Analysis and Optimization of Cutting Tool Coating Effects on Surface Roughness and Cutting Forces on Turning of AA 6061 Alloy

Table 5

S/N response table for Ra and Fc.

	Control factors
	A	B	C	D
Ra
1	−0.8705	−3.9210	2.4434	−3.5967
2	−6.5568	−3.7893	−4.3784	−3.7539
3	—	−3.4307	−9.2060	−3.7904
Delta	5.6863	0.4903	11.6493	0.1937
Fc
1	−42.70	−43.94	−41.34	−42.09
2	−44.88	−43.78	−44.12	−43.93
3	—	−43.64	−45.90	−45.34
Delta	2.18	0.30	4.56	3.25

The bold numbers in the table indicate the most effective level.