A Study on Finished Surface Roughness of a Nitriding Spheroidal Graphite Cast Iron

This paper describes finished surface roughness when an orthogonal cutting operation for a spheroidal graphite cast iron, whose surface is hardened by a plasma nitriding, is carried out. It is generally known that cutting operations of a plasma nitriding workpieces is very difficult due to hard surface. High-precision and high-efficiency cutting for normal spheroidal graphite cast iron have not been obtained by changing a cutting tool rake angle...