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

Table 5

GRA for nc-AlTiN/Si₃N₄ coated insert.

Run	Speed	Feed	Flank wear		Surface roughness		AVG	Grade
1	175	0.1	0.001	0.125	1.26	0.1575	0.1	4
2	175	0.3	123.33	0.10001	2.34	0.2925	0.07084	5
3	200	0.1	45.455	0.11446	0.96	0.12	0.10544	2
4	200	0.3	150.45	0.0958	2.2	0.275	0.07001	6
5	225	0.1	73.33	0.10883	0.91	0.11375	0.10504	3
6	225	0.3	220.025	0.08646	2.12	0.265	0.06614	7
7	250	0.1	80.455	0.10748	0.72	0.09	0.11624	1
8	250	0.3	987.123	0.04167	1.69	0.21125	0.04927	8