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.
A. 3000 welds/min, 75 mm/min
B. 600 welds/min, 1500 mm/min
C. 500 welds/min, 1250 mm/min
D. 22 welds/min, 55 mm/min
Answer: Option B
This Question Belongs to Mechanical Engineering >> Manufacturing And Production Technology
Weld per min = (frequency × 60)/ (cycles for weld + interval cycles)
= (50 × 60)/ (3 + 2) = 600 welds/ min.
Work speed (mm / min) = (welds/ min) / weld required per mm
= 600 / (4/10) = 1500 mm/min.
can you solve this calculation?