Calculation and Estimation of Surface Roughness and Energy Consumption in Milling of 6061 Alloy

Table 3

Experimental surface roughness results and S/N ratios.

Exp. no	V (m/min)	f (mm/rev)	DOC (mm)	Cm	Ra (μm)	Ra—S/N ratio (dB)	Rz (μm)	Rz—S/N ratio (dB)
1	60	0.10	0.5	1	1.120	−0.9844	7.2052	−17.1530
2	60	0.15	1.0	1	3.120	−9.8831	17.3440	−24.7830
3	60	0.20	1.5	2	5.460	−14.7439	31.0670	−29.8460
4	60	0.25	2.0	2	5.672	−15.0747	32.5755	−30.2578
5	120	0.10	1.0	2	2.540	−8.0967	27.4115	−28.7587
6	120	0.15	0.5	2	3.860	−11.7317	19.3407	−25.7294
7	120	0.20	2.0	1	3.120	−9.8831	23.8137	−27.5366
8	120	0.25	1.5	1	2.640	−8.4321	11.0873	−20.8965
9	180	0.10	1.5	1	1.650	−4.3497	9.3410	−19.4079
10	180	0.15	2.0	1	1.605	−4.1095	7.7330	−17.7670
11	180	0.20	0.5	2	1.580	−3.9731	9.4715	−19.5284
12	180	0.25	1.0	2	2.672	−8.5367	12.8927	−22.2069
13	240	0.10	2.0	2	2.832	−9.0419	15.8005	−23.9734
14	240	0.15	1.5	2	1.720	−4.7106	10.8800	−20.7326
15	240	0.20	1.0	1	1.498	−3.5102	8.1025	−18.1724
16	240	0.25	0.5	1	2.502	−7.9657	16.5083	−24.3541