Advances in Materials Science and Engineering / 2021 / Article / Tab 4 / Research Article
[Retracted] Optimization of CNC End Milling Process Parameters of Low-Carbon Mold Steel Using Response Surface Methodology and Grey Relational Analysis Table 4 Roughness (R a
Response surface linear model Analysis of variance Source Sum of squares df Mean square F -valueModel 27.52382748 4 6.88095687 636600.00 <0.0001 Significant A 18.45715248 1 18.45715248 628620.00 <0.0001 B 5.2272 1 5.2272 68590 <0.0001 C 0.183027 1 0.183027 5998618.94 <0.0001 D 3.656448 1 3.656448 1834573.15 <0.0001 Residual error 1.58333 24 0 Lack of fit 0 20 0 Pure error 0 4 0 Cor total 27.52382748 28 Standard deviation 0.000397911 R 2 0.999998975 Mean 0.54264 Adj R 2 0.99999754 CV (%) 0.073328765 Pred R 2 NA PRESS NA Adequate precision 3152.502951
