公开(公告)号：US08216400B2

公开(公告)日：2012-07-10

申请号：US12681853

申请日：2009-09-14

申请人： Tatsuya Kumagai

发明人： Tatsuya Kumagai

IPC分类号： C21D7/00 ,  C21D8/02 ,  C22C38/00

CPC分类号： C22C38/02 ,  C21D6/002 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/54 ,  C22C38/58 ,  Y10T428/12

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; 0.5 to 3.0 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 0.36 mass % or less. The Ac3 transformation point is equal to or less than 830° 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. A prior austenite grain size number Nγ is calculated by Nγ=−3+log2m using an average number m of crystal grains per 1 mm2 in a cross section of a sample piece of the high-strength steel plate. If the tensile strength is less than 1550 MPa, the prior austenite grain size number Nγ satisfies the formulae Nγ≧([TS]−1400)×0.004+8.0 and Nγ≧11.0, and if the tensile strength is equal to or greater than 1550 MPa, the prior austenite grain size number Nγ satisfies the formulae Nγ≧([TS]−1550)×0.008+8.6 and Nγ≦11.0, where [TS] (MPa) is the tensile strength.

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; 0.5〜3.0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。 高强度钢板的焊接裂纹敏感度指数Pcm为0.36质量％以下。 Ac 3相变点等于或小于830℃，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。 在高强度钢板的样品片的横截面中，通过Nγ= -3 + log2m，使用每1mm 2的平均数m个晶粒计算原奥氏体晶粒尺寸数Nγ。 如果拉伸强度小于1550MPa，则原奥氏体粒径Nγ满足公式Nγ≥（[TS] -1400）×0.004 + 8.0，Nγ≥11.0，如果拉伸强度为1550以上 MPa，原奥氏体粒径数Nγ满足公式Nγ≥（[TS] -1550）×0.008 + 8.6，Nγ＆nlE; 11.0，其中[TS]（MPa）为拉伸强度。

公开(公告)号：US5555235A

公开(公告)日：1996-09-10

申请号：US305490

申请日：1994-09-13

申请人： Tatsuya Kumagai ,  Hiroshi Kajioka ,  Munehiro Akiyama ,  Shigeru Oho ,  Hisao Sonobe

发明人： Tatsuya Kumagai ,  Hiroshi Kajioka ,  Munehiro Akiyama ,  Shigeru Oho ,  Hisao Sonobe

IPC分类号： G01C19/72

CPC分类号： G01C19/721

摘要： A signal processing circuit of an optical fiber gyro comprises a memory for storing data measured in the signal processing circuit in accordance with angular velocities applied to an optical fiber sensing loop at preparatory stage, and the applied angular velocities. In operation, the memory is accessed in accordance with data obtained in the signal processing circuit at an operation stage, so that an angular velocity is read from the memory without complicated calculation.

摘要翻译： 光纤陀螺仪的信号处理电路包括存储器，用于根据在准备阶段施加到光纤感测回路的角速度和所施加的角速度来存储在信号处理电路中测量的数据。 在操作中，根据在操作阶段在信号处理电路中获得的数据访问存储器，从而在没有复杂计算的情况下从存储器读取角速度。

公开(公告)号：US5396327A

公开(公告)日：1995-03-07

申请号：US982206

申请日：1992-11-25

申请人： Tatsuya Kumagai ,  Hiroshi Kajioka ,  Hisao Sonobe

发明人： Tatsuya Kumagai ,  Hiroshi Kajioka ,  Hisao Sonobe

IPC分类号： G01C19/72

CPC分类号： G01C19/721

摘要： The light emitted from a laser diode is divided into two lights and the divided lights are introduced into a sensing loop such that the lights propagate through the sensing loop clockwise and counterclockwise. These lights are combined by a light receiving device and then a signal processing circuit calculates an angular velocity .OMEGA.'. The temperature near the laser diode is detected to obtain a correction value Kt, a current supplied to the laser diode is detected to obtain a correction value Ki and a corrected angular velocity .OMEGA. is obtained by calculating the product of the angular velocity with the correction values Ki and Kt, i.e., .OMEGA.=.OMEGA.'*Ki*Kt.

