30 Metal fluidity is critical to successive molding filling

Metal fluidity is critical to successive molding filling during a casting process. Which one of the following factors will not enhance metal fluidity during pouring? Using a metal alloy whose chemical composition is substantially different than the eutectic composition Heating the metal alloy well above is liquidus temperature prior to pouring Pouring the metal into a mold with low thermal conductivity Using a metal alloy with low viscosity in the molten state None of the above

Solution

option (c)..............if not may be option (e)

This term consists of two basic factors: (1) characteristic molten metal and (2) casting parameters. The following characteristics of molten metal influence fluidity. a) Viscosity. As viscosity and its sensitivity to temperature (viscosity index) increase, fluidity decreases. and also heat transfer