SAND CASTING AN ALUMINUM DIESEL PISTON WITH AN AS-CAST, REENTRANT COMBUSTION BOWL FOR LIGHT OR MEDIUM DUTY DIESEL ENGINES

The present invention relates to a method for sand casting an aluminum piston and a method for manufacturing an aluminum piston. The above method comprises a step for casting a piston having a complex geometric form including an undercut or a reentrant feature. In the casting, a discardable aggregat...

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Bibliographische Detailangaben
Hauptverfasser:	RICCHI RICHARD D, KOPCHIK JOSEPH C, OSBORNE MARK A
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES FOUNDRY MOULDING PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention relates to a method for sand casting an aluminum piston and a method for manufacturing an aluminum piston. The above method comprises a step for casting a piston having a complex geometric form including an undercut or a reentrant feature. In the casting, a discardable aggregate mold which can be removed from an as-cast component is used. According to an embodiment of the present invention, the complex geometric form may have an undercut combustion bowl formed inside a piston dome, and an inside cooling path. The undercut bowl and the inside path can be manufactured by using the discardable aggregate mold.