| 摘要 |
FIELD: ultrasonic nondestructive tests of parts and materials; quality control of metallurgical industry rolled products. ^ SUBSTANCE: proposed transducer has case, cover, substrate, permanent magnets, and inductance coil. It is also provided with at least two annular permanent magnets tightly abutting against one another with their poles disposed on outer and inner side surfaces, at least one round permanent magnet mounted on one end of their butt-end surface whose like pole faces their inner poles, and cylindrical concentrator made of ferromagnetic material and mounted on same axis as round permanent magnet inside annular magnets for locking in height relative to inductance coil separated from concentrator with aid of high-permeability and low-conductivity spacer. ^ EFFECT: enhanced efficiency of transducer. ^ 1 cl, 4 dwg |
