EP 3993922 A1 20220511 - METHOD FOR MANUFACTURING A METAL PART
Title (en)
METHOD FOR MANUFACTURING A METAL PART
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES METALLTEILS
Title (fr)
PROCEDE DE FABRICATION D'UNE PIECE METALLIQUE
Publication
Application
Priority
- FR 1907388 A 20190703
- FR 2020051161 W 20200702
Abstract (en)
[origin: WO2021001633A1] The invention relates to a method for manufacturing a metal part (18) of a turbomachine comprising at least one first metal material and at least one second metal material, the chemical compositions of the first and second materials being different, the method comprising the following steps: a) forming an element of which at least a first metal part is made of the first metal material; b) placing the element in a first mould and pouring wax into the mould to at least partially cover the element, the first mould having a cavity corresponding to at least one portion of an outer surface of the metal part; c) forming an assembly by removing the first mould; d) making a shell mould with a first ceramic around the assembly formed at the end of step c); e) removing the wax from the shell mould and pouring the second metal material inside the shell mould to replace the wax; f) removing any ceramic present in the assembly formed at the end of step e) so as to form a metal part comprising the first metal material and the second metal material.
IPC 8 full level
B22D 19/04 (2006.01); B22C 9/04 (2006.01); B22C 9/22 (2006.01)
CPC (source: CN EP US)
B22C 9/04 (2013.01 - EP); B22C 9/043 (2013.01 - CN US); B22C 9/22 (2013.01 - EP US); B22D 19/04 (2013.01 - EP US); B22D 19/16 (2013.01 - CN US); B33Y 80/00 (2014.12 - CN); B33Y 80/00 (2014.12 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 3098138 A1 20210108; FR 3098138 B1 20210618; CN 114051434 A 20220215; CN 114051434 B 20240402; EP 3993922 A1 20220511; US 11826819 B2 20231128; US 2022347740 A1 20221103; WO 2021001633 A1 20210107
DOCDB simple family (application)
FR 1907388 A 20190703; CN 202080048778 A 20200702; EP 20747067 A 20200702; FR 2020051161 W 20200702; US 202017623994 A 20200702