Spheroidal Graphite Iron with High Ductility at Cast State and Produced by Cupola Melting

Abstract

This paper described an industrial scale experience of melting as-cast high-ductility nodular iron. We discussed the rationale of selection of chemical compositions and the practice of speroidising and inoculation processes. The experimental results show that nodular iron castings with consistent quality at cast state can be produced using cupola melting technique. The castings of two heavy truck components–brake shoes and brake plates produced meet the technical requirements set in China standard GB/T1348-2009.