Thermal and mechanical behaviour of grey cast iron and ductile iron castings using magnetic molding and lost foam processes

Pierre-Marie Geffroy (1) , Merouane Lakehal (1) , Javier Goñi (1) , Eric Beaugnon (2) , Jean-François Silvain (3)

1 INASMET-Tecnalia (SPAIN)
2 CRETA - Consortium de Recherches pour l'Emergence des Technologies Avancées
3 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

The magnetic molding process is an extension of lost foam process and uses an expendable pattern surrounded by steel shot bonded together by the action of an induced magnetic field. This paper presents the comparative results obtained from sand mold and magnetic molding processes for grey cast iron and ductile iron castings. Therefore, this paper reviews the factors involved in the production of suitable patterns and the magnetic mold and on the other hand presents the comparative microstructures obtained for grey cast iron and ductile iron castings. This study also describes the advantages and the characteristics of the magnetic molding process. The main factors involved in the magnetic molding process are also discussed.

Mots clés: Magnetic molding; Lost foam process; Thermal properties; Grey cast iron; Ductile iron castings

Domaines: Matériaux

Pierre-Marie Geffroy, Merouane Lakehal, Javier Goñi, Eric Beaugnon, Jean-François Silvain. Thermal and mechanical behaviour of grey cast iron and ductile iron castings using magnetic molding and lost foam processes. Journal of Materials Processing Technology, 2009, 209 (8), pp.4103-4111. ⟨10.1016/j.jmatprotec.2008.10.002⟩. ⟨hal-00382858⟩