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

Table 4

GRA for TiAlN coated insert.

Run	Speed	Feed	Flank wear		Surface roughness		AVG	Grade
1	175	0.1	0.005	0.125	2.07	0.054844	0.08992	4
2	175	0.3	153.333	0.09618	2.78	0.041667	0.06892	5
3	200	0.1	60.899	0.11171	1.54	0.071793	0.09175	3
4	200	0.3	230.45	0.08619	2.3	0.049747	0.06797	6
5	225	0.1	80.422	0.10802	1.11	0.095817	0.10192	2
6	225	0.3	280.42	0.08075	2.2	0.051842	0.0663	7
7	250	0.1	86.667	0.1069	0.81	0.125	0.11595	1
8	250	0.3	1023.382	0.04167	2.71	0.042678	0.04217	8