What factors affects surface finish during EDM ?
The amount of material removed and the surface finish produced is dependent upon the current in the spark. The material removed by the spark can be assumed to be a crater. The amount removed therefore will depend upon the crater depth, which is directly proportional to the current. Thus as the material removed increases and at the same time, the surface finish also decreases. However, decreasing the current in the spark, but increasing its frequency will improve the surface finish in view of the small crater size, but at the same time, the material removal rate can be maintained by increasing the frequency.
How to Calculate Overcut constant B?
Overcut constant B calculator uses Overcut Constant B = Overcut in mm per side-(Overcut Constant A*Capacitance in Surface Defect^0.333) to calculate the Overcut Constant B, The Overcut constant B formula is defined as an empirical constant used to calculate overcut produced in EDM process. Overcut Constant B is denoted by B symbol.
How to calculate Overcut constant B using this online calculator? To use this online calculator for Overcut constant B, enter Overcut in mm per side (O), Overcut Constant A (A) & Capacitance in Surface Defect (Csd) and hit the calculate button. Here is how the Overcut constant B calculation can be explained with given input values -> 2.5 = 5-(1.4*5.70416541^0.333).