摘要:
The invention relates to a foundry core (30) for manufacturing a blade (1) of a turbomachine (1) having a tip section offset, comprising a core element (31) for forming various internal cavities (19a-19e), said core element comprising a leading-edge cavity internal core (31a), central cavity internal cores (31b, 31c, 31d) and a trailing-edge cavity internal core (31e), characterized in that the internal core for the central cavity (31d) adjacent to the internal core (31e) for the trailing-edge cavity has a bulge (34) extending toward the core (31a) for the leading-edge cavity.
摘要:
A method for machining, in a three-dimensional machining centre, a vane (10) comprising an airfoil blade (18), a platform (12) beneath the upstream and downstream portions of which are formed, respectively, upstream and downstream supports (12A, 12B) for a sealing liner (20), a blade root (16) and a stilt (14) interposed between said platform and the blade root, method wherein the supports form two bearing points (22A, 22B) for a 6-point system for positioning the vane in the three-dimensional machining centre.
摘要:
The invention relates to an inter-vane seal for a wheel of a turbine or a turbomachine compressor, comprising inserts (38) engaged in longitudinal cavities (32) of the lateral edges of the platforms (18) of the vanes (14) and being supported in operation on the lateral edges facing the platforms of the adjacent vanes (12), each insert having a long cylindrical form and a comprising, on its outer cylindrical surface, at least one annular gap (44) for the passage of air for cooling the platforms and at least one annular groove (46) forming a wear control, the depth of said groove being less than the or each annular gap (44) for the passage of the cooling air.