Investigation on Effect of Material Hardness in High Speed CNC End Milling Process

Table 4

ANOVA for Response-1 surface roughness ().

Source	Sum of; squares	df.	Mean; square	-value	value; Prob. >
Model	22.50	14	1.61	17.27	<0.0001
, speed	14.04	1	14.04	150.91	<0.0001
, feed	1.06	1	1.06	11.42	0.0045
, DoC	0.046	1	0.046	0.49	0.4952
, insert type	0.84	1	0.84	9.00	0.0095
	0.13	1	0.13	1.39	0.2576
	0.18	1	0.18	1.90	0.1901
	0.96	1	0.96	10.32	0.0063
	0.72	1	0.72	7.77	0.0146
	0.53	1	0.53	5.65	0.0323
	0.078	1	0.078	0.84	0.3742
	0.31	1	0.31	3.29	0.0914
	0.012	1	0.012	0.13	0.7229
	0.24	1	0.24	2.53	0.1342
	2.90	1	2.90	31.22	<0.0001