Method of and mold for DC casting

摘要

This invention is directed to an improved mold bore configuration for a DC casting mold wherein the feed end of the mold bore is provided with a chill section having an inner surface which tapers outwardly in the direction of the discharge end of the mold. The tapered, diverging inner surfaces intersect the surfaces of the straight walled, shape determinative chilled section of the mold bore at an obtuse angle greater than 135 DEG . Faster casting speeds can be used and improved billet and ingot surfaces result.