ultrasonic flaw detector

This paper studied the feasibility of determining and comparing the thermal shock construction damage of refractory by ultrasonic flaw detector.

The defects in the cold rolling roll detected by ultrasonic flaw detector are mainly the cracking defects, the non-metallic inclusions plays an important role for producing the cracking defects.

The principle of detector is that the A-Scan flaw instrument of USL32 beams the ultrasonic to detect the bar material with the method of pulse echo once.