
400 Fundamentals of Machining Processes
Wheel wear ranges from 100:1 to 0.1:1 with an average of 3:1 depending
upon the current density, workpiece material, wheel material, dielectric,
and sharpness of corner details. Material removal rates ranges from 0.16 to
2.54 cm
3
/min and surface nishes up to 1.6–3.2 μm range are possible. Corner
radius depends on overcut and ranges from 0.013 to 0.13 mm. Greater voltage
permits larger gaps, which makes the process suitable for plunge grinding
where the ease of dielectric ushing is ensured. Tolerances of ±0.005 mm are
normal with ±0.0013 mm possible.
Texturing: Electrodischarge texturing (EDT) is achieved ...