Performance comparison of CBN insert and uncoated insert in novel CNC green machining of Ss316l stainless steel for minimizing surface roughness.

This research work deals with comparing performance of Cubic boron Nitride (CBN) insert and uncoated cemented carbide insert on the workpiece SS316L stainless steel for improving surface roughness (SR) during CNC process. Materials and Methods: The component used in this work was SS316L stainless steel. The control group had uncoated tools while the experimental group contained CBN tools. Each group contains 27 samples were machined in a CNC turning machine by using the input parameters such as cutting speed, feed rate and depth of cut. Results: Mean SR value obtained for CBN tool and uncoated tool were 0.787007 µm and 0.901919 µm correspondingly with a significance value of 0.021(p<0.05). Conclusion: Inside the constraints of this trial, CBN tools during newer tooling offer a marginally superior surface finish than uncoated tools. [ABSTRACT FROM AUTHOR]