CERAMIC CORE USED FOR THE MANUFACTURE OF ENGINE BLADES BY LOST-WAX CASTING

A ceramic core with a convex parabolic boss stabilizes during the lost-wax casting of turbomachine blades, addressing deformation and breakage issues, ensuring precise dimensions and reduced scrap rates.

FR3124408B1Active Publication Date: 2026-06-19SAFRAN SA +1
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Patent Information

Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
SAFRAN SA
Filing Date
2021-06-25
Publication Date
2026-06-19

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Abstract

A ceramic core (40) used for the lost-wax casting of a turbomachine blade, the core (40) extending along a longitudinal direction (X) between a foot and a head (41), the core (40) comprising a first non-functional portion (44) located at the foot or the head (41), the first non-functional portion (44) comprising at least one boss (60; 62; 64) extending perpendicularly to the longitudinal direction (X), the boss (60; 62; 64) having a distal end portion, relative to the first non-functional portion (44), that has a parabolic convex shape. (See Figure 3 for an abstract drawing.)
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