Improved molding core for manufacturing a hollow omc part

Patent metadata

Field	Value
Publication number	US-2024342963-A1
Application number	US-202218579342-A
Country	US
Kind code	A1
Filing date	Jul 6, 2022
Priority date	Jul 16, 2021
Publication date	Oct 17, 2024
Grant date	—

Abstract

Molding core for manufacturing an OMC hollow aeronautical part, in particular a fan module part, including a composite material including on the one hand a first phase of formula Mn+1AlCn, where n=1 to 3, and M being a transition metal selected from the group consisting of titanium, niobium, chromium or zirconium, the composite material including on the other hand a second phase of formula Al4C3

First claim

1 . A molding core for manufacturing an organic matrix composite hollow aeronautical part, in particular a fan module part, comprising a composite material comprising on the one hand a first phase of formula M n+1 AlC n , where n=1 to 3, and M being a transition metal selected from the group consisting of titanium, niobium, chromium or zirconium, the composite material comprising on the other hand a second phase of formula Al 4 C 3 .

2 . The molding core according to claim 1 , wherein the first phase is of one of the formulae among Ti 3 AlC 2 , Ti 2 AlC, Cr 2 AlC, Zr 2 AlC, Zr 3 AlC 2 , Nb 4 AlC 3 , or Nb 2 AlC.

3 . The molding core according to claim 1 , wherein the composite material comprises between 1 and 50% second phase by volume of the composite material, preferably between 1 and 20%.

4 . A method of manufacturing a molding core for the production of an organic matrix composite hollow aeronautical part, in particular a fan module part, the molding core comprising a composite material comprising, on the one hand, a first phase of formula M n+1 AlC n , where n=1 to 3 and M being a transition metal selected from the group consisting of titanium, niobium, chromium or zirconium, the composite material comprising, on the other hand, a second phase of formula Al 4 C 3 , the molding core being obtained by a powder metallurgy process comprising a mixing step in which powders for obtaining the composite material are mixed, and a shaping step.

5 . The method according to claim 4 , wherein the mixing step comprises mixing pure powders constituting the first phase so as to obtain the first phase in powder form, then mixing said first phase in powder form with an Al 4 C 3 powder so as to obtain the second phase.

6 . The method according to claim 4 , wherein the mixing step comprises mixing pure powders constituting the first phase with excess Al 4 C 3 powder so as to form the composite material in a single operation.

7 . A method of manufacturing an organic matrix composite hollow aeronautical part using a molding core obtained by a method according to claim 4 , the method comprising, after steps of inserting the molding core into a fibrous preform, impregnating a resin into the fibrous preform and solidifying the resin, a step of knockout the molding core by steaming.

8 . The method according to claim 7 , comprising, after the knockout step, a recovery step, in which the material knocked out by steaming is recovered so as to be reused in the manufacture of another molding core starting again from the mixing step.

Assignees

• Safran

Inventors

• Sallot Pierre Jean
• Bechelany Mirna
• Tran Nicolas

Classifications

• B22D29/002

  by leaching, washing or dissolving · CPC title

• B29K2909/04

  Carbides; Nitrides · CPC title

• B29C33/52

  soluble or fusible {(in particular used in injection moulding B29C45/4457)} · CPC title

• B22C9/10

  Cores; Manufacture or installation of cores {(breaker cores B22C9/084)} · CPC title

• B29C70/48

  and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM] {, e.g. by vacuum} · CPC title