Optimization of Cutting Parameters during Dry Turning of Austenitic Stainless Steel Using nc-AlTiN/Si₃N₄, TiAlN, and TiN Coated Inserts

Table 3

GRA for TiN coated insert.

Run	Speed	Feed	Flank wear		Surface roughness		AVG	Grade
1	175	0.1	93.333	0.125	2.3	0.125	0.125	1
2	175	0.3	273.84	0.10817635	3.91	0.0658805	0.087028	5
3	200	0.1	98.896	0.12440374	2.29	0.0966064	0.110505	3
4	200	0.3	284.292	0.10733983	4.91	0.0550689	0.081204	6
5	225	0.1	106.719	0.1235748	1.73	0.115175	0.119375	2
6	225	0.3	357.5	0.10182469	5.74	0.0484672	0.075146	7
7	250	0.1	1736.782	0.05173933	1.501	0.125	0.08837	4
8	250	0.3	2414.659	0.04166667	6.87	0.0416667	0.041667	8