Rapid chill mold

Abstract

A mold suitable for casting therein molten metal or other molten materials wherein the mold includes a heat exchange surface, the mold includes means for providing a flow of coolant liquid to remove heat from the heat exchange surface by formation of nucleate vapor bubbles on the heat exchange surface, the liquid tending to include a viscous sublayer adjacent to the heat exchange surface, the improvement wherein the heat exchange surface includes at least one of: means for forming pressure gradients in the liquid having a component perpendicular to the heat exchange surface to facilitate removal of the nucleate bubbles; and means for breaking up the viscous sublayer to facilitate removal of the nucleate bubbles, and wherein the heat exchange surface comprises a series of concave curved surfaces and wherein septum members with corresponding curved surfaces, which may be split to permit positioning into close proximity to the heat exchange surface to provide desired coolant flow characteristics over the surfaces of the mold heat exchange surface, the septum members being bonded to axial structure elements that fasten to end members mounted on the mold whereby support is provided to the septum members and desired liquid flow patterns are obtained.

Dependencies are inferred from the claim text.