ON THE FORMATION OF AMORPHOUS METAL RIBBON BY THE PLANAR FLOW MELT-SPINNING (PFMS) PROCESS

The mechanism of ribbon formation in planar flow melt spinning (PFMS) of amorphous metal ribbons is considered. The theory of flow boundary layer formadon has been applied to the analysis of the stationary melt puddle of this process. It has been investigated how the specific hea t (C(p)) and viscosity change with temperature reduction. The results of calculations by the use of the finite difference method shows the i nfluence of wheel velocity and heat transfer coefficient on the thickn esses of boundary layer, displacement boundary layer and solidified la yer at the end of the melt puddle. The theoretical predictions show go od agreement with the experimental results.