Question

What are the values of pressure, used in backward pressure mode of electrolyte flow?

(a) 0.01 to 0.12 MPa

(b) 0.15 to 0.46 MPa

(c) 0.6 to 2 MPa

(d) 5 to 12 MPa

This question was posed to me during an interview.

My question is taken from Electro Chemical Drilling in portion Electrochemical Processes of Advanced Machining

Answer 1

The correct option is (c) 0.6 to 2 MPa

Explanation: To reduce overcut size, reverse flow of electrolyte can be used under backward pressure mode, whose value ranges between 0.6 to 2 MPa.