摘要翻译： 从激光二极管发射的光被分成两个光，并且将分光引入到感测环中，使得光顺时针和逆时针传播通过感测环。 这些灯由光接收装置组合，然后信号处理电路计算角速度OMEGA'。 检测激光二极管附近的温度以获得校正值Kt，检测提供给激光二极管的电流以获得校正值Ki，并通过计算角速度与校正值的乘积来获得校正角速度OMEGA Ki和Kt，即OMEGA = OMEGA'* Ki * Kt。

公开(公告)号：US08500924B2

公开(公告)日：2013-08-06

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： C22C38/00 ,  C22C38/08 ,  C22C38/16 ,  C22C38/12 ,  C21D8/00 ,  C21D6/00

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，则原奥氏体粒径值Ngamma满足公式Ngamma> =（[TS] -1400）×0.006 + 7.0，如果拉伸强度等于或大于1550MPa，则 前奥氏体晶粒数Ngamma满足公式Ngamma> =（[TS] -1550）×0.01 + 7.9。

公开(公告)号：US07992440B2

公开(公告)日：2011-08-09

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 ,  G01B9/00

CPC分类号： G01H9/004

摘要： An optical fiber vibration sensor includes a light source, an optical receiver, an optical dividing/coupling portion, a signal processing unit, and a fiber loop portion made of an optical fiber. A part of an optical fiber composing the fiber loop portion is installed inside a housing of a main body of the optical fiber vibration sensor as an optical fiber for delay and another part of the optical fiber composing the fiber loop portion 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。 构成光纤环路部分的光纤的一部分安装在光纤振动传感器的主体的壳体内作为光纤延迟，并且构成光纤环路部分的光纤的另一部分安装在壳体外部，作为 振动检测光纤。

公开(公告)号：US20100230016A1

公开(公告)日：2010-09-16

申请号：US12681853

申请日：2009-09-14

申请人： Tatsuya Kumagai

发明人： Tatsuya Kumagai

IPC分类号： C21D8/02 ,  C22C38/00 ,  C22C38/06 ,  C22C38/08 ,  C22C38/40 ,  C22C38/16

CPC分类号： C22C38/02 ,  C21D6/002 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/54 ,  C22C38/58 ,  Y10T428/12

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; 0.5 to 3.0 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 0.36 mass % or less. The Ac3 transformation point is equal to or less than 830° 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. A prior austenite grain size number Nγ is calculated by Nγ=−3+log2m using an average number m of crystal grains per 1 mm2 in a cross section of a sample piece of the high-strength steel plate. If the tensile strength is less than 1550 MPa, the prior austenite grain size number Nγ satisfies the formulae Nγ≧([TS]−1400)×0.004+8.0 and Nγ≧11.0, and if the tensile strength is equal to or greater than 1550 MPa, the prior austenite grain size number Nγ satisfies the formulae Nγ≧([TS]−1550)×0.008+8.6 and Nγ≦11.0, where [TS] (MPa) is the tensile strength.

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; 0.5〜3.0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。 高强度钢板的焊接裂纹敏感度指数Pcm为0.36质量％以下。 Ac 3相变点等于或小于830℃，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。 在高强度钢板的样品片的横截面中，通过Nγ= -3 + log2m，使用每1mm 2的平均数m个晶粒计算原奥氏体晶粒尺寸数Nγ。 如果拉伸强度小于1550MPa，则原奥氏体粒径Nγ满足公式Nγ≥（[TS] -1400）×0.004 + 8.0，Nγ≥11.0，如果拉伸强度为1550以上 MPa，原奥氏体粒径数Nγ满足公式Nγ≥（[TS] -1550）×0.008 + 8.6，Nγ＆nlE; 11.0，其中[TS]（MPa）为拉伸强度。

公开(公告)号：US20060065335A1

公开(公告)日：2006-03-30

申请号：US10509647

申请日：2003-03-28

申请人： Yasushi Mizutani ,  Ryuji Uemori ,  Tatsuya Kumagai ,  Tadayoshi Okada ,  Yoshiyuki Watanabe ,  Yoshio Terada

