Snecma

Yvon Louesdon

Serge Prigent

Jean-Louis Martial Verger

Jean-Claude Plazanet

A tool for manufacturing a casting core, for a turbomachine blade with a leading edge and a trailing edge, the core includes a thick part on the leading edge side and a thin part on the trailing edge side is disclosed. The tool includes first and second dies of the core that are moveable in a direction with respect to each other between a molding position and a demolding position, sub-components that are moveable relative to the dies, and mechanical ejectors that are provided on the first and second dies. The parts of the dies corresponding to the thin part of the core do not include a movable sub-component. The thin part of the core is demolded along the main direction of opening of the first and second dies.

Tool for manufacturing ceramic casting cores for turbomachine blades

A process for geometrical construction of a flash land is provided for a flash land that is to be provided in a die for forging of a turbomachine vane, in accordance with determined parameters, where the vane includes a blade. The process includes choosing at least three reference planes corresponding to a root, middle and tip of the blade. At least three reference sections of the blade in reference planes corresponding to the root, middle and tip of the blade are chosen in the reference planes. A length of the flash land and a shrinkage distance for the three reference sections are determined in the reference planes. Intermediate sections of the flash land and the corresponding flash gutter of the flash land from the reference sections are constructed by interpolation in the predetermined planes.

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Taverny, France

Yvon Louesdon