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    • 93. 发明专利
    • Method for evaluating carburization depth and method for evaluating lifetime of pipe
    • 渗透深度评估方法及评估管道寿命的方法
    • JP2013164282A
    • 2013-08-22
    • JP2012026149
    • 2012-02-09
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • HARADA TERUMASAIMAMICHI TETSURO
    • G01N27/90
    • PROBLEM TO BE SOLVED: To provide a method for evaluating a carburized depth that easily and highly accurately evaluates the occurrence/non-occurrence and the depth of carburization, and a method for evaluating a lifetime using the evaluation result by the method for evaluating the carburization depth.SOLUTION: A carburization depth evaluation method according to the present invention includes the steps of: creating Lissajous waveform on the basis of an impedance variation of a probe of an eddy current flaw detection test device; identifying an amplitude and a phase of the Lissajous waveform; and previously preparing a map formed by associating a relationship between a carburization depth and the amplitude and phase of the Lissajous waveform, comparing the identified amplitude and phase, and obtaining the carburization depth.
    • 要解决的问题:提供一种用于评价渗碳深度的方法,该渗碳深度容易且高精度地评估渗碳的发生/不发生和深度,以及使用评估结果评估渗碳的方法的评估结果的方法 根据本发明的渗碳深度评估方法包括以下步骤:基于涡流探伤测试装置的探头的阻抗变化产生李萨如波形; 识别Lissajous波形的振幅和相位; 并且先前准备通过将渗碳深度与利萨如斯波形的振幅和相位之间的关系相关联而形成的图,比较所识别的振幅和相位,并获得渗碳深度。
    • 94. 发明专利
    • Defect evaluation apparatus of defect evaluation method and the tubular body of the tubular body
    • JP5269564B2
    • 2013-08-21
    • JP2008305322
    • 2008-11-28
    • 非破壊検査株式会社
    • 晋 龍王雅司 森晃史 佐々木義之 今井
    • G01N27/90
    • PROBLEM TO BE SOLVED: To provide a method and an apparatus for evaluating a defect of a tubular object, capable of not only speedily detecting even the defect whose defective volume is small, but also identifying inner and outer surfaces having the defect. SOLUTION: The method employs a sensor equipped with a DC magnetizing coil 11 and an eddy-current flaw detection coil 12. In the method, an eddy-current flaw detection is carried out for a test tube which is or is equivalent of the tubular object 100 and has a plurality of kinds of simulated defects previously disposed on its inner and outer surfaces 101, 102, while DC magnetizing the test tube by using the sensor, and then the intensity of above DC magnetization and a test frequency of the eddy-current flaw detection coil 12 are selected so that the simulated defects can be detected, and the simulated defects located on any of the inner and outer surfaces 101, 102 of the tubular object 100 can be identified, by using both effects of a magnetic permeability change and an occurrence of eddy current E, E', and then the sensor is inserted into the tubular object 100, and the eddy-current flaw detection is carried out, while DC magnetizing the tubular object 100 in the condition of the selected DC magnetization intensity and test frequency. Which one of the inner and outer surfaces 101, 102 of the tubular object 100 has the defect is identified by using a detection signal of the eddy-current flaw detection coil 12. COPYRIGHT: (C)2010,JPO&INPIT
    • 97. 发明专利
    • Method for evaluating catalytic pipe for natural gas reformer
    • 用于评估天然气改性剂催化管的方法
    • JP2013120183A
    • 2013-06-17
    • JP2011269774
    • 2011-12-09
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • MORIOKA SHINYA
    • G01N17/00G01N27/90
    • G01N27/90
    • PROBLEM TO BE SOLVED: To provide a method for evaluating a catalytic pipe for a natural gas reformer capable of comparatively easily evaluating the remaining life of the entire catalytic pipe comprising a catalytic pipe body, a short piece and a pigtail.SOLUTION: Temperatures of a plurality of catalytic pipes are measured S1, an evaluation object is selected on the basis of temperature measurement results S2, the swelling rates of the short piece and the pigtail constituting the catalytic pipe selected as the evaluation object are calculated S3, the swelling rate of the catalytic pipe body constituting the catalytic pipe of the evaluation object is calculated when the swelling rates of the short piece and the pigtail are equal to or more than a reference value S6, and the remaining life of the catalytic pipe is evaluated by a replica method S9 to S14 in a case when the swelling rate of the catalytic pipe body is smaller than the reference value S7 and when a measurement value obtained by performing eddy current testing is smaller than the reference value S8.