发明人： Yasushi Mizutani ,  Ryuji Uemori ,  Tatsuya Kumagai ,  Tadayoshi Okada ,  Yoshiyuki Watanabe ,  Yoshio Terada

IPC分类号： C22C38/12

CPC分类号： C22C38/004 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/0426 ,  C21D8/0463 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

摘要： The present invention relates to a high-tensile-strength low alloy carbon steel (in the form of a steel sheet, a steel pipe, a section steel or a wire rod), for a building structure, said high-tensile-strength steel being excellent in high temperature strength during a relatively short span of about one hour in the temperature from 600° C. to 800° C. and being used in the field of building construction, civil engineering, an offshore structure, shipbuilding, a reservoir tank or the like; and, more specifically, is a high-tensile-strength steel excellent in high temperature strength, characterized by containing, in mass, C at not less than 0.005% to less than 0.08%, Si at not more than 0.5%, Mn at 0.1 to 1.6%, P at not more than 0.02%, S at not more than 0.01%, Mo at 0.1 to 1.5%, Nb at 0.03 to 0.3%, Ti at not more than 0.025%, B at 0.0005 to 0.003%, Al at not more than 0.06%, and N at not more than 0.006%, with the balance consisting of Fe and unavoidable impurities and satisfying the expression p≧−0.0029×T+2.48 when the steel temperature T (° C.) is within the range from 600° C. to 800° C., wherein p is a stress drop ratio (a yield stress at a high temperature/a yield stress at room temperature) that is obtained by converting a yield stress normalized by using a yield stress at room temperature.

摘要翻译： 本发明涉及一种用于建筑结构的高强度低合金碳素钢（以钢板，钢管，截面钢或线材的形式），所述高强度钢为 在600℃至800℃的温度下，在相当短的约1小时内具有优异的高温强度，并且用于建筑施工，土木工程，海上结构，造船，储存罐或 类似; 更具体地说，是高温强度优异的高强度钢，其特征在于，以质量计含有不低于0.005％的Si至少为0.08％的C，0.1％以下的Mn 至1.6％，P不大于0.02％，S为0.01％以下，Mo为0.1〜1.5％，Nb为0.03〜0.3％，Ti为0.025％以下，B为0.0005〜0.003％，Al为Al 不大于0.06％，N为0.006％以下，余量由Fe和不可避免的杂质构成，当钢的温度T（℃）在...内时，满足p> = 0.0029×T + 2.48的表达式 范围为600℃至800℃，其中p为通过使用屈服应力归一化的屈服应力转换得到的应力下降率（在高温下的屈服应力/室温下的屈服应力） 室内温度。

公开(公告)号：US5701177A

公开(公告)日：1997-12-23

申请号：US795293

申请日：1997-02-04

申请人： Tatsuya Kumagai ,  Hiroshi Kajioka ,  Osamu Kobayashi ,  Munehiro Akiyama ,  Shigeru Oho ,  Hisao Sonobe

发明人： Tatsuya Kumagai ,  Hiroshi Kajioka ,  Osamu Kobayashi ,  Munehiro Akiyama ,  Shigeru Oho ,  Hisao Sonobe

IPC分类号： G01C25/00 ,  G01C19/72 ,  G01C19/64

CPC分类号： G01C19/721

摘要： A phase modulated light is propagated through an optical fiber sensing loop, from which a propagated light is obtained. The propagated light is converted to an electric signal, from which a fundamental wave component and even number harmonic wave components of a phase modulating signal for the phase modulated signal are detected. In accordance with the changes of the fundamental and even number harmonic wave components, fault is detected. On the other hand, the electric signal may be integrated to provide an integrated signal. In accordance with the comparison between the integrated signal and a fault reference voltage, the fault may be detected.

