EP 0648560 B1 19981202 - Method for the production of ceramic cores for casting
Title (en)
Method for the production of ceramic cores for casting
Title (de)
Verfahren zur Herstellung keramischer Kerne für die Giesserei
Title (fr)
Procédé de fabrication de noyaux céramiques pour fonderie
Publication
Application
Priority
FR 9312163 A 19931013
Abstract (en)
[origin: EP0648560A1] A method for the production of ceramic cores for casting includes the following stages: - hot-injection of a thermoplastic paste based on a refractory ceramic composition and an organic fraction, - removal of the organic fraction by heat treatment, - heat treatment limited to a minimum consolidation, - impregnation of the porous structure of the core using a solution including a colloid of a simple oxide based on silica or alumina, - removal of the liquid part of the impregnation product.
IPC 1-7
IPC 8 full level
B22C 9/04 (2006.01); B22C 9/12 (2006.01); B28B 1/24 (2006.01); C04B 38/06 (2006.01); C04B 41/81 (2006.01)
CPC (source: EP US)
B22C 9/12 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0648560 A1 19950419; EP 0648560 B1 19981202; DE 69414974 D1 19990114; DE 69414974 T2 19990602; FR 2711082 A1 19950421; FR 2711082 B1 19951201; JP 3540842 B2 20040707; JP H07232236 A 19950905; US 5697418 A 19971216; ZA 947978 B 19950615
DOCDB simple family (application)
EP 94402286 A 19941012; DE 69414974 T 19941012; FR 9312163 A 19931013; JP 24812494 A 19941013; US 67229796 A 19960628; ZA 947978 A 19941012