Material Removal Rate, Electrode Wear Rate, and Surface Roughness Evaluation in Die Sinking EDM with Hollow Tool through Response Surface Methodology

Figure 6

Recast layer: (a) experiment number 3, at  μs,  μs, and  A; (b) experiment number 10, at  μs,  μs, and  A; (c) experiment number 16, at  μs,  μs, and  A; (d) experiment number 17, at  μs,  μs, and  A.

(a)

(b)

(c)

(d)