Abstract: 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.degree.. Faster casting speeds can be used and improved billet and ingot surfaces result.

Abstract: This invention relates to an improved self-centering bottom block assembly for D.C. casting. The assembly comprises a bottom block which is slidably mounted on a supporting surface and which is provided with at least two guide extensions. Positioned below the D.C. mold are at least two recessed guide surfaces, the lower portion of which converges in the direction of the discharge end of the mold. The horizontal and rotational movement of the bottom block is restricted so as to ensure the insertion of the guide extensions into the recess defined by the guide surfaces and thereby guide the bottom block into the mold bore without contacting the mold body.

Abstract: This invention is directed to a horizontal casting apparatus having an improved mold mounting means which facilitates alignment of the mold with an ingot or billet support surface adjacent the discharge end of the mold.