Question

What are the values of roundness and straightness obtained from machining using ECS?

(a) 0.001 mm

(b) 0.003 mm

(c) 0.007 mm

(d) 0.013 mm

This question was posed to me at a job interview.

My question comes from Electrochemical Superfinishing-Introduction, Material Removal, Process accuracy in division Hybrid Electrochemical Processes of Advanced Machining

Answer 1

Correct answer is (c) 0.007 mm

Easy explanation: The values of roundness and straightness obtained from machining by Electro chemical superfinishing process is about 0.007 mm.