Machinability of abrasion resistance cast iron with PCBN cutting tools

Highly abrasion and erosive resistance materials are an important group of materials and has very wide applications in many industrial areas. The characteristic properties for this material include the castability and the superior wear resistance. The material, however, is in the group of hard-to-machine materials due to its abrasion to cutting tool and low thermal conductivity. In this article, the experimental results were reported on machinability of a N-AR cast iron with use of PCBN cutting tool, mainly focusing on the determination of machining conditions, possible tool life and tool wear. Cutting forces and chip morphology of the N-AR iron material were also examined during the investigation to clarify the reason of high tool wear rate in the machining.