摘要翻译： 相位调制光通过光纤感测环路传播，从中获得传播的光。 传播的光被转换成电信号，从中检测相位调制信号的相位调制信号的基波分量和偶次谐波分量。 根据基波和偶次谐波成分的变化，检测到故障。 另一方面，电信号可以被集成以提供积分信号。 根据集成信号与故障参考电压的比较，可以检测到故障。

公开(公告)号：US20060016526A1

公开(公告)日：2006-01-26

申请号：US11215413

申请日：2005-08-29

申请人： Yasushi Mizutani ,  Yoshiyuki Watanabe ,  Ryuji Uemori ,  Tatsuya Kumagai

发明人： Yasushi Mizutani ,  Yoshiyuki Watanabe ,  Ryuji Uemori ,  Tatsuya Kumagai

IPC分类号： C21D8/00 ,  C22C38/22

CPC分类号： C22C38/02 ,  C21D8/00 ,  C21D8/0226 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/12

摘要： The present invention provides a high-strength steel for welded structures excellent in strength at a high temperature of a temperature range of 600° C. to 800° C. and a method of production of the same, in particular 490 MPa class high-strength steel for welded structures excellent in high temperature strength containing C: 0.005% to less than 0.040%, Si: 0.5% or less, Mn: 0.1 to less than 0.5%, P:0.02% or less, S: 0.01% or less, Mo: 0.3 to 1.5%, Nb: 0.03 to 0.15%, Al: 0.06% or less, and N: 0.006% or less and in accordance with need one or more of Cu, Ni, Cr, V, Ti, Ca, REM, and Mg, having a weld crack susceptible formulation PCM defined as PCM=C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B of 0.15% or less, substantially not containing B, and a remainder Fe and unavoidable impurities, the microstructure being mainly composed of a mixed structure of ferrite and bainite, and the fraction of bainite being 20 to 90%.

摘要翻译： 本发明提供一种在600℃〜800℃的高温下的强度优异的焊接结构体的高强度钢及其制造方法，特别是490MPa级的高强度 含有C：0.005〜小于0.040％，Si：0.5％以下，Mn：0.1〜小于0.5％，P：0.02％以下，S：0.01％以下的高温强度优异的焊接结构用钢， Mo：0.3〜1.5％，Nb：0.03〜0.15％，Al：0.06％以下，N：0.006％以下，根据需要Cu，Ni，Cr，V，Ti，Ca，REM， ，和具有焊接裂纹易受影响的制剂P＆lt; CM＆gt;定义为P CM + C + Si / 30 + Mn / 20 + Cu / 20 + Ni / 60 + Cr / 20 + Mo / 15 + V / 10 + 5B为0.15％以下，基本不含B，余量为Fe和不可避免的杂质，微观结构主要由铁素体和贝氏体组成，贝氏体组分 为20〜90％。

公开(公告)号：US5608525A

公开(公告)日：1997-03-04

申请号：US404817

申请日：1995-03-14

申请人： Tatsuya Kumagai ,  Keiji Abe ,  Munehiro Akiyama ,  Hiroshi Kajioka ,  Hisao Sonobe ,  Shigeru Oho

发明人： Tatsuya Kumagai ,  Keiji Abe ,  Munehiro Akiyama ,  Hiroshi Kajioka ,  Hisao Sonobe ,  Shigeru Oho

IPC分类号： G01C19/72

CPC分类号： G01C19/72

摘要： A photodetector generates an electric signal by receiving a light signal which is obtained by coupling lights having propagated through an optical fiber sensing loop in clock-wise and counter clock-wise directions, and modulated in a phase modulator. The electric signal is detected in a synchronous detection circuit to generate a fundamental wave component of the phase modulation signal, a duplicate harmonic wave component, a quadruple harmonic wave component, and an orthogonal component which is obtained in accordance with a phase shift of the quadruple harmonic wave component by one quarter period.

摘要翻译： 光电检测器通过接收光信号来产生电信号，所述光信号是通过将在光纤传感环路中传播的光沿时钟方向和逆时针方向耦合而获得的，并在相位调制器中进行调制。 在同步检测电路中检测出电信号，生成相位调制信号的基波分量，重复谐波分量，四次谐波分量，以及根据四极的相移得到的正交分量 谐波分量四分之一。