公开(公告)号：US20110040499A1

公开(公告)日：2011-02-17

申请号：US12935307

申请日：2009-03-27

申请人： Takahiro Koshihara ,  Hiroharu Kato ,  Akio Nagamune

发明人： Takahiro Koshihara ,  Hiroharu Kato ,  Akio Nagamune

IPC分类号： G01N33/20

CPC分类号： G01N21/892 ,  G01N21/8922 ,  G01N27/83 ,  G01N2021/8918

摘要： An apparatus for detecting periodic defects includes a sensor that obtains signals to evaluate properties of an area having a length longer than an expected defect period on a target sample; a small area selector that separates a plurality of small areas whose area length is shorter than that of the area so that all distance intervals adjacent to one another are equal in a periodic defect arrangement direction to determine positions of the plurality of small areas, and selecting signals corresponding to the positions of the plurality of small areas from outputs from the sensor; an evaluation index calculator that calculates a similarity evaluation index between signal patterns among a plurality of signals selected by the small area selector; a set value changer that changes the positions of the small areas and the distance interval, and repeating computational processings of the small area selector and the evaluation index calculator; and a period judgment device that judges the distance interval as a period when the evaluation index is higher than a value set beforehand.

摘要翻译： 用于检测周期性缺陷的装置包括：传感器，其获取信号以评估长度大于目标样品上的预期缺陷周期的区域的性质; 小区域选择器，其区分面积长度小于区域长度的多个小区域，使得在周期性缺陷排列方向上彼此相邻的所有距离间隔相等，以确定多个小区域的位置，并选择 对应于来自传感器的输出的多个小区域的位置的信号; 评估指标计算器，计算由小区域选择器选择的多个信号之间的信号模式之间的相似度评估指标; 改变小区域和距离间隔的位置的设定值改变器，并且重复小区域选择器和评估指标计算器的计算处理; 以及周期判断装置，其将所述距离间隔判定为所述评价指标高于预先设定的值的期间。

公开(公告)号：US20110000338A1

公开(公告)日：2011-01-06

申请号：US12667437

申请日：2008-08-20

申请人： Takahiro Koshihara ,  Hiroharu Kato ,  Akio Nagamune

发明人： Takahiro Koshihara ,  Hiroharu Kato ,  Akio Nagamune

IPC分类号： C22B5/00 ,  G01B7/24 ,  G01L1/00 ,  C21B3/00

CPC分类号： G01B7/34 ,  G01N27/83

摘要： A detection method for detecting a concavo-convex shape surface defect existing on a ferromagnetic metal object including sensing a signal attributed to strain of the concavo-convex shape surface defect having a size in a range of 0.5 to 6 μm. The signal is magnetic flux leaking from the ferromagnetic metal to which magnetic flux is applied. A detecting apparatus incorporates a magnetizer for magnetizing a ferromagnetic metal and a plurality of magnetic sensors arranged in the direction perpendicular to a traveling direction of the ferromagnetic metal to sense a signal attributed to strain of a concavo-convex shape surface defect having a size in a range of 0.5 to 6 μm.

摘要翻译： 一种用于检测存在于强磁性金属物体上的凹凸形状表面缺陷的检测方法，包括感测归因于具有0.5至6μm范围内的尺寸的凹凸形状表面缺陷的应变的信号。 该信号是从施加磁通的铁磁金属泄漏的磁通量。 一种检测装置包括用于磁化铁磁金属的磁化器和沿与铁磁金属的行进方向垂直的方向布置的多个磁性传感器，以感测归因于具有尺寸的凹凸形状表面缺陷的信号 范围为0.5〜6μm。

公开(公告)号：US09008975B2

公开(公告)日：2015-04-14

申请号：US12935307

申请日：2009-03-27

申请人： Takahiro Koshihara ,  Hiroharu Kato ,  Akio Nagamune

发明人： Takahiro Koshihara ,  Hiroharu Kato ,  Akio Nagamune

IPC分类号： G01N21/00 ,  G01N21/892 ,  G01N27/83 ,  G01N21/89

CPC分类号： G01N21/892 ,  G01N21/8922 ,  G01N27/83 ,  G01N2021/8918

摘要： An apparatus for detecting periodic defects includes a sensor that obtains signals to evaluate properties of an area having a length longer than an expected defect period; a small area selector that separates small areas whose area length is shorter than that of the area so that all adjacent distance intervals are equal in a periodic defect arrangement direction, and selecting signals corresponding to the positions of the plurality of small areas from outputs from the sensor; an evaluation index calculator that calculates a similarity evaluation index between signal patterns among signals selected by the small area selector; a set value changer that changes the positions of the small areas and the distance interval, and repeating computational processings of the small area selector and the evaluation index calculator; and a period judgment device that judges the distance interval as a period when the evaluation index is higher than a value.

