Flow Dynamics in the Melt Puddle during Planar Flow Melt Spinning Process

Abstract

Quality of amorphous ribbons obtained during planar flow melt spinning process depends highly on the dynamics of the melt puddle. The present study investigates the flow dynamics using pressure profiles, path lines and stream function. Pressure profiles help in predicting the melt blow-out. Transformation of planar flow melt spinning to free jet melt spinning can be observed using path lines in the puddle. Oscillations in the puddle can be traced by the stream function at the melt wheel contact. The analysis helps the experimentalists to carefully select the ejection pressure, wheel speed and nozzle-wheel gap to obtain a quality ribbon.