Calculation of Material Removal Rate
MRR = (W_{i} - W_{f}) × 1000/ 7.8 × T .......................................... (1)
W_{i} = Initial weight of work piece
W_{f} = Final weight of work piece
T = Period of trials
Density of material (M.S.) = 7.8
In our experiment we have taken 3 process parameters, (1) Pulse on time (2) Current (3) gap voltage. By varying one parameter with respect to other two we find weight loss (gm) for our material. By adding this weight loss in the equation (1) MRR can be calculated.