Effect of machining parameters on surface roughness and material removal rate during hot machining of 17-7PH martensitic stainless steel

Abstract

The materials used in aerospace industry require high strength, good corrosion resistance and formability.17-7 precipitation hardened stainless steel is well suited for aerospace and other applications which have the above properties. Conventional Machining of 17-7PH stainless steel is difficult due to high tool wear, poor surface finish. In the present work an attempt is made to study the feasibility of machining the above material using hot machining process by different cutting speed, feed and depth of cut. The effect of these parameters on surface roughness and material removal rate and the optimal process parameters to minimize the surface roughness and to maximize the metal removal rate are identified.