The heat transfer efficiency in arc welding of a plate using a current of 250 A at 20 V is 90%
Q. The heat transfer efficiency in arc welding of a plate using a current of 250 A at 20 V is 90%. The heat required to melt the material is 10 J/mm3. If the cross-sectional area of the weld joint is 30 mm2 and the travel speed is 5 mm/s, the melting efficiency (in %) is_____(round off to 2 decimal places)
Ans: 30.00-34.00
Sol:
