Manufacturing And Production Technology
In a metal arc welding process, metal transfer across the arc may take place by a method of material transfer where the metal transfers across the arc is in larger drops. This is at the rate of 100 drops/sec or less, what is this known as

Spray transfer
Dip transfer
GMAW practice
Globular transfer

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

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

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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.

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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