    • 解决问题的方法:提供一种能够比较容易地评价包含催化管体,短片和尾纤的整个催化管的剩余寿命的天然气重整器的催化管的评价方法。 < P>解决方案:测量多个催化管的温度S1,基于温度测量结果S2选择评估对象,构成作为评价对象的催化管的短片和尾纤的溶胀速率为 计算S3时,当短片和尾纤的溶胀率等于或大于参考值S6时,计算构成评价对象的催化管的催化管体的溶胀率,催化管的剩余寿命 在催化管体的膨胀率小于基准值S7的情况下,以及当通过进行涡流试验得到的测定值小于基准值S8的情况下,通过复制方式S9〜S14来评价管道。 版权所有(C)2013,JPO&INPIT
    • 99. 发明专利
    • Surface defect detection apparatus
    • 表面缺陷检测装置
    • JP2013088396A
    • 2013-05-13
    • JP2011231900
    • 2011-10-21
    • Jfe Steel CorpJfeスチール株式会社
    • IWATA TERUHISAYOTSUTSUJI JUNICHINAKAMURA KOICHIYUGE KEITOKU
    • G01N27/90
    • PROBLEM TO BE SOLVED: To provide a surface defect detection apparatus capable of suppressing reduction of surface defect detection accuracy caused by dead weight drop, warp or the like of a tip part or a tail end part of a non-continuous plate-like test material.SOLUTION: In the surface defect detection apparatus for detecting an unopened defect existing on the front and rear surfaces of the non-continuous plate-like test material in conveyance by using an E-type eddy current sensor including an excitation coil and two detection coils, the E-type eddy current sensor is configured so that the two detection coils are arrayed in a direction orthogonal to a conveyance direction of the test material, the E-type sensor is stored in a sensor box, and auxiliary rolls are arranged between conveyance rolls arranged before and after the sensor box.
    • 要解决的问题:提供一种表面缺陷检测装置,其能够抑制由非连续板状部件的顶端部或尾端部的自重下降,翘曲等引起的表面缺陷检测精度的降低, 像测试材料。 解决方案:在通过使用包括励磁线圈的E型涡流传感器和两个用于检测非连续板状测试材料的前后表面上存在的未打开缺陷的表面缺陷检测装置中, 检测线圈,E型涡电流传感器被构造为使得两个检测线圈沿与测试材料的传送方向正交的方向排列,E型传感器被存储在传感器盒中,辅助辊布置 在传感器盒之前和之后布置的输送辊之间。 版权所有(C)2013,JPO&INPIT
    • 100. 发明专利
    • Eddy current detection method and eddy current detection apparatus
    • EDDY电流检测方法和EDDY电流检测装置
    • JP2013053984A
    • 2013-03-21
    • JP2011193557
    • 2011-09-06
    • Jtekt Corp株式会社ジェイテクト
    • ITO AKIRAAZUMA TAKAYUKI
    • G01N27/90G01R17/12
    • PROBLEM TO BE SOLVED: To provide an eddy current detection method and an eddy current detection apparatus capable of accurately detecting an eddy current even when temperature of an excitation/detection coil is changed.SOLUTION: When a virtual object W corresponding to a measurement object is used as an object and temperature of an excitation/detection coil 16 is changed, an approximate straight line A1 expressing behavior of an inter-middle point potential difference V of an inductance bridge circuit on a complex plane is calculated. Then, an inclination angle θa of the approximate straight line A1 from a real number axis or an imaginary number axis on the complex plane is calculated. Then, the actual measurement object W is used as an object and the coordinates (Re1, Im1) of the inter-middle point potential difference V on the complex plane are calculated; rotational coordinate conversion for reversely rotating the inclination angle θa to the coordinates (Re1, Im1) is performed; and a real number component Re2 or an imaginary number component Im2 of the converted coordinates is calculated. Then the real number component Re2 or the imaginary number component Im2 is outputted as an eddy current correlation value.
    • 要解决的问题:即使在激励/检测线圈的温度改变时,也能够提供能够精确地检测涡电流的涡电流检测方法和涡流检测装置。 解决方案:当将对应于测量对象的虚拟对象W用作对象并且激励/检测线圈16的温度改变时,表示一个中间点电位差V的行为的近似直线A1 计算复平面上的电感桥电路。 然后,计算出来自复数平面上的实数轴或虚数轴的近似直线A1的倾斜角θa。 然后,将实际测量对象W用作对象,并且计算复平面上的中间点电位差V的坐标(Re1,Im1); 执行用于使倾斜角度θa与坐标(Re1,Im1)反向旋转的旋转坐标转换; 并且计算转换坐标的实数分量Re2或虚数分量Im2。 然后输出实数分量Re2或虚数分量Im2作为涡流相关值。 版权所有(C)2013,JPO&INPIT