Molten droplet solidification and substrate remelting in microcasting Part I: numerical modeling and experimental verification

摘要

This paper presents a numerical model of a molten metal droplet impinging, solidifying and bonding to a solid substrate. The physical and numerical model includes dissimilar materials, multi-dimensional axisym- metric heat transfer, tracking of solid/liquid interfaces during remelting and solidification, and coupled treatment of the continuous droplet/substrate region. The numerical model solves for the evolution of the temperature distri- bution in the droplet and substrate, predicts the position of the remelting and solidification fronts, and accounts for convective motion.