[Retracted] Optimization of CNC End Milling Process Parameters of Low-Carbon Mold Steel Using Response Surface Methodology and Grey Relational Analysis

Table 12

Confirmatory runs.

Optimization tool	A (rpm)	B (mm)	C (mm/min)	D (l/min)	Ra (microns)	MRR (IPM)	Pc (HP)
Box–Behnken	2495.75	0.47	1000.01	8	1.543	0.916658	0.843122
GRA	2500	0.2	1500	6	1.398	0.8296	0.7961
Deviation					0.154	0.087	0.047
% deviation					10	9	6