FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Ceramic core consists of at least main core that comprises element arranged to make a bath and element arranged to make at least one cavity under aforesaid bath. Both elements make a clearance between them that forms, at least partially, the bath bottom wall. Core comprises extra core arranged under said bath jointed via one ceramic rod made integral with element that form the bath.
EFFECT: simplified production of vanes.
12 cl, 11 dwg
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