螢光磁粉探傷における磁粉適用条件の検討

概要

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Detecting accuracy of magnetic powder testing is considerably varied according to conditions applying fluorescent magnetic powders and magnetizing materials and therefore, in order to clarify the optimum condition, various applying conditions were examined using samples with artifical defects. As the results, there was proposed a good method pouring the wet magnetic powders and photo-electric detecting method we clarified(1) steel grades (magnetic property)(2) size of magnetic powder and bath concentration(3) magnetizing current and also(4) changing state of adhesiveness found on each sample.At the same time we were also able to calrify the optimum magnetizing state that makes the noise in signal minimum in the detector. It seems to be helpful as the judging data to determine testing condtion in general-fluroescent powder testing.
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