Snecma

Safran Aircraft Engines

Eric Gvozdenovic

Patrick Jean-Louis Reghezza

Gael Loro

Patrick Reghezza

Michael Delapierre

Alain Jacques Michel Bassot

Herve Gignoux

Christian Manuel Planas

Hervé Gignoux

Michaël Delapierre

Alain Jacques Bassot

Gaël Loro

Christian Planas

A method for repairing a flange of a rotor, to a transverse surface of which a disk of a fan in an upstream turbo-fan engine is attached. The flange includes, in a form of a ring, openings for connecting to the disk and intermediate discharge openings. Wear marks are formed by friction of the fan blades on the flange. The method includes machining spot facings onto the flange, in areas with wear marks; placing anti-wear slugs in the discharge openings that can be covered by the blades during friction; and the spot facings extend between the connection openings and are circumferentially limited by clamping surfaces of the connection between the disk and the flange.

Method for repairing wear marks on a rotor supporting the fan of a bypass engine

A method of repairing or of reworking a turbomachine disk including, on its rim, at least one external radial tab with an axial bore to accept an axial pin including a head and a shank with a threaded portion, the pin being slipped into the bore such that the head comes to press against one face of the tab through tightening of a nut on to the shank with the threaded portion against the opposite face of the tab, the pin forming a retaining mechanism to keep a tab secured to a component attached to the rim. A spot face is machined in the tab around the bore corresponding to a wearing zone, and a replacement pin including a flange pressing against the surface of the spot face, of a diameter greater than that of the head, is fitted.

Method of repairing or reworking a turbomachine disk and repaired or reworked turbomachine disk

Growing community of inventors

Coutencon, France

Eric Gvozdenovic