Safran

Safran Aircraft Engines

Safran Ceramics

Ramzi Bohli

Ngadia Taha Niane

Didier Maurice Marceau Guerche

David Grange

Adrien Bernard Vincent Rollinger

Joseph Toussaint Tami Lizuzu

Saïd Boukerma

Alain Armel Le Hegarat

Didier Maurice Guerche

Said Boukerma

Thierry Guy Xavier Tesson

Romain Pierre Cariou

Mirna Bechelany

Maxime François Roger Carlin

Rémy Dupont

Simon Thibaud

Vincent Marc Herb

Hervé Bruno Marc Osmont

Didier Dangeul

Alexis Lourette

Loic Galvin

Mathieu Jean Luc Vollebregt

Adrien Bernard Rollinger

Mathieu Jean Vollebregt

Loïc Galvin

An assembly for producing a molding, made of removable material, of a turbomachine blade, includes an injection mold for the removable material in which a first core element and a second core element are mounted in a predetermined molding position, wherein the first and second core elements extend in a first direction. The mold includes a first face for molding a pressure-side face of the blade and a second face for molding a suction-side face of the blade and arranged facing the first face in a second direction perpendicular to the first direction. Retaining members hold the cores in position in the injection mold.

Assembly for producing a molding made of removable material of a turbomachine

A moulding device () for moulding a material around a core (), comprising a hollow moulding enclosure () suitable for receiving the core (), and means for controlling the shape of the core () in the hollow enclosure (), the control means comprising means for deforming the core (). The control means further comprise force control means and a control unit () suitable for actuating the deformation means in accordance with information provided by the force control means.

Moulding device

A method for forming a wax model for the manufacture of turbine blades by lost-wax casting, in which a core is provided, a lower surface shell and an upper surface shell are positioned and bonded on either side of ducts of the core adjacent to the root, the core equipped with the lower surface shell and with the upper surface shell is positioned in an injection mold, wax is injected around the core equipped with the lower surface shell and with the upper surface shell, so as to form a wax model including a blade airfoil and a blade root including a fir tree, the lower surface shell and the upper surface shell being positioned around the core so as to form a portion of the fir tree of the wax model.

Method for forming a wax model for a turbine blade

A core for the foundry of an aeronautical part such as a turbine blade, the core being intended to be disposed in an inner housing defined by a mold, the core comprising a body intended to form the internal shape of the turbine blade, an impact portion, disposed on at least a portion of the periphery of the body so as to break a fluid jet when filling the inner housing with the fluid, the impact portion comprising a top and at least one deflection wall converging towards the top.

Core for metal casting an aeronautical part

A method for producing a consolidated fiber preform intended for the manufacture of a part made of composite material, includes shaping a fiber texture in a heated metal mold, the texture being pre-impregnated with a transient or fugitive material, or shaping a fiber texture in a metal mold and injecting a transient or fugitive material into the fiber texture held in shape in the metal mold, cooling the mold, removing the set fiber preform from the mold, coating the fiber preform with a slurry containing a powder of ceramic or carbon particles, heat-treating the coated fiber preform so as to form a porous shell around the fiber preform by consolidation of the slurry and so as to remove the transient or fugitive material present in the fiber preform, consolidating the fiber preform by gas-phase chemical infiltration.

Method for producing a consolidated fiber preform

A cluster model and a shell for the production, by lost wax casting, of a plurality of turbomachine elements, are provided. The shell includes a central sprue that is fluidly connected to a casting cup for receiving molten metal; a plurality of shell elements; a plurality of bottom feed conduits for the shell elements; and a handling accessory shell that is independent of the plurality of shell elements and of their metal supply circuit, such that there is no fluid connection to the shell elements. The handling accessory shell is fluidly connected to the central sprue so as to allow top-pour casting of the handling accessory shell.

Cluster model and shell for obtaining an accessory for the independent handling of formed parts and associated method

The invention provides a method of assembling together a first core () and a second core () in order to make a non-permanent model configured for use in lost wax molding to form a part having a first cavity and a second cavity corresponding respectively to the first core and to the second core. The invention is characterized by the fact that the first and second cores () are assembled together with a first spacer (), the first spacer () being arranged between the first and second cores.

Method for creating a nonpermanent model

A feed system for conveying a molten metal that is to make a casting, the system including a feed channel made of ceramic material that is configured to enable the molten metal to flow by gravity inside the feed channel, the feed channel having a first portion extending in a first direction, and at least one second portion extending in a second direction different from the first direction, the second portion being arranged downstream from the first portion and being connected to the first portion by a junction. The system further includes a damping channel having a first end opening out into the junction and a second end that is closed, the damping channel extending the first portion of the feed channel.

Supply system for supplying a mould with molten metal, and facility and manufacturing method implementing same

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Moissy-Cramayel, France

Ramzi Bohli