Machinability Performance Investigation of TiAlN-, DLC-, and CNT-Coated Tools during Turning of Difficult-to-Cut Materials

Table 5

Experimental machining parameters.

Level/parameter	Speed of cutting (m/min)	Cutting depth (mm)	Rate of feed (mm/rev)
Level 1	250	0.3	0.20
Level 2	350	0.5	0.25
Level 3	450	0.8	0.30