DEVICE FOR ULTRASONIC CHECKING OF WELDS OF THE TUBES Russian patent published in 1995 - IPC

FIELD: non-destructive inspection of materials. SUBSTANCE: gadget is fixed along the circumference of the tubes before checking. During process of checking, rotation from the engine is transmitted to driving friction drum and to driven drum through flexible friction member, as a result, gadget provided with ultrasonic converters moves along circumference of the tube. As antifriction tape shifts inside flexible friction member, the friction of functional parts of flexible friction member is eliminated, so the gadget does not slide along the tube. EFFECT: improved efficiency; improved precision. 2 dwg