摘要:
A method for producing a cast component comprises forming a thin shell ceramic casting mold with a wall thickness less than about 1.52mm (0.060 inches) by the photopolymerization of a ceramic filled resin. A molten metal is poured into the thin shell ceramic casting mold without providing additional support to the casting mold. A thermal gradient is moved through the molten metal within the thin shell ceramic casting mold to cause solidification into a cast component with a single crystal or directionally solidified microstructure.
摘要:
A casting mold comprises a free form fabricated ceramic shell which has a thin outer wall defining a cavity adapted for receiving a molten metal. The shell is positioned within a container and spaced from the inner surface of the container. At least one support member substantially fills the space between the outer wall of the shell and the inner surface and reinforcing said shell.
摘要:
The present invention contemplates a multi-airfoil vane segment (50) produced as a single crystal casting from a rhenium containing directionally solidified alloy. The single crystal casting containing grain boundary strengtheners.