摘要翻译： 用于检测周期性缺陷的装置包括：传感器，其获得用于评估长度大于预期缺陷周期的区域的特性的信号; 区域选择器，其区域长度小于所述区域的小区域，使得周期性缺陷排列方向上的所有相邻距离间隔相等，并且从所述多个小区域的输出中选择与所述多个小区域的位置相对应的信号 传感器; 评估指标计算器，计算由小区域选择器选择的信号之间的信号模式之间的相似度评估指标; 改变小区域和距离间隔的位置的设定值改变器，并且重复小区域选择器和评估指标计算器的计算处理; 以及周期判断装置，其将所述距离间隔判定为所述评价指标高于所述值的期间。

公开(公告)号：US08466673B2

公开(公告)日：2013-06-18

申请号：US12667437

申请日：2008-08-20

申请人： Takahiro Koshihara ,  Hiroharu Kato ,  Akio Nagamune

发明人： Takahiro Koshihara ,  Hiroharu Kato ,  Akio Nagamune

IPC分类号： G01N27/82

CPC分类号： G01B7/34 ,  G01N27/83

摘要： A detection method for detecting a concavo-convex shape surface defect existing on a ferromagnetic metal object including sensing a signal attributed to strain of the concavo-convex shape surface defect having a size in a range of 0.5 to 6 μm. The signal is magnetic flux leaking from the ferromagnetic metal to which magnetic flux is applied. A detecting apparatus incorporates a magnetizer for magnetizing a ferromagnetic metal and a plurality of magnetic sensors arranged in the direction perpendicular to a traveling direction of the ferromagnetic metal to sense a signal attributed to strain of a concavo-convex shape surface defect having a size in a range of 0.5 to 6 μm.

摘要翻译： 一种用于检测存在于铁磁金属物体上的凹凸形状表面缺陷的检测方法，包括感测归因于具有0.5至6μm范围内的尺寸的凹凸形状表面缺陷的应变的信号。 该信号是从施加磁通的铁磁金属泄漏的磁通量。 一种检测装置包括用于磁化铁磁金属的磁化器和沿与铁磁金属的行进方向垂直的方向布置的多个磁性传感器，以感测归因于具有尺寸的凹凸形状表面缺陷的信号 范围为0.5至6 mum。

公开(公告)号：US6057684A

公开(公告)日：2000-05-02

申请号：US860122

申请日：1997-06-27

申请人： Yoshihiro Murakami ,  Akio Nagamune ,  Hiroharu Kato ,  Junichi Yotsuji ,  Kozo Maeda ,  Kenichi Iwanaga

发明人： Yoshihiro Murakami ,  Akio Nagamune ,  Hiroharu Kato ,  Junichi Yotsuji ,  Kozo Maeda ,  Kenichi Iwanaga

IPC分类号： G01N27/82 ,  G01N27/90 ,  G01N27/83 ,  G01R33/12

CPC分类号： G01N27/82 ,  G01N27/9026 ,  G01N27/9033

摘要： A magnetic sensor in which magnetic leakage flaw detection can be performed with high accuracy without so reducing liftoff, and a magnetic flaw detection method and apparatus to which the magnetic sensor is applied. The magnetic sensor 50 for detecting magnetic flux generated due to a defect portion of a magnetized subject to be inspected has an E-shaped core 51 having magnetic poles (51a, 51b and 51c) arranged in the neighborhood of a steel plate (13) to be inspected, and a search coil (52) wound on the center magnetic pole (51b) of the E-shaped core for detecting the magnetic flux. An external magnetic field floating in the circumference of the E-shaped magnetic sensor passes through the opposite side magnetic poles (51a and 51c) of the E-shaped core 51 but does not cross the center magnetic pole (51b) of the E-shaped core. Accordingly, no voltage due to the external magnetic field is induced in the search coil (52), so that only the magnetic flux caused by the defect portion is detected. Accordingly, the directivity with respect to the external magnetic field is improved so that the generation of a noise voltage due to the external magnetic field is suppressed and S/N at the time of flaw detection is improved.

