2017 №04 (04) DOI of Article
2017 №04 (06)

Technical Diagnostics and Non-Destructive Testing 2017 #04
Technical Diagnostics and Non-Destructive Testing, №4, 2017 pp. 32-41

Comparison of diferent systems of magnetizing devices with constant magnets for magnetic particle testing

V. A. Troitskii, V. M. Gorbik, O. S. Borodai

E.O. Paton Electric Welding Institute of the NASU, 11 Kazimir Malevich Str., Kiev, 03150. E-mail: office@paton.kiev.ua

Typical designs of existing constant magnet magnetizing devices, used in magnetic-particle testing, are considered. The disadvantages of magnetizing devices with flexible connection of the poles by steel cable are noted  and the advantages of the devices, in which this connection is made by flexible pivot magnetic core (yoke), are shown. The results of research of magnetic flows distribution in the systems with cable and interpole yoke are presented. Specifications of serially produced magnetizing devices are also given.  Presented are the results of efficiency of flaw detection using magnetizing devices with pivot magnetic core. 5 Ref., 1 Tabl., 13 Fig.

Keywords: magnetic particle testing, magnetizing devices, constant magnet, magnetic flow, magnetic field, magnetic induction

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