Patent ID: 6213193
Filing Date: 2001-04-10
Classification: B22D

Abstract:
A method of casting molten metal into a metal product comprising:providing a mold comprising a pair of opposed movable belts and a pair of opposed side dams for receiving molten metal and casting a metal product downwardly from the mold;delivering said molten metal from a nozzle into said mold under metallostatic pressure, said nozzle having a tip disposed between said belts, with a space between the tip and the belts on both sides of the tip;solidifying said molten metal into said metal product in said mold;while solidifying said molten metal, supplying gas under pressure into said space via a nozzle gas tube having one end in communication with a gas supply and the other end in communication with said space;measuring said metallostatic pressure of said molten metal in said mold adjacent said tip; andcontrolling the gas pressure in said space to be slightly less than said metallostatic pressure to resist backflow of molten metal into said space.