Machinability of high strength cast iron alloys in dry-cut face milling operations

Abstract

The advancement of cast iron alloy properties has enabled increased efficiency in automotive vehicles. Nevertheless, this progress is accompanied by a growing demand for more durable tools with higher resistance to successfully execute cutting operations. This work conducts an investigation of the machinability of different high-strength cast iron alloys. The parameter used was the machining time determined by the maximum flank wear of 0.4 mm. The machining process used was face milling with no cutting fluid, of which the cut depth and the penetration were kept constant at 1 and 60 mm, respectively. The input variables were the tool feed of 0.1 and 0.2 mm/tooth and the cutting speed of 230 and 350 m/min. The results showed that FV450 was the material that presented the highest wear values, followed by FC300(Mo+RG) and FC300(Mo). On the other hand, the FC250 demonstrated the longest machining time, resulting in an extended lifespan.