Project ForgeManufacturing Engineering
Machining Processes
GATE 2013
Medium
A steel bar 200 mm in diameter is turned at a feed of 0.25 mm/rev with a depth of cut of 4 mm. The rotational speed of the workpiece is 160 rpm. The material removal rate in mm³/s is
- A160
- B167.6
- C1600
- 1675.5
Explanation
Cutting velocity V=πDN=π×200×160/60=1675.5 mm/s. Material removal rate MRR=f×d×V=0.25×4×1675.5≈1675.5 mm³/s.
Source: GATE ME 2013 (Booklet Code A) (2013)
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