Question

During roughing process through Electro discharge machining, what is the thickness of layer formed?

(a) <0.075 mm

(b) <0.125 mm

(c) <0.500 mm

(d) <0.750 mm

I had been asked this question in homework.

I'd like to ask this question from EDM-Heat Affected Zone (HAZ) in division Thermal Processes of Advanced Machining

Answer 1

Right answer is (b) <0.125 mm

To explain I would say: The thickness of layer obtained after machining is <0.127 mm in EDM.