Influence of chomium and molybdenum in solidification and shrinkage defects for high resistance grey iron alloys

Abstract

This paper presents an evaluation of Cr and Mo influence in solidification and shrinkage defects in grey cast iron. A series of five grey cast irons were produced with different Cr and Mo additions. A test casting was developed by casting processes simulation to reproduce defects of an specific cylinder head. Macroshrinkage cavities were detected in the top of the test parts microshrinkage porosity defects were analyzed in the hot spots.