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8 条记录 (耗时 0.015 秒)

    EDDY CURRENT FLAW DETECTION PROBE
    1.
    发明公开
    EDDY CURRENT FLAW DETECTION PROBE 有权
    涡流故障检测探头

    公开(公告)号：EP2406623A1

    公开(公告)日：2012-01-18

    申请号：EP10713254.0

    申请日：2010-03-11

    申请人： Sumitomo Chemical Company, Limited

    发明人： HASHIMOTO, Mitsuo ,  MORI, Hisakazu ,  SUETSUGU, Hidehiko ,  TADA, Toyokazu

    IPC分类号： G01N27/90

    CPC分类号： G01N27/902 ,  G01N27/9033 ,  G01N27/904

    摘要： An insertion type eddy current flaw detection probe that is capable of more accurately detecting flaws in magnetic tubes is provided. A method for inspecting magnetic tubes for flaws with high accuracy is also provided. A eddy current flaw detection probe comprises a cylindrical yoke (1), a plurality of detection coils (5) disposed around the central portion of the cylindrical yoke in the direction of a cylindrical axis thereof, first and second inner excitation coils (6) disposed on both sides of the plurality of detection coils in the direction of the cylindrical axis, and first and second permanent magnets (3, 4) disposed around the yoke on both sides of the first and second excitation coils in the direction of the cylindrical axis so that the direction of magnetizations thereof are parallel to the radial direction of the yoke and magnetic poles on the cylindrical yoke side thereof are different from each other.

    DEFECT MEASUREMENT METHOD, DEFECT MEASUREMENT DEVICE, AND TESTING PROBE
    6.
    发明公开
    DEFECT MEASUREMENT METHOD, DEFECT MEASUREMENT DEVICE, AND TESTING PROBE 审中-公开

    公开(公告)号：EP3336533A1

    公开(公告)日：2018-06-20

    申请号：EP16824195.8

    申请日：2016-06-15

    申请人： SUMITOMO CHEMICAL COMPANY LIMITED

    发明人： TADA, Toyokazu ,  SUETSUGU, Hidehiko

    IPC分类号： G01N27/82 ,  G01N27/90

    摘要： The present invention quickly carries out quantitative evaluation of a defect of a magnetic member. An inspection probe (100), which includes: a third magnet (4) polarized in a direction intersecting a counter surface facing a magnetic member; a Hall element (11) that detects a density of a magnetic flux passing through the third magnet (4) and the magnetic member, is used to apply, to an output signal from the Hall element (11), an evaluation algorithm which is selected according to whether a defective surface is a front surface or a back surface.

    METHOD FOR INSPECTING AN AUSTENITIC STAINLESS STEEL WELD
    8.
    发明公开
    METHOD FOR INSPECTING AN AUSTENITIC STAINLESS STEEL WELD 审中-公开
    PROCESS审查WITH奥氏体不锈钢的焊接

    公开(公告)号：EP2470893A1

    公开(公告)日：2012-07-04

    申请号：EP10812093.2

    申请日：2010-08-25

    申请人： Sumitomo Chemical Company, Limited

    发明人： TADA, Toyokazu ,  SUETSUGU, Hidehiko

    IPC分类号： G01N27/72 ,  G01N27/90

    CPC分类号： G01N27/9033

    摘要： An object of the present invention is to provide a method for inspecting the presence or absence of a foreign metallic material mixed into an austenitic stainless steel material weld with more satisfactory accuracy. The method for inspecting an austenitic stainless steel weld of the present invention is characterized by comprises performing eddy current test of a weld portion of an austenitic stainless steel using a probe comprising an excitation and inspection coil and a permanent magnet disposed inside the excitation and inspection coil, and inspecting the presence or absence of a foreign metallic material mixed into the weld portion, and is also characterized in that magnetic flux density of magnetic field formed by the permanent magnet is from about 0.3 to about 1.5 tesla.