CPC B22C 7/02 (2013.01) [B33Y 80/00 (2014.12)] | 7 Claims |
1. A method for forming a wax model for the manufacture of turbine blades by lost-wax casting, wherein
a core is provided, defining ducts extending between a root and a tip,
a lower surface shell and an upper surface shell are provided,
the lower surface shell and the upper surface shell are positioned on either side of the ducts of the core adjacent to the root,
the lower surface shell and the upper surface shell are bonded around the core,
the core equipped with the lower surface shell and with the upper surface shell is positioned in an injection mold,
wax is injected around said core equipped with the lower surface shell and with the upper surface shell, so as to form a wax model comprising a blade airfoil and a blade root comprising a fir tree, the lower surface shell and the upper surface shell being positioned around the core so as to form a portion of the fir tree of the wax model.
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