公开(公告)号：US20160129532A1

公开(公告)日：2016-05-12

申请号：US14534775

申请日：2014-11-06

申请人： Suo SARUWATARI ,  Kazuhiro KOJIMA ,  Shuichi NAKAMURA ,  Tatsuya KUMAGAI

发明人： Suo SARUWATARI ,  Kazuhiro KOJIMA ,  Shuichi NAKAMURA ,  Tatsuya KUMAGAI

IPC分类号： B23K35/30 ,  B23K35/02 ,  B23K35/36 ,  B23K9/173

CPC分类号： B23K35/3066 ,  B23K9/173 ,  B23K35/0266 ,  B23K35/3601 ,  B23K35/3602 ,  B23K35/3605 ,  B23K35/3607 ,  B23K35/3608 ,  B23K35/361 ,  C22C38/08

摘要： [Object] There is provided a flux-cored wire capable of obtaining a weld metal having excellent low temperature toughness and improving welding efficiency, in which preheating performed for preventing cold cracking can be omitted or simplified.[Means for Solving Problems] The flux-cored wire includes one or more of CaF2, BaF2, SrF2, MgF2, and LiF and, when a total amount thereof is defined as a, the α is 2.0% to 7.0%, by mass %, with respect to a total mass of the flux-cored wire, one or more of a Ti oxide, a Si oxide, a Mg oxide, an Al oxide, a Zr oxide, and a Ca oxide are included in the flux-cored wire, and when a total amount thereof is defined as β, the β is 0.2% to 0.9%, by mass %, with respect to the total mass of the flux-cored wire, a ratio of an amount of the CaF2 with respect to the α is 0.90 or more, and a ratio of the α with respect to the β is 3.0 or more and 15.0 or less.

摘要翻译： 本发明提供能够获得具有优异的低温韧性和提高焊接效率的焊接金属的药芯焊丝，其中可以省略或简化预防冷裂纹的预热。 [解决问题的方法]药芯焊丝包括CaF 2，BaF 2，SrF 2，MgF 2和LiF中的一种或多种，​​当其总量定义为a时，α为2.0质量％至7.0质量％ 相对于药芯焊丝的总质量，在药芯焊丝中包含Ti氧化物，Si氧化物，Mg氧化物，Al氧化物，Zr氧化物和Ca氧化物中的一种或多种 ，当其总量被定义为＆bgr时，＆bgr; 相对于药芯焊丝的总质量为0.2〜0.9质量％，CaF 2相对于α的比例为0.90以上，α相对于 到＆bgr 为3.0以上且15.0以下。

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：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。

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：US20120218555A1

公开(公告)日：2012-08-30

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： G01C19/72

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。

公开(公告)号：US08246768B2

公开(公告)日：2012-08-21

申请号：US12084502

申请日：2006-11-08

申请人： Manabu Hoshino ,  Masaaki Fujioka ,  Yoichi Tanaka ,  Tatsuya Kumagai

发明人： Manabu Hoshino ,  Masaaki Fujioka ,  Yoichi Tanaka ,  Tatsuya Kumagai

IPC分类号： C21D8/02 ,  C22C38/04

CPC分类号： B21B3/02 ,  C21D8/0205 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

摘要： A high-tensile steel plate of low acoustic anisotropy and high weldability having yield stress of 450 MPa or greater and tensile strength of 570 MPa or greater and a process for producing the steel plate are provided. The steel has an Si content of 0.10% or less, thereby achieving a volume ratio of island martensite of 3% or less, contains Nb≧0.025% and Ti≧0.005% so as to satisfy 0.045%≦[Nb]+2×[Ti]≦0.105%, contains Nb, Ti, C and N in ranges such that the value of A=([Nb]+2×[Ti])×([C]+[N]×12/14) is 0.0022 to 0.0055, and has a steel structure wherein bainite volume ratio is 30% or more and pearlite volume ratio is less than 5%.

摘要翻译： 提供具有450MPa以上的屈服应力和570MPa以上的拉伸强度的低声各向异性和高可焊性的高强度钢板以及钢板的制造方法。 钢的Si含量为0.10％以下，岛状马氏体的体积比为3％以下，含有Nb≥0.025％，Ti≥0.005％，满足0.045％＆lt; NlE; [Nb] + 2× 在[A]（[Nb] + 2×[Ti]）×（[C] + [N]×12/14）的范围内，含有Nb，Ti，C和N的Nb，Ti， 为0.0022〜0.0055，贝氏体体积率为30％以上，珠光体积率小于5％的钢结构。

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％。