ELECTROMAGNETIC INDUCTOR FOR THE QUALITY CONTROL OF THE PIPE WELDED JOINTS Russian patent published in 1995 - IPC

FIELD: defectoscopy. SUBSTANCE: inductor has two identical flaps. The coaxial ring winding in the shape of a braid with a loop over the articulated joint and with a parting on the flap jaws which is multiplug by the winding loop number, is placed in the notch on the inner surface of the flaps. The winding braid in the notch is fastened with shields made of electric-heat-insulating material. The winding ends are taken out on the terminal shoe for switching on to the source of the single-phase alternating voltage. EFFECT: enhanced quality control. 4 dwg