Patent ID: 6435257
Filing Date: 2002-08-20
Classification: B22C,B22D

Abstract:
In a bottom pouring ingot mold having a down pour pipe with an upper portion, a middle portion, and a lower portion, one or more ingot molds, each of said one or more ingot molds with an upper portion, a middle portion, and a lower portion, and one or more runners connecting said down pour pipe to each of said one or more ingot molds, a method for producing ingots comprising the steps of:inserting a first heating element into said down pour pipe for the purpose of pre-heating said upper and middle portions of said down pour pipe; inserting a second heating element into each of said one or more ingot molds, for the purpose of pre-heating said lower and middle portions of each of said ingot molds; removing said first heating element from said down pour pipe and said second heating element from each of said ingot molds; and pouring molten metal into said down pour pipe, such that said molten metal flows into said one or more ingot molds via said one or more runners.