Safran Aircraft Engines

Alliance

Snecma

Guillaume Fribourg

Jean-Baptiste Mottin

Jean-Claude Bihr

Clément Gillot

Stéphane Knittel

Florian Tellier

Jean-François Castagne

Pierre Delaleau

Clement Gillot

A device for fabricating a three-dimensional part by selectively melting a powder bed, the device including a first tank for containing a first powder and provided with a first powder dispenser valve, a second tank for containing a second different powder and provided with a second powder dispenser valve, a first and a second monitoring device for monitoring the quantity of first powder delivered by the first valve and the quantity of second powder delivered by the second valve, a mixer chamber in communication with the first and second valves and including a third powder dispenser valve, and a mixer for mixing the powder particles in the chamber, a support for receiving the powder delivered by the third valve and on which the parts is to be fabricated, a powder spreader for spreading powder on the support, and a heater member for locally melting the powder spread on the support.

Device and a method for fabricating a three-dimensional part by selectively melting a powder bed

A method for heat treating a powder part preform including a titanium-based alloy, wherein the method includes the heat treatment of the preform in a furnace at a predetermined temperature, wherein the preform is on a holder during the heat treatment, wherein the holder includes a zirconium-based alloy having a zirconium content greater than or equal to 95% by weight, wherein the holder material has a melting temperature higher than the predefined temperature of the heat treatment, and wherein an anti-diffusion barrier is arranged between the preform and the holder in order to prevent welding of the preform to the holder.

Method for heat treating a preform made of titanium alloy powder

A method includes fabricating a part out of composite material including fiber reinforcement densified by a metal matrix.

Method for producing a part consisting of a composite material

A composition for sintering to fabricate a part comprising an alloy based on titanium aluminide, the composition including a powder of an alloy based on titanium aluminide, and an addition powder including a mixture of a metallic aluminum powder and of a metallic titanium powder. The composition includes 0.5% to 5% by weight of addition powder.

Composition for fabricating parts out of titanium aluminide by sintering powder, and a fabrication method using such a composition

A method for heat treating a powder part preform including a titanium alloy, includes heat treating the preform in a furnace at a predefined temperature, wherein the preform is on a holder during the heat treatment. The holder includes a titanium alloy having a mass titanium content no lower than 45%, or a zirconium alloy having a mass zirconium content no lower than 95%, wherein the material making up the holder has a melting temperature higher than the predefined heat treatment temperature, and an antidiffusion barrier is arranged between the preform and the holder to prevent the preform from becoming welded to the holder.

The invention provides tooling () for acting during heat treatment to support a preform () of a three-dimensional part obtained by shaping a metal or ceramic powder, the preform presenting at least one bearing surface () on which it can rest and at least one suspended surface () that is suspended relative to the bearing surface, the tooling comprising a tray (), and a plurality of blocks () arranged on the tray and each having at least one surface () for supporting the preform, the blocks being suitable for moving relative to one another by sliding on the tray between a first position in which the blocks are spaced apart from one another and together define a first volume, and a second position in which the blocks together define a second volume that is smaller than the first volume. The invention also provides a method of heat treating a preform made of powder and using such tooling.

Tooling for use during heat treatment to support a preform made of powder

A hollow vane, includes a main portion, of which the cavity is closed by a cover, that is produced by expanding the main portion relative to the cover, for example by means of differential thermal expansion, then by placing the cover at the bottom of the opening of the cavity, before allowing the main portion to close again, closing a nesting between a protrusion at the bottom of the cover and a widening at the bottom of the opening. The disadvantages linked to the use of welding, glue or even assembly parts are as such avoided.

Growing community of inventors

Grenoble, France

Guillaume Fribourg