EP 4021663 B1 20230705 - IMPROVED METHOD FOR MANUFACTURING A CERAMIC CORE FOR MANUFACTURING TURBOMACHINE VANES AND CERAMIC CORE
Title (en)
IMPROVED METHOD FOR MANUFACTURING A CERAMIC CORE FOR MANUFACTURING TURBOMACHINE VANES AND CERAMIC CORE
Title (de)
VERBESSERTES VERFAHREN ZUR HERSTELLUNG EINES KERAMISCHEN KERNS ZUR HERSTELLUNG VON TURBOMASCHINENSCHAUFELN UND KERAMISCHER KERN
Title (fr)
PROCEDE AMELIORE DE FABRICATION D'UN NOYAU CERAMIQUE POUR LA FABRICATION D'AUBES DE TURBOMACHINE ET NOYAU CERAMIQUE
Publication
Application
Priority
- FR 1909534 A 20190830
- FR 2020051507 W 20200827
Abstract (en)
[origin: WO2021038174A1] Method for manufacturing a blank for a ceramic core (10) for the manufacture of hollow turbomachine vanes according to the lost-wax casting technique, the blank being manufactured by additive manufacture and comprising at least a first portion (20) which is intended to form the cavities of the hollow vanes and at least a second portion (30) which is configured to allow the core (10) to be positioned in a wax mould, the second portion (30) and the first portion (20) being positioned and retained relative to each other by means of a joint portion (60) which is interposed between the first portion (20) and the second portion (30), at least one through-hole (50) extending through the second portion (30), the joint portion (60) and the first portion (20), a first end of the through-hole (50) opening at an outer face of the second portion (30), and a second end of the through-hole (50) opening at an outer face of the first portion (20).
IPC 8 full level
B22C 21/14 (2006.01); B22C 9/10 (2006.01)
CPC (source: EP US)
B22C 7/02 (2013.01 - US); B22C 9/103 (2013.01 - EP US); B22C 21/14 (2013.01 - EP)
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
DOCDB simple family (publication)
WO 2021038174 A1 20210304; CN 114340815 A 20220412; CN 114340815 B 20231205; EP 4021663 A1 20220706; EP 4021663 B1 20230705; FR 3100143 A1 20210305; FR 3100143 B1 20211112; US 11745255 B2 20230905; US 2022288671 A1 20220915
DOCDB simple family (application)
FR 2020051507 W 20200827; CN 202080060732 A 20200827; EP 20775042 A 20200827; FR 1909534 A 20190830; US 202017753292 A 20200827