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    METHOD FOR SUBJECTING STRUCTURE FORM OF WELD TO IMAGING AND DEVICE THEREFOR
    35.
    发明公开
    METHOD FOR SUBJECTING STRUCTURE FORM OF WELD TO IMAGING AND DEVICE THEREFOR 审中-公开
    PROCESS FOR A结构的图象要被焊接FORM及其装置

    公开(公告)号：EP2570806A4

    公开(公告)日：2015-09-30

    申请号：EP11780729

    申请日：2011-05-10

    Applicant: JFE STEEL CORP

    Inventor： MATSUI YUTAKA ,  IIZUKA YUKINORI ,  TAKADA HAJIME ,  OZEKI TAKAFUMI

    IPC: G01N29/06 ,  G01B17/00 ,  G01N29/44

    CPC classification number: G01B5/0037 ,  G01B17/06 ,  G01N29/043 ,  G01N29/265 ,  G01N2291/267 ,  G06T7/0004 ,  G06T2207/10132 ,  G06T2207/30152

    Abstract: A microstructure form of a welding area is quickly and accurately (or clearly) imaged in a nondestructive inspection. Specifically, while a cross section of a test object S orthogonal to a welding direction is being scanned with an ultrasonic beam B, a reflected signal from the inside of the test object is received. On the basis of the received reflected signal, the scanned cross section is imaged to inspect a microstructure of a welding area 2. In imaging the welding area, a reflected wave from the microstructure of the welding area is enhanced by subtracting a moving average waveform Ra at an average score m to remove a slowly varying component of the received signal, extracting the reflected signal from the microstructure of the welding area, and amplifying only the extracted reflected signal. Alternatively, a reflected wave from the microstructure of the welding area is enhanced by scanning a cross section of the test object orthogonal to the welding direction with a focused ultrasonic beam at a plurality of different positions in the welding direction, imaging the scanned cross sections on the basis of the resulting ultrasonic received signals, superimposing a plurality of images obtained by scanning at the plurality of positions in the welding direction, and retaining a maximal value of superimposed pixels.

    PIPE ULTRASONIC FLAW DETECTING APPARATUS AND ULTRASONIC FLAW DETECTING METHOD
    37.
    发明公开
    PIPE ULTRASONIC FLAW DETECTING APPARATUS AND ULTRASONIC FLAW DETECTING METHOD 有权
    超声漏洞检测设备和超声波漏洞检测方法TUBES

    公开(公告)号：EP1953544A4

    公开(公告)日：2014-07-02

    申请号：EP06833440

    申请日：2006-11-21

    Applicant: JFE STEEL CORP

    Inventor： IIZUKA YUKINORI

    IPC: G01N29/04 ,  G01N29/24

    CPC classification number: G01N29/07 ,  G01N29/221 ,  G01N2291/0234 ,  G01N2291/0421 ,  G01N2291/0422 ,  G01N2291/0428 ,  G01N2291/044 ,  G01N2291/106 ,  G01N2291/2634 ,  G01N2291/2675

    Abstract: Disclosed are an ultrasonic testing system and an ultrasonic testing technique for a pipe member capable of detecting minute flaws of several hundreds of microns or less located at positions in the wall thickness inside portion of a welded portion of a seam-welded pipe and the like without omission and further easily setting optimum conditions when the size of the pipe is changed. A transmitting beam, which is focused to the welded portion at an oblique angle, is transmitted using a part of the group of transducer elements of a linear array probe as a group of transducer elements for transmission, a receiving beam, which is focused at the focusing position of the transmitting beam at an oblique angle, is formed using the transducer elements of a portion different from the above group of transducer elements for transmission as a group of transducer elements for reception, and a flaw echo is received from the welded portion.

    STEEL-PIPE SURFACE INSPECTION METHOD, SURFACE INSPECTION DEVICE, MANUFACTURING SYSTEM, DEFECT GENERATION-LOCATION SPECIFYING METHOD, AND MANUFACTURING METHOD
    39.
    发明公开
    STEEL-PIPE SURFACE INSPECTION METHOD, SURFACE INSPECTION DEVICE, MANUFACTURING SYSTEM, DEFECT GENERATION-LOCATION SPECIFYING METHOD, AND MANUFACTURING METHOD 审中-公开
    VERFAHREN ZUROBERFLÄCHENPRÜFUNGVON STAHLROHREN，OBERFLÄCHENINSPEKTIONSVORRICHTUNG，HERSTELLUNGSSYSTEM，VERFAHREN ZUR SPEZIFIZIERUNG VON DEFEKTERZEUGENDEN STELLEN UND HERSTELLUNGSVERFAHREN

    公开(公告)号：EP3118612A4

    公开(公告)日：2017-09-20

    申请号：EP15761351

    申请日：2015-03-03

    Applicant: JFE STEEL CORP

    Inventor： IIZUKA YUKINORI ,  ONO HIROAKI ,  KODAMA TOSHIFUMI ,  OGAWA AKIHIRO

    IPC: G01N25/72 ,  G01J5/48

    CPC classification number: G01N21/8806 ,  G01J5/48 ,  G01N21/359 ,  G01N21/93 ,  G01N21/95 ,  G01N25/72

    Abstract: A control device 12 acquires a self-luminous image of a steel pipe captured when the steel pipe is hot, corrects the self-luminous image by uniformizing luminance variation in the circumferential direction of the self-luminous image, and detects a surface defect based on the corrected self-luminous image. The self-luminous image is preferably captured in a position behind a reducer. The diameter reduction rate applied by the reducer for the steel pipe is preferably equal to or greater than 110%. The luminance variation in the circumferential direction of the self-luminous image is uniformized by using a luminance distribution in the circumferential direction where the luminance in the longitudinal direction of the steel pipe is averaged. The luminance variation in the circumferential direction of the self-luminous image may be uniformized by using a difference in the luminance between a plurality of self-luminous images captured with the position in the longitudinal direction of the steel pipe changed.

    Abstract translation: 控制装置12取得钢管热时拍摄的钢管的自发光图像，通过使自发光图像的周向的亮度变化均匀化来修正自发光图像，基于 校正后的自发光图像。 自发光图像优选被捕获在减速器后面的位置。 减径机对钢管施加的缩径率优选为110％以上。 通过使用钢管长度方向的亮度平均后的圆周方向的亮度分布，使自发光图像的周向亮度变化均匀化。 通过使用在钢管的长度方向上的位置改变的情况下拍摄的多个自发光图像之间的亮度差异，可以使自发光图像在圆周方向上的亮度变化均匀。

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