公开(公告)号：EP2876437A4

公开(公告)日：2016-03-30

申请号：EP13820625

申请日：2013-07-11

Applicant: JFE STEEL CORP

Inventor： OZEKI TAKAFUMI ,  IIZUKA YUKINORI

IPC: G01N29/04 ,  G01B17/06 ,  G01N29/07 ,  G01N29/28

CPC classification number: G01B17/06 ,  G01N29/043 ,  G01N29/07 ,  G01N29/28 ,  G01N2291/0422 ,  G01N2291/106 ,  G01N2291/2634 ,  G01N2291/2675

Abstract: A measuring-point setting unit 51 sets an arbitrary measuring point near a weld portion inside of steel material and assumes a virtual reflecting surface that includes the measuring point and is parallel to a weld line direction. An array-control calculating unit 52 transmits ultrasonic waves of a shear wave mode satisfying an arbitrary expression and focusing onto the measuring point via a coupling medium at a predetermined incident angle with respect to the virtual reflecting surface. An echo-height extracting unit 53 detects reflected waves of the transmitted ultrasonic waves at a boundary between a base metal portion and the weld portion. A controller 5 evaluates the shape of the weld portion based on the reflected waves.

公开(公告)号：EP2578712A4

公开(公告)日：2015-04-29

申请号：EP11786795

申请日：2011-05-23

Applicant: JFE STEEL CORP

Inventor： ARATANI MASATOSHI ,  KAWABATA YOSHIKAZU ,  OKABE TAKATOSHI ,  IIZUKA YUKINORI ,  HORI HIROMICHI ,  GUNJI MAKIO ,  IWAZAKI KENICHI

IPC: C22C38/00 ,  C21D9/08 ,  C21D9/28 ,  C21D9/50 ,  C22C38/06 ,  C22C38/58

CPC classification number: F16L9/02 ,  B23K9/00 ,  B23K11/0873 ,  C21D9/08 ,  C21D9/50 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14

公开(公告)号：EP2123389A4

公开(公告)日：2015-04-08

申请号：EP08711419

申请日：2008-02-08

Applicant: JFE STEEL CORP

Inventor： INOUE TOMOHIRO ,  SAKASHITA SHIGETO ,  YUASA DAIJIRO ,  YOKOYAMA HIROYASU ,  KENMOCHI KAZUHITO ,  IIZUKA YUKINORI

IPC: B23K11/08 ,  B21C37/083 ,  B21C51/00 ,  B23K11/25 ,  B23K11/34 ,  B23K33/00 ,  G01B11/25

CPC classification number: G01B11/25 ,  B21C37/08 ,  B21C37/0826 ,  B21C37/083 ,  B23K11/0873 ,  B23K11/252 ,  B23K11/34 ,  B23K33/006 ,  B23K2201/06 ,  B23K2203/04

公开(公告)号：EP2124046A4

公开(公告)日：2014-12-03

申请号：EP07744097

申请日：2007-05-18

Applicant: JFE STEEL CORP

Inventor： IIZUKA YUKINORI ,  KENMOCHI KAZUHITO ,  YOKOYAMA HIROYASU ,  INOUE TOMOHIRO ,  SAKASHITA SHIGETO

IPC: G01N29/04 ,  G01N29/06 ,  G01N29/265 ,  G01N29/44

CPC classification number: G01N29/265 ,  G01N29/043 ,  G01N29/0645 ,  G01N29/449 ,  G01N2291/044 ,  G01N2291/056 ,  G01N2291/106 ,  G01N2291/2634 ,  G01N2291/2675 ,  Y10T29/49764 ,  Y10T29/49769 ,  Y10T29/49771

Abstract: According to the present invention, penetrators can be adequately determined as flaws. In particular, a welded zone 2 of a pipe 1 is subjected to ultrasonic flaw detection at least in a pipe axial direction, and the quality of the pipe is evaluated using observed values in units of a predetermined area in a pipe thickness direction and the pipe axial direction. The length of one side of the predetermined area is an ultrasound beam width or more and a pipe thickness or less. The quality of the pipe can be evaluated while shifting the predetermined area in the pipe axial direction by using an average value of the observed values within the predetermined area. The length of one side of the predetermined area can be made an ultrasound beam width or more and a pipe thickness or less.

