INFLUENCE OF FORCED CONVECTION ON THE SOLIDIFICATION OF METAL IN CAST-IRON AND CERAMIC INGOT MOLDS

A nonstationary problem of solidifi cation of an ingot in molds with walls of varying thermal conductivity has been solved by the variational method with account taken of forced convection in the liquid phase of the metal. A formula for the temperature distribution in the liquid phase and the dependence of the time of advance of the solidifi cation front on its coordinates have been obtained. Numerical calculations of the time of solidifi cation of the ingot in castiron and ceramic molds have been done at different convection rates.
A nonstationary problem of solidifi cation of an ingot in molds with walls of varying thermal conductivity has been solved by the variational method with account taken of forced convection in the liquid phase of the metal. A formula for the temperature distribution in the liquid phase and the dependence of the time of advance of the solidifi cation front on its coordinates have been obtained. Numerical calculations of the time of solidifi cation of the ingot in castiron and ceramic molds have been done at different convection rates.
Author:  O. A. Kalashnikova and V. V. Dremov
Keywords:  functional, variation, solidifi cation front, ingot mold, thermal conductivity, heat resistance, heat-transfer coeffi cient
Page:  1161