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1. WO2012085427 - PROCESS FOR MANUFACTURING A SALT CORE BY ISOSTATIC COMPACTION FOR PARTS IMPLEMENTING SUCCESSIVE FOUNDRY AND FORGING OPERATIONS

Publication Number WO/2012/085427
Publication Date 28.06.2012
International Application No. PCT/FR2011/053052
International Filing Date 19.12.2011
IPC
B21J 5/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
5Methods for forging, hammering, or pressing; Special equipment or accessories therefor
B22C 9/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
CFOUNDRY MOULDING
9Moulds or cores; Moulding processes
10Cores; Manufacture or installation of cores
CPC
B21J 5/002
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
5Methods for forging, hammering, or pressing
002Hybrid process, e.g. forging following casting
B22C 9/105
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
CFOUNDRY MOULDING
9Moulds or cores
10Cores; Manufacture or installation of cores
105Salt cores
Applicants
  • SAINT JEAN INDUSTRIES [FR]/[FR] (AllExceptUS)
  • EPALE, Romain [FR]/[FR] (UsOnly)
Inventors
  • EPALE, Romain
Agents
  • DUPUIS, François
Priority Data
106111623.12.2010FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) PROCESS FOR MANUFACTURING A SALT CORE BY ISOSTATIC COMPACTION FOR PARTS IMPLEMENTING SUCCESSIVE FOUNDRY AND FORGING OPERATIONS
(FR) PROCEDE DE FABRICATION DE NOYAU DE SEL PAR COMPACTION ISOSTATIQUE POUR DES PIECES METTANT EN OEUVRE DES OPERATIONS SUCCESSIVES DE FONDERIE ET DE FORGEAGE
Abstract
(EN)
The process for manufacturing the salt core with a view to being introduced into a foundry mould by casting of parts made of aluminium, aluminium alloy or light alloys obtained following foundry casting operations for the production of a foundry preform, is characterized in that the core is a salt powder and undergoes, for the shaping thereof, an isostatic compression operation of the salt powder, the core obtained in the desired shapes then being introduced into the foundry mould in order to produce the form to be obtained, and in that the form resulting from the foundry operation is a preform that includes the salt powder core obtained by isostatic compression, said preform then being forged with its core at a pressure between 600 and 700 MPa with a view to obtaining the final form of the product to be obtained, and the core then being discharged.
(FR)
Le procédé de fabrication du noyau de sel en vue d'être introduit dans un moule de fonderie par coulage de pièces en aluminium, alliage d'aluminium ou alliages légers obtenues suivant des opérations de coulage de fonderie pour la réalisation d'une préforme de fonderie, se caractérise en ce que le noyau est une poudre de sel et subit pour sa mise en forme une opération de compression isostatique de la poudre de sel, le noyau obtenu aux formes souhaitées étant ensuite introduit dans le moule de fonderie pour réaliser la forme à obtenir, et en ce que la forme issue de l'opération de fonderie est une préforme incluant le noyau en poudre de sel obtenue par compression isostatique, la dite préforme étant ensuite forgée avec son noyau à une pression entre 600 et 700 MPa en vue de l'obtention de la forme finale du produit à obtenir, et le noyau étant ensuite évacué.
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