Manufacturing And Production Technology
Crack in grinding wheel is developed due to

Low speed of wheel
High temperature developed at the contact of the wheel face and work
High speed of wheel
Grinding hard work

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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.

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

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