Prediction of Surface Roughness and Optimization of Cutting Parameters of Stainless Steel Turning Based on RSM

Table 5

Analysis of the surface roughness of 1Cr18Ni9Ti and the significance of various factors.

Source	Degree of freedom	SS	MS	F	P
Model	9	0.832526	0.092503	23.67	0.000
Linear	3	0.606969	0.202323	51.77	0.000
X1	1	0.020612	0.020612	5.27	0.045
X2	1	0.09526	0.095258	5.46	0.042
X3	1	0.565013	0.565013	144.57	0.000
Square	3	0.185308	0.061769	15.81	0.000
	1	0.066379	0.066379	16.98	0.002
	1	0.25152	0.25152	6.44	0.030
	1	0.096305	0.096305	24.64	0.001
2-Way Interaction	3	0.040249	0.040249	3.43	0.060
	1	0.007812	0.007812	2.00	0.188
	1	0.000684	0.000684	0.18	0.684
	1	0.031752	0.031752	8.12	0.017