Melt Drag Twin Roll Caster

A melt drag twin-roll caster (MDTRC) was designed to convert vertical burrs at strip edges to horizontal burrs. A prototype MDTRC was assembled and tested. The forming roll is inclined frontward relative to the top of the solidification roll. Aluminum alloy strips were cast at a higher roll speed and lower roll load than what can be achieved with the conventional twin-roll caster for aluminum alloys. A semisolid layer which exists on the solidifying layer by a lower roll was formed and solidified using an upper roll. In this study, the formability of the semisolid layer and formation of horizontal burrs were investigated.