Patent ID: 6840303
Filing Date: 2005-01-11
Classification: B22D

Abstract:
1. A continuous casting process for continuously casting a light alloy for producing an ingot made of a light alloy by using a continuous casting apparatus comprising a spout having an upward-turned molten metal receiving port and a downward-turned molten metal outlet, a cylindrical water-cooled casting mold which is disposed immediately below said spout, said cylindrical water-cooled casting mold having an inside radius larger than an inside radius of said molten metal outlet, and lubricating oil discharge passages having outlets provided below said spout to supply a lubricating oil through said outlets to a portion between said water-cooled casting mold and the molten metal brought into contact with said water-cooled casting mold, wherein said process comprising the steps of: preparing said lubricating oil having a vaporization rate of 30% or more at 300° C., supplying said lubricating oil through said outlets of said lubricating oil discharge passages thereby to define an annular gas accumulation below an annular protrusion of said spout for spacing the molten metal apart from said outlets of said lubricating oil discharge passages.