Material Removal Rate, Electrode Wear Rate, and Surface Roughness Evaluation in Die Sinking EDM with Hollow Tool through Response Surface Methodology
Table 2
Factors and their levels.
Serial number
Symbols
Input factors
Levels
Units
1
2
3
1
A
Pulse on time
100
340
580
s
2
B
Pulse off time
4
16
28
s
3
C
Peak current
5
25
45
A
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