公开(公告)号：EP2124045A4

公开(公告)日：2014-12-03

申请号：EP07744096

申请日：2007-05-18

Applicant: JFE STEEL CORP

Inventor： IIZUKA YUKINORI ,  KENMOCHI KAZUHITO ,  YOKOYAMA HIROYASU ,  INOUE TOMOHIRO ,  SAKASHITA SHIGETO

IPC: G01N29/04 ,  G01N29/12 ,  G01N29/26 ,  G01N29/44

CPC classification number: G01N29/12 ,  G01N29/043 ,  G01N29/262 ,  G01N2291/0289 ,  G01N2291/044 ,  G01N2291/106 ,  G01N2291/2634 ,  G01N2291/2675

Abstract: The present invention has a structure capable of detecting the scattered-type penetrator having oxides each with the size of several µm sparsely and widely dispersed. Specifically, the structure includes a wave transmission unit 6 for transmitting an ultrasonic wave to the welded surface of the welded portion 2 in a pipe axial direction of the pipe 1 such that the beam width of a transmission beam 8 is brought into a range from 0.5 mm to 2.5 mm, and a wave reception unit 7 for receiving at least a portion of the reflection wave (reception beam 9) at the welded surface. The wave transmission unit 6 and the wave reception unit 7 include transmission/reception units formed of different groups of transducer elements on at least one or more array probes 5 arranged in the circumferential direction of the pipe.

Abstract translation: 本发明具有能够检测具有疏散且广泛分散的几μm的尺寸的氧化物的散射型穿透器的结构。 具体地，该结构包括：波导传输单元6，用于在管1的管轴方向上向焊接部2的焊接面发送超声波，使得透射束8的光束宽度为0.5 以及用于接收焊接面的反射波（接收光束9）的至少一部分的波接收部7。 波发送单元6和波接收单元7包括在沿管的圆周方向布置的至少一个或多个阵列探针5上由不同组的换能器元件形成的发送/接收单元。

公开(公告)号：EP1707290A4

公开(公告)日：2007-04-04

申请号：EP04799884

申请日：2004-11-24

Applicant: JFE STEEL CORP

Inventor： IIZUKA YUKINORI ,  KUBOTA JUN ,  TSUTSUMI KOICHI

IPC: B22D11/16

CPC classification number: B22D11/16 ,  G01N2291/02881

Abstract: In steel continuous casting, the solidification completion position is accurately detected from only a measured value measured by a sensor without need for correction by driving a rivet into a cast piece. Specifically lateral ultrasonic sensors (6, 8) for transmitting a lateral ultrasonic wave into a cast piece (1) and receiving its reflected wave and longitudinal ultrasonic sensors (7, 9) for transmitting a longitudinal ultrasonic wave into the cast piece and receiving its reflected wave are installed at the same position of a continuous casting machine or at the same position in the direction of the width of the cast piece at two portions spaced in the casting direction. On the basis of the variations of the intensities of the received signals of the lateral ultrasonic sensors, the solidification completion potion (4) of the cast piece is detected to agree with the position where the lateral ultrasonic sensors are installed. The calculation formula for determining the solidification completion position from the propagation time of the longitudinal ultrasonic wave is corrected so that the solidification completion position calculated from the propagation time of the longitudinal ultrasonic wave at the time of detection may agree with the position where the lateral ultrasonic sensors are installed. After the correction, using the corrected calculation formula, the solidification completion position is determined from the propagation time of the longitudinal ultrasonic wave.

