Question

What is the value of the current density used in Electrochemical machining?

(a) 0.01 – 0.4 A/mm^2

(b) 0.5 – 5 A/mm^2

(c) 6 – 15 A/mm^2

(d) 20 – 50 A/mm^2

The question was posed to me during an interview for a job.

This interesting question is from ECM-Theory of ECM topic in division Electrochemical Processes of Advanced Machining

Answer 1

Right option is (b) 0.5 – 5 A/mm^2

To explain: High current densities, which range between 0.5 – 5 A/mm^2 are used in ECM.