METHOD FOR MANUFACTURING A COMPONENT USING THE LOST WAX CASTING METHOD WITH DIRECTED COOLING

摘要

A method for manufacturing a metal component using the lost-wax casting method is provided. The component is made of nickel alloy, with a columnar or monocrystalline structure with at least one cavity of elongate shape. The method includes creating a wax model of the component with a ceramic core corresponding to said cavity, the ceramic core comprising a first land for holding at one longitudinal end and a second land for holding at the opposite end, creating a shell mold around the model, the mold comprising a base and the first land of the core being at the same end as the base, placing the mold in a furnace, with the base standing on the sole of the furnace, pouring the said molten alloy into the shell mold, solidifying the poured metal by gradual cooling from the sole in a direction of propagation. The core in one example is secured to the shell mold by an anchor providing anchorage between the first land of the core and the wall of the mold, the second land of the core being retained in the mold by a retainer that slides on the wall of the mold.