Process Parameters

The variation in material removal rate with different parameters is shown graphically in Figure 23.2. In Figure 23.2 (a), the material removal rate increases with increase in mass flow rate, and after the certain limit again material removal rate decreases with increase in material removal rate. In Figure 23.2 (b), with increase in the velocity of abrasive particles material removal rate always increases. In Figure 23.2 (c), with increase in mass fraction of abrasive in jet material removal rate increases but after a certain limit again material removal rate starts to decrease. In Figure 23.2 (d), it is observed that for a certain range of nozzle tip distance material removal rate is constant but below or above this range material removal rate decreases. The nozzle tips are made of tungsten carbide or sapphire. Orifice area ranges from 0.05 to 0.2 mm². Nozzle tip distance ranges from 0.25 to 75 mm. In Figure 23.2 (e), with increase in gas pressure material removal rate always increases. The gas pressure ranges from 2 to 10 atm.

Figure 23.2 Effect of Process Parameters on Material Removal Rate in AJM