Casting and directional solidification. of a cluster of turbine rotor vanes

摘要

Method of casting single crystal vanes of f.c.c. structure involves upwards directional solidification of single columnar grain, of predetermined transverse orientation and vertical 001 direction, delivered by a selector located at the bottom of a top-poured shell mould. Each shell mould cavity (8) is arranged so that its axis (12) is oriented along the 111 direction of the selected crystal.