Crack Defect in High Manganese Steel Castings

摘要

High manganese steel is also known as Hadfield manganese steel, after the name of its inventor. It is widely used for mining equipment components viz, Gyratory cone crusher Mantles, Jaw crushers, Hammers for impact crushers and Tooth point for excavators. Also railways world over are major user of Mn steel, for Crossing (Frogs) castings (Fig 1). Apart from common defects like cross joint, pinholes, cold shut fins etc, Mn steel suffers from inherent problems like cracks, sand fusion and shrinkage.