Statistical Modeling and Optimization of Laser Cladding Stellite 6/WC Composite Coating

Table 6

Variance analysis of the surface flatness.

Source	Sum of squares	Df	Mean square	F
Model	0.2961	14	0.0211	2.59	0.0429	Significant
LP	0.0789	1	0.0789	9.66	0.0077
V	0.0320	1	0.0320	3.92	0.0676
CSD	0.0493	1	0.0493	6.04	0.0277
WCC	0.0263	1	0.0263	3.22	0.0942
Residual	0.1143	14	0.0082
Lack of fit	0.0610	10	0.0061	0.4578	0.8558	Not significant
Pure error	0.0533	4	0.0133
Correlation total	0.4104	28
R^2	0.7215			Adeq precision	5.2830