摘要翻译： PCT No.PCT / JP96 / 03193 Sec。 371日期：1997年6月27日 102（e）日期1996年6月27日PCT提交1996年10月31日PCT公布。 第WO97 / 16722号公报 日期1997年5月9日一种磁传感器，其中可以高精度地进行磁泄漏探伤，而不需要减小剥离，以及应用磁传感器的磁性探伤方法和装置。 用于检测由于待检查的被磁化对象的缺陷部分产生的磁通的磁传感器50具有设置在钢板（13）附近的磁极（51a，51b和51c）的E形磁芯51， 以及卷绕在用于检测磁通量的E形磁芯的中心磁极（51b）上的搜索线圈（52）。 在E形磁性传感器的周围浮动的外部磁场通过E形磁芯51的相对侧的磁极（51a，51c），但不穿过E形磁铁51的中心磁极（51b） 核心。 因此，在搜索线圈（52）中没有感应到由于外部磁场引起的电压，从而仅检测到由缺陷部分引起的磁通量。 因此，提高了相对于外部磁场的方向性，从而抑制了由外部磁场引起的噪声电压的产生，并且提高了缺陷检测时的S / N。

公开(公告)号：US08760155B2

公开(公告)日：2014-06-24

申请号：US13059467

申请日：2009-08-26

申请人： Hiroharu Kato ,  Akio Nagamune ,  Toshito Takamiya

发明人： Hiroharu Kato ,  Akio Nagamune ,  Toshito Takamiya

IPC分类号： G01N27/72

CPC分类号： G01R33/1223 ,  C21D8/12 ,  G01N27/82 ,  G01R33/04 ,  H01F1/16 ,  H01F7/20 ,  H01F13/00

摘要： A magnetism measuring method includes magnetizing a magnetic material with a direct current to a rotational magnetization region, performing an alternate current excitation in a direction having a component orthogonal to a direction of the direct current magnetization, and measuring a component of an alternate current magnetic field generated by an interaction with the magnetic material in a direction orthogonal to the direction of the direct current magnetization.

摘要翻译： 一种磁测量方法，包括：将具有直流电流的磁性材料磁化到旋转磁化区域，在具有与直流磁化方向正交的分量的方向上进行交流励磁，以及测量交流磁场的分量 在与直流磁化方向正交的方向上与磁性材料的相互作用产生。

公开(公告)号：US20110148405A1

公开(公告)日：2011-06-23

申请号：US13059467

申请日：2009-08-26

申请人： Hiroharu Kato ,  Akio Nagamune ,  Toshito Takamiya

发明人： Hiroharu Kato ,  Akio Nagamune ,  Toshito Takamiya

IPC分类号： G01R33/02 ,  C22C38/00

CPC分类号： G01R33/1223 ,  C21D8/12 ,  G01N27/82 ,  G01R33/04 ,  H01F1/16 ,  H01F7/20 ,  H01F13/00

摘要： A magnetism measuring method includes magnetizing a magnetic material with a direct current to a rotational magnetization region, performing an alternate current excitation in a direction having a component orthogonal to a direction of the direct current magnetization, and measuring a component of an alternate current magnetic field generated by an interaction with the magnetic material in a direction orthogonal to the direction of the direct current magnetization.

摘要翻译： 一种磁测量方法，包括：将具有直流电流的磁性材料磁化到旋转磁化区域，在具有与直流磁化方向正交的分量的方向上进行交流励磁，以及测量交流磁场的分量 在与直流磁化方向正交的方向上与磁性材料的相互作用产生。

公开(公告)号：US5329467A

公开(公告)日：1994-07-12

申请号：US676080

申请日：1991-03-27

申请人： Akio Nagamune ,  Kouichi Tezuka ,  Isamu Komine

发明人： Akio Nagamune ,  Kouichi Tezuka ,  Isamu Komine

IPC分类号： C21C5/46 ,  G01F23/284 ,  G01F23/292 ,  G01S13/32 ,  G01S13/88 ,  G01S17/32 ,  G01B11/14

CPC分类号： G01S17/32 ,  C21C5/4673 ,  G01F23/292 ,  G01S13/325 ,  G01S13/88

摘要： A distance measuring method and an apparatus therefor, in which used are first and second pseudo random signals which are equal to each other in pattern but slight different from each other in frequency. A first time-series pattern obtained by multiplying the first pseudo random signal by the second pseudo random signal is generated, laser light intensity-modulated with the first pseudo random signal is radiated to a target, the light reflected from the target is received, and a intensity change of the received reflected-light is converted into an electric signal. A second time-series pattern is obtained by multiplying the electric signal as a reception signal with the second pseudo random signal. The distance to the target is measured by calculating the time difference between the first and second time-series patterns.

