ELECTROMAGNETIC FLAW DETECTOR

摘要

FIELD: instruments, non- destructive methods for checking characteristics of magnetic field and product quality. SUBSTANCE: magnetic unit 2 has section of identical pair-pole permanent magnets which are located in housing 1 and are shaped as parallelograms. Continuous winding 3 is wound on section magnets 2 in alternating order. Sections which are connected electrically to one another and detector are mounted for reciprocal and rotational movement inside checked product. EFFECT: increased selectivity and increased resolution. 2 cl, 2 dwg