Open Access

Table 2

Machining process parameters associated with their coded value of levels.

Process parameters Coded levels

−1 0 1
Discharge current, DC (amp) 5 10 15
Gap voltage, GV (V) 1 1.5 2
Pulse-on-time, TON (μs) 100 200 300
Pulse-off-time, TOFF (μs) 10 20 30
Flushing pressure, FP (kgf/cm2) 0.2 0.4 0.6

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