Paper Title
Investigation of the Machinability of Vanadis 30 Powder Metallurgical Steel with Taguchi Method

Abstract
In this study, the machinability of vanadis 30 steel with coated and uncoated CBN cutting tools was investigated. The turning tests were carried out through turning at four cutting speeds (125, 175, 225, 300 m/min), four feed rates (0.05, 0.1, 0.15 and 0.20 mm/rev) and at a constant depth of cut (0.25 mm). The results showed that increasing cutting speed decreases the cutting force. It was observed that increasing cutting speed decreases the surface roughness but increasing feed rate increases the surface roughness. It was also observed that increasing cutting speed and feed rate increase the resultant cutting force. The lowest cutting force was obtained in the experiment performed with a cutting speed of 225 m/min and a feed rate of 0.05 mm/rev. Index Terms - Vanadis 30, machinability, CBN tool, surface roughness, taguchi method,.