3.4. Performances of different cutting tools
The average SR used in industries is selected for measurement in this SR [23].
Optimal settings for minimization of SR are obtained mostly at low level of
parameters from the above results. Figures 1-4 show that SR is varying with different
cutting tools turning on AISI316 and AISI410 at various cutting speed range.
Figures 1 and 2 show that feed rate 0.1 mm/rev, depth of cut 0.7 and 2.1mm
for AISI316. It clearly shows the best results obtained from the TiAlN than
TiCN/Al2O3 and Ti(C,N,B).
From Fig. 2, SR decreased for Ti(C,N,B) at high cutting speed. Figures 3
and 4 shows feed rate 0.1 mm/rev, depth of cut 0.7 and 2.1mm for AISI410. From
Fig. 3 and particularly from Fig. 4 one can observe that minimal SR can be
obtained using TiAlN. Figures 5 and 6 show the comparison charts for turning of
AISI316 and AISI410 by different cutting tools. Figure 5 show feed rate of 0.1
mm/rev, cutting speed 110 m/min and depth of cut 0.7 mm. Figure 6 shows feed
rate of 0.1 mm/rev, cutting speed 210 m/min and depth of cut 2.1 mm. It clearly
shows the best SR obtained from AISI316 than AISI410 for all cutting tools.
As reported by S. Thamizhmanii and B. Bin Omar to turn the martensitic
stainless steel at medium level cutting speed, high feed rate and high depth of cut
[24]. The Cutting speed found to have a significant effect on the austenitic
stainless steels machined surface roughness values Suggested by Ciftci [25].
From this study the feed rate is strongest effect on surface finish and lower feed
rate is recommended to obtain the best surface finish.