公开(公告)号：JP2013126669A

公开(公告)日：2013-06-27

申请号：JP2011276280

申请日：2011-12-16

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： ASANO KAZUYA ,  SHIMAMOTO HIROYUKI ,  IIZUKA YUKINORI

IPC: B22D11/16

Abstract: PROBLEM TO BE SOLVED: To provide a method for estimating the temperature of a slab which includes a step of estimating the solidification completion position of a slab in a continuous casting machine based on the temperature of the slab estimated in a temperature estimation step, and estimates the temperature of the slab with high precision.SOLUTION: An ultrasonic wave propagation time calculation section 102 estimates and measures the propagation time of ultrasonic waves in the thickness direction of the slab in the arrangement positions of ultrasonic wave sensors 14a, 14b by heat transfer calculation utilizing a heat transfer model. A temperature calculation section 101 estimates and measures the surface temperature of the slab in the arrangement position of a surface thermometer 15 by heat transfer calculation utilizing the heat transfer model. A parameter correction section 103 corrects the value of at least one parameter among a thermal conductivity included in the heat transfer model, a heat transfer coefficient between a heat removal mold and a solidification shell in a mold and the heat transfer coefficient of a secondary cooling zone so that the estimated value of the propagation time of the ultraviolet waves agrees with the measured value, and also, the estimated value of the surface temperature agrees with the measured value. A solidification completion position estimation section 104 estimates the temperature of the slab by heat transfer calculation utilizing the heat transfer model in which the parameters are corrected.

Abstract translation: 要解决的问题：提供一种用于估计板坯温度的方法，其包括基于在温度估计步骤中估计的板坯的温度来估计连续铸造机中的板坯的凝固完成位置的步骤 ，并以高精度估计板坯的温度。 解决方案：超声波传播时间计算部分102通过使用传热模型的热传递计算来估计和测量超声波传感器14a，14b的布置位置中的板坯的厚度方向上的超声波的传播时间。 温度计算部101通过使用传热模型的热传递计算来估计并测量表面温度计15的布置位置中的板坯的表面温度。 参数校正部分103校正传热模型中包括的热传导率中的至少一个参数的值，模具中的除热模具和固化壳体之间的传热系数以及二次冷却区域的传热系数 使得紫外线的传播时间的估计值与测量值一致，并且表面温度的估计值也与测量值一致。 凝固完成位置估计部104利用校正参数的传热模型，通过热传导计算来估计板坯的温度。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012141251A

公开(公告)日：2012-07-26

申请号：JP2011000852

申请日：2011-01-05

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： YOTSUTSUJI JUNICHI ,  IWATA TERUHISA ,  IIZUKA YUKINORI

IPC: G01N27/90

Abstract: PROBLEM TO BE SOLVED: To precisely detect a scab defect by preventing reduction in the SN ratio due to the formation noise of a metal specimen.SOLUTION: In a surface layer defect detection device 1, a plurality of E-type sensors 5 having an exciting coil A for generating an eddy current in a surface layer part of the metal specimen 4 and first and second detection coils B, B' for detecting a magnetic flux induced by the eddy current are arranged in the direction orthogonal to the conveyance direction of the metal specimen 4. Each E-type sensor 5 includes: a differential amplifier 8 which differentially amplifies the difference between a detection signal of the first detection coil B and a detection signal of the second detection coil B' to be output as a differential amplification signal; an amplified differential processing circuit 11 which outputs the difference in the differential amplification signal among the plurality of the E-type sensors 5 as the detection signal: and a discriminating means 17 which discriminates whether or not the scab defect exists based on the detection signal.

