Manufacturing And Production Technology
Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles ‘on’ and 2 cycles ‘off’ Power supply is at 50 Hz.

3000 welds/min, 75 mm/min
600 welds/min, 1500 mm/min
500 welds/min, 1250 mm/min
22 welds/min, 55 mm/min

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Manufacturing And Production Technology
In determining the various forces on the chip, Merchant assumed that the

Cutting edge of the tool is sharp and it does not make any flank contact with the workpiece
All of these
Only continuous chip without built-up-edge is produced
Cutting velocity remains constant

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