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A titanium sheet of 5.0 mm thickness is cut by wire cut EDM process using a wire of 1.0 mm diameter. A uniform spark gap of 0.5 mm on both sides of the wire is maintained during cutting operation. If the feed rate of the wire into the sheet is 20 mm/min, the material removal rate (in mm3/min) will be
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- 150
- 200
- 300
- 400
Correct Option: B
Cross – Section Covered by wire
= (1 + 0.5 × 2) × 5 mm²
Feed rate = 20 mm/ min.
MRR rate = 20 × 5 × 2 = 200 × mm3/ min
