Upper-Bound Velocity Limit for Free-Jet Melt Spinning
The upper bound for the production of uniform amorphous ribbons during free-jet melt spinning is predicted by coupling a mass balance condition for the melt-pool with a simple boundary layer model for momentum transfer. The relationships between melt-pool length, ribbon thickness and wheel speed are investigated, and a criterion is developed for the onset of unsteady melt-pool behavior, which has previously been associated with increased surface roughness, porosity, and the formation of crystalline phases at high wheel speeds.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
H. Meco and R. E. Napolitano, "Upper-Bound Velocity Limit for Free-Jet Melt Spinning", Materials Science Forum, Vols. 475-479, pp. 3371-3376, 2005