Type magnetic particle flaw detector null in extremely

摘要

PURPOSE: To provide an interpolar magnetic particle inspection system in which the total weight can be reduced relatively to the amount of flux and the waterproofness can be enhanced while dissipating heat sufficiently from the coil while protecting the pole part of core against damage and making occurrence of the pointing of pole hard. ;CONSTITUTION: The interpolar magnetic particle inspection system comprises a coil 6 wound around a core 4. Since amorphous iron is employed as the material of the core 4, the required quantity of coil wire can be reduced drastically while keeping the total weight of core substantially constant. The inner insulating layer 15 employs a material having thermal conductivity higher than those of the outer insulating layers 18, 20. A thin protective plate 22 is applied to the end face of a pole 8 and a stainless steel pole protective band 24 is applied around the pole 8 so that the edge 24b thereof is substantially in flush with the outer face of the thin plate 22.;COPYRIGHT: (C)1995,JPO