The GATE Grind

GATE 2019 ME (ME2) – Question 26

Machining and Machine Tool Operations · Machining operations, machine tools, cutting tools and tool geometry · 1 mark · Multiple choice

Which cold-forming process presses a hardened tool against a relatively moving workpiece to produce a rough surface with a regular pattern?

  1. Roll forming
  2. Strip rolling
  3. Knurling
  4. Chamfering

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Show answer and explanation

Correct answer: (C) Knurling

Explanation

This is **knurling,C**. The tool plastically displaces surface material into a regular grip pattern rather than removing a chamfer. Roll forming and strip rolling change bulk shape or thickness rather than creating this patterned surface.