Molten Aluminum Quality Evaluations for Thin Foil Products

Abstract

In aluminum casting, metal refining affects the quality of final material as well as the metal performance in the subsequent process. In particular, the importance of refining increases in foil product group as the thicknesses become thinner. Pinhole/hole performance is a consideration in the packaging foil product group. In this study, two different filters are used to refine 8XXX series aluminum alloy during twin roll casting process. Inclusion analysis was performed from 8XXX series aluminum alloy strips cast by industrial scale with optical emission spectrometer to observe effects of refining. The main examination of the study is the pinhole/hole quantity and density analysis to determine the quality of final packaging foil?. All tests were evaluated by comparing the results of the 8XXX series aluminum sample cast with material produced using a standard filter.