Description

This paper presents the experimental method used and results obtained from an ultrasonic system used on a continuous rod, casting and rolling line with pure and alloyed aluminum, as well as in a large-scale die casting shop. The paper presents various methods used to measure the dissolved hydrogen and the resulting product improvements after ultrasonic degassing. It also discusses sampling methods and results of spectrum analysis and inclusion measurement. Finally, it discusses the sources of contamination from hydrogen, solid inclusions, and dissolved trace elements.