Abstract translation: 要解决的问题：通过防止由于金属试样的形成噪声导致的SN比的降低来精确地检测疤痕缺陷。 解决方案：在表面层缺陷检测装置1中，具有用于在金属试样4的表层部分产生涡流的励磁线圈A和第一和第二检测线圈B的多个E型传感器5， 用于检测由涡电流引起的磁通量的B'布置在与金属试样4的输送方向正交的方向上。每个E型传感器5包括：差分放大器8，差分放大器8差分放大检测信号 第一检测线圈B和作为差分放大信号输出的第二检测线圈B'的检测信号; 输出多个E型传感器5之间的差分放大信号的差异作为检测信号的放大差分处理电路11，以及基于检测信号来辨别是否存在疤痕缺陷的识别装置17。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012137410A

公开(公告)日：2012-07-19

申请号：JP2010290669

申请日：2010-12-27

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： ITO TOMOHIKO ,  IIZUKA YUKINORI ,  YOTSUTSUJI JUNICHI

IPC: G01S7/295 ,  G01S13/08

Abstract: PROBLEM TO BE SOLVED: To provide a scrap surface profile measurement method which properly measures a distance to the scrap surface stacked in a container to measure the surface profile of scrap in the container with high accuracy.SOLUTION: An electromagnetic wave distance measurement part 11 transmits electromagnetic waves with a beam width adjusted so as to radiate the spot nearly equal to or under the size of large scrap 21 of the scrap 21 in a container 2 onto the scrap 21 surface in the container 2, from an antenna 111 and receives the reflection waves with the antenna 111, thereby measuring a distance to the scrap 21 surface in the container 2.

Abstract translation: 要解决的问题：提供一种废料表面轮廓测量方法，其适当地测量到堆叠在容器中的废料表面的距离，以高精度测量容器中废料的表面轮廓。 解决方案：电磁波距离测量部分11发射具有调节光束宽度的电磁波，以将容器2中的废料21的大废料21的大致等于或小于大小的斑点辐射到废料21表面上 在容器2中，从天线111接收与天线111的反射波，从而测量与容器2中的废料21表面的距离。版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012159466A

公开(公告)日：2012-08-23

申请号：JP2011020936

申请日：2011-02-02

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： OZEKI TAKAFUMI ,  IIZUKA YUKINORI

IPC: G01N29/04

Abstract: PROBLEM TO BE SOLVED: To provide a metallographic structure measuring method and a metallographic structure measuring device capable of measuring interior micro-structures of a steel material by a nondestructive measurement by using ultrasonic waves.SOLUTION: A metallographic structure measuring method comprises the steps of: transmitting ultrasonic waves from an ultrasonic wave probe with respect to metal being as a material to be measured; measuring backscattering waves by using the ultrasonic waves being transmitted, of which a center wavelength at a portion to be measured is not greater than 5 times of a mean grain diameter of crystal grains and is not less than 5 times of a mean particle diameter of microparticles, in order to measure microparticles different from crystals in the material to be measured, or micro-structures and crystal grains by measuring the backscattering waves from an inside; removing backscattering wave components due to the crystal grains from the backscattering waves having been measured; extracting backscattering wave components due to the microparticles; and obtaining at least one of volume density of the microparticles, number density thereof and the mean particle diameter thereof from the backscattering wave components having been extracted due to the microparticles.

Abstract translation: 要解决的问题：提供一种能够通过使用超声波进行非破坏性测量来测量钢材的内部微结构的金相组织测量方法和金相结构测量装置。 解决方案：金相结构测量方法包括以下步骤：从超声波探针相对于作为待测材料的金属传输超声波; 通过使用被测量的一部分的中心波长不超过晶粒的平均粒径的5倍的正在透射的超声波测量反向散射波，并且不小于微粒的平均粒径的5倍 为了通过从内部测量反向散射波来测量与待测材料中的晶体不同的微粒或微结构和晶粒; 从已经测量的后向散射波中去除由于晶粒造成的反向散射波分量; 提取由于微粒引起的后向散射波分量; 并从由于微粒提取的后向散射波分量获得微粒的体积密度，数量密度和平均粒径中的至少一个。 版权所有（C）2012，JPO＆INPIT