DEVICE FOR CHECKING GEOMETRIC PARAMETERS OF BUTT WELDES Russian patent published in 2003 - IPC

FIELD: mechanical engineering; welding. SUBSTANCE: microprocessor sets of geometry of weld and, through vertical sweep control unit of first beam of double beam oscillograph tube and digital analog converter, sends signal to first input of double-beam oscillograph tube. Master oscillator effects control and sends pulse to measuring and setting vibrator power supplies through generating unit. Obtained response from vibrator power supplies is supplied through main ultrasonic pulse receiving and processing units into second vertical sweep control unit of double beam oscillograph tube (second input). Measuring and setting vibrator power supplies are installed for contact with magnetic liquid which is also in contact with surface of weld in ferromagnetic material case. Field winding installed on outer surface of case provides changing of density magnetic liquid. EFFECT: reduced labor input in measuring geometric characteristics of weld joints, improved accuracy of measurements. 3 cl, 1 dwg