摘要翻译： 一种距离测量方法及其装置，其中使用的是第一和第二伪随机信号，其在图案上彼此相等，但频率彼此稍微不同。 产生通过将第一伪随机信号乘以第二伪随机信号而获得的第一时间序列图案，利用第一伪随机信号强度调制的激光照射到目标，从目标反射的光被接收， 所接收的反射光的强度变化被转换为电信号。 通过将作为接收信号的电信号与第二伪随机信号相乘来获得第二时间序列图案。 通过计算第一和第二时间序列图案之间的时间差来测量与目标的距离。

公开(公告)号：US5918662A

公开(公告)日：1999-07-06

申请号：US718530

申请日：1996-10-08

申请人： Koichi Tezuka ,  Akio Nagamune ,  Hiroshi Maeda ,  Hiroaki Miyahara ,  Atsushi Ohta ,  Akira Ohsumi

发明人： Koichi Tezuka ,  Akio Nagamune ,  Hiroshi Maeda ,  Hiroaki Miyahara ,  Atsushi Ohta ,  Akira Ohsumi

IPC分类号： B22D11/16 ,  B22D11/18 ,  B22D11/08 ,  B22D11/20

CPC分类号： B22D11/161 ,  B22D11/18 ,  B22D11/181

摘要： A continuous-casting operation controlling method and apparatus in which: the molten-bath level of molten steel in a mold is detected in a period of from the time point just after the start of injection of the molten steel to the time point when the molten-bath level reaches a molten-bath level for the steady-state operation; and the quantity of discharge of the molten steel is controlled appropriately on the basis of the detected molten-bath level to thereby make it possible to start drawing-out of casting automatically. The molten-bath level is measured continuously by an electrode type molten-bath level meter, so that the molten-bath level ascending rate is obtained on the basis of the change of the molten-bath level. The flow rate of the molten steel discharged from a tundish is adjusted on the basis of the deviation of the molten-bath level ascending rate from a reference rate. When the molten-bath level then reaches a predetermined reference level lower than the molten-bath level for the steady-state operation, drawing-out of casting is started.

摘要翻译： PCT No.PCT / JP96 / 00458 Sec。 371日期1996年10月8日第 102（e）日期1996年10月8日PCT PCT 1996年2月28日PCT公布。 公开号WO96 / 26800 PCT 日期1996年9月6日一种连续铸造操作控制方法和装置，其中：从刚刚开始注入钢水之后的时间点检测模具中的钢水熔融水平 当熔池水位达到稳态运行的熔池水位时， 并且基于检测到的熔池水平适当地控制钢水的排出量，从而能够自动开始铸造。 通过电极型熔池液位计连续测量熔池水平，从而基于熔池水平的变化获得熔池液面上升速率。 基于熔池上升速率与参考速率的偏差来调节从中间包排出的钢水的流量。 当熔池水平达到低于用于稳态操作的熔池水平的预定参考水平时，开始铸造。

公开(公告)号：US5507854A

公开(公告)日：1996-04-16

申请号：US353888

申请日：1994-12-12

申请人： Takeo Yamada ,  Masao Sugawara ,  Kouichi Matsumoto ,  Akio Nagamune ,  Kouichi Tezuka

发明人： Takeo Yamada ,  Masao Sugawara ,  Kouichi Matsumoto ,  Akio Nagamune ,  Kouichi Tezuka

IPC分类号： G01S11/00 ,  B22D11/20 ,  C21C5/30 ,  C21C5/46 ,  G01F23/24 ,  G01F23/284 ,  C21C1/04

CPC分类号： B22D11/201 ,  G01F23/24 ,  G01F23/245 ,  C21C5/30 ,  C21C5/4673

摘要： First and second electrodes are inserted into molten metal. A first pseudo random signal is transmitted to the first electrode, and at the same time the first pseudo random signal and a second pseudo random signal which has the same pattern as the first pseudo random signal but which is slightly different in frequency from the first pseudo random signal are multiplied by each other in a first multiplier to thereby calculate a first product value. A signal obtained from the second electrode and the second pseudo random signal are multiplied by each other in a second multiplier to thereby obtain a second product value. The displacement of the molten metal is calculated from the time difference between maximum correlation values respectively appearing in time series patterns of the first and second product values.

摘要翻译： 将第一和第二电极插入熔融金属中。 第一伪随机信号被发送到第一电极，并且同时具有与第一伪随机信号相同的图案的第一伪随机信号和第二伪随机信号，但是频率与第一伪随机信号的第一伪随机信号略有不同 随机信号在第一乘法器中彼此相乘，从而计算第一乘积值。 从第二电极和第二伪随机信号获得的信号在第二乘法器中彼此相乘，从而获得第二乘积值。 从分别出现在第一和第二乘积值的时间序列图案中的最大相关值之间的时间差计算熔融金属的位移。