Ultrasonic flaw testing equipment for detecting defects in cast metal billets

摘要

Cast metal billets are transported on a conveyor beyond a testing unit and are tested with regard to defects by means of ultrasonic probes which respectively are mounted in guide or coupling shoes. The coupling shoes rest on the billets during the testing operation, and a liquid is supplied between the coupling shoes and the billets to provde the necessary contact between the shoes and the billets. Impulses emitted by the testing unit activates a marking device which automatically marks the billets where defects are detected.