Ultrasonic testing (UT) is an indispensable component of quality inspection for aluinium extrusion billet and forging stock.
With linear ultrasonic testing stations, 100% of the centre core region are examined for cracks and inclusions, but not the full diameter of the log.
However, as centre cracks and centre cavities are by far the most common material flaws in the logs, this method affords a good standard of quality verification.
The fundamental emphasis is to integrate ultrasonic testing (UT) into the production process without extra handling and without additional staff requirements. In modern billet production plants a linear UT testing station is typically integrated immediately after the casting operation in combination with the visual inspection facility.
Functional principle linear ultrasonic testing
Linear ultrasonic testing