Question

Which of the following is a chipless machining method?

(a) Broaching

(b) Reaming

(c) Abrasive machining

(d) Electrical discharge

I got this question during an interview.

This key question is from Defects and Machining of Metals, Solidification of Metals topic in portion Mechanical Working Processes & Phase Transformations of Engineering Material & Metallurgy

Answer 1

The correct choice is (d) Electrical discharge

Best explanation: Chip machining forms chips due to the action of the tool being inserted into the work piece. The common chip-type machining processes are drilling, boring, planning, reaming, etc. In chipless machining, the material is removed by chemical, electrochemical, or erosion method.