Abstract - This paper presents the effect of process
parameter in turning operation to predict surface
roughness and material removal rate (MRR). The
turning process by using bank a 34 lathe machine.
The parameters that affect the turning operation are
vibration, tool wear, surface roughness, material
removal rate etc. Among this surface roughness and
material removal rate are an important factor that
affects the quality in manufacturing process. The
main objective of this paper is to predict the surface
roughness and material removal rate on EN -31
alloy steel by using coated carbide tool. A
mathematical model is developed using regression
technique and optimization is carried out using Box-
Behnken of response surface methodology.
Therefore, this study attempts the application of
response surface methodology to find the optimal
solution of the cutting conditions for giving the
minimum value of surface roughness and maximum
MRR .