Patent ID: 7246653

Claim:
A process for manufacturing a blade for a turbomachine, wherein the blade includes a first central longitudinal cavity and a second longitudinal cavity, which together form a cooling circuit by communicating with each other at one longitudinal end of the blade via a transverse channel, the process comprising the steps of: manufacturing first and second cores corresponding to the cavities, where the two cores each have an end portion, by which they are connectable together by a mortise and tenon type connection; connecting the first core to the second core via said mortise and tenon type connection to form an assembly of the two cores having residual spaces formed by the mortise and tenon type connection, such residual spaces being liable to give rise to flashings on the poured metal if not plugged; plugging residual spaces formed by the mortise and tenon type connection in the assembly of the two cores to form a plugged assembly of the two cores; positioning the plugged assembly of the two cores in a shell mould; and pouring metal into the mould to form a blade for a turbomachine.