公告)日：2010-11-11

    申请号：US12078807

    申请日：2008-04-04

    申请人： Tatsuya Kumagai ,  Wataru Ohnuki

    发明人： Tatsuya Kumagai ,  Wataru Ohnuki

    IPC分类号： G01H9/00

    CPC分类号： G01H9/004

    摘要： An optical fiber vibration sensor includes a light source, an optical receiver, an optical dividing/coupling part, a signal processing unit, and a fiber loop part made of an optical fiber. A part of an optical fiber composing the fiber loop part is installed outside a housing of a main body of the optical fiber vibration sensor and another part of the optical fiber composing the fiber loop part is installed outside the housing as a vibration detecting optical fiber.

    摘要翻译： 光纤振动传感器包括光源，光接收器，光分路/耦合部分，信号处理单元和由光纤制成的光纤环路部分。 构成光纤回路部的光纤的一部分安装在光纤振动传感器的主体的壳体的外部，构成光纤回路部的光纤的另一部分安装在壳体的外部作为振动检测用光纤。

    WEAR-RESISTANT STEEL PLATE HAVING EXCELLENT WEAR RESISTANCE AT HIGH TEMPERATURES AND EXCELLENT BENDING WORKABILITY AND METHOD FOR MANUFACTURING THE SAME
    8.
    发明申请
    WEAR-RESISTANT STEEL PLATE HAVING EXCELLENT WEAR RESISTANCE AT HIGH TEMPERATURES AND EXCELLENT BENDING WORKABILITY AND METHOD FOR MANUFACTURING THE SAME 审中-公开
    具有高耐磨性和优异弯曲性能的耐磨钢板耐磨钢板及其制造方法

    公开(公告)号：US20100139820A1

    公开(公告)日：2010-06-10

    申请号：US12532032

    申请日：2009-01-06

    申请人： Tatsuya Kumagai ,  Naoki Saitoh

    发明人： Tatsuya Kumagai ,  Naoki Saitoh

    IPC分类号： C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/32 ,  C22C38/22 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54

    CPC分类号： C22C38/02 ,  C21D6/002 ,  C21D8/0263 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/32

    摘要： This wear-resistant steel plate includes, in terms of mass %, C: not less than 0.13% and not more than 0.18%, Si: not less than 0.5% but less than 1.0%, Mn: not less than 0.2% and not more than 0.8%, P: not more than 0.020%, S: not more than 0.010%, Cr: not less than 0.5% and not more than 2.0%, Mo: not less than 0.03% and not more than 0.30%, Nb: more than 0.03% but not more than 0.10%, Al: not less than 0.01% and not more than 0.20%, B: not less than 0.0005% and not more than 0.0030%, and N: not more than 0.010%, with a remainder being Fe and unavoidable impurities, wherein an element composition is such that HI is 0.7 or greater and Ceq exceeds 0.50, and an HB value (Brinell hardness) at 25° C. is not less than 360 and not more than 440.

    摘要翻译： 该耐磨钢板以质量％计含有：不小于0.13％且不大于0.18％的Si：不低于0.5％但小于1.0％，Mn：不小于0.2％ 大于0.8％，P：0.020％以下，S：0.010％以下，Cr：0.5％以上2.0％以下，Mo：0.03％以上0.30％以下 ：大于0.03％但不超过0.10％，Al：0.01％以上0.20％以下，B：0.0005％以上0.0030％以下，N：0.010％以下，与 余量为Fe和不可避免的杂质，其中元素组成为HI为0.7以上且Ceq超过0.50，25℃下的HB值（布氏硬度）为360以上且440以下。