Table 12 Comparison of experimental results with predicted results.

From: Parametric optimization of graphite powder-mixed electrical discharge machining of Ni-Cr dental alloy by response surface methodology

Response type

Experimental value

Predicted value

Deviation

Percent error (%)

MRR (mm3/min)

8.06939

9.75245

−1.68306

20.86%

EWR (mm3/min)

0.0188632

0.0220672

−0.003204

16.99%

Ra (µm)

6.805

6.72466

0.08034

1.18%

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