Safran Aircraft Engines

Snecma

Grégory Ghosarossian-Prillieux

Mario Cesar De Sousa

Guillaume Sevi

Nicolas Pommier

Patrick Sultana

Guy Vieillefond

Mario César De Sousa

Dominique Michel Fouquet

Benoit Argémiro Matthieu Debray

Benoit Debray

Frédéric Noel

A method for manufacturing a casing, for example, an exhaust casing, for a turbomachine. The method generally includes: (a) producing casing sectors, each casing sector having a hub sector, a ferrule sector, and at least one arm linking the hub and ferrule sectors, (b) arranging the casing sectors adjacently and circumferentially, such that each hub sector has longitudinal edges facing longitudinal edges of adjacent hub sectors, (c) welding the longitudinal edges facing the hub sectors, and (d) adding and welding at least a second part of the ferrule to the casing sectors.

Method for manufacturing a turbomachine exhaust casing from segments welded together

A casing is provided, for example, an exhaust casing for a turbomachine. The casing generally includes an inner hub having an axis of rotation and an outer annular ferrule extending around the hub, the ferrule configured to define, with the hub, an annular flow path for a gas stream. In some examples, the ferrule is rigidly connected to the hub by arms. The hub generally includes, at one longitudinal end, a scalloped annular flange comprising solid portions distributed at regular intervals about said axis and spaced apart from each other by hollow portions. The hub is produced by assembling several angular hub sectors arranged circumferentially end to end around the axis, each hub sector connected to an adjacent hub sector by a longitudinal weld bead that extends over substantially the entire axial extent of the hub and that is substantially aligned axially with a hollow portion of said flange.

Turbomachine exhaust casing and method for manufacturing same

Growing community of inventors

Moissy-Cramayel, France

Grégory Ghosarossian-Prillieux