Influence of End Milling Process Variables on Material Removal Rate and Surface Roughness of Direct Metal Laser Sintered Inconel 718 Plate

Table 4

Orthogonal array (L₉) and its output responses for the end milling experiments.

Experiment no.	Cutting speed (m/min)	Feed rate (mm/min)	Depth of cut (mm)	MRR (mm^3/min)	Surface roughness (μm)	SNRA-1	MEAN-1	SNRA-2	MEAN-2
1	75	50	0.1	630	0.69	55.98681	630	3.223018	0.69
2	75	75	0.2	1052	0.74	60.44031	1052	2.615366	0.74
3	75	100	0.3	1580	0.82	63.97314	1580	1.723723	0.82
4	100	50	0.2	789	0.61	57.94154	789	4.293403	0.61
5	100	75	0.3	1256	0.7	61.97979	1256	3.098039	0.7
6	100	100	0.1	994	0.648	59.94773	994	3.7685	0.648
7	125	50	0.3	1098	0.545	60.81205	1098	5.27207	0.545
8	125	75	0.1	974	0.635	59.77118	974	3.944525	0.635
9	125	100	0.2	1491	0.775	63.46955	1491	2.213966	0.775