During a gas metal arc welding process, mild steel of diameter 1mm is being fed at a constant velocity. The density, specific heat and melting temperature of the mild steel wire are 7800 kg m3 J 1000- kak and

Elements Of Electromagnetics
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7) During a gas metal arc welding process,
mild steel of diameter 1mm is being
fed at a constant velocity. The density, specific
heat and melting temperature of the mild steel
kg
J
wire are 7800
m3
1000-
and
kgK
1435°C respectively. Assume the ambient
temperature to be 25 C and neglect the
latent heat of fusion. If the total amount of heat
required to melt the weld metal is 1080W ,
calculate the wire feed speed in ().
m
a. 0.25
b. 0.5
c. 0.002
d. 0.125
Transcribed Image Text:7) During a gas metal arc welding process, mild steel of diameter 1mm is being fed at a constant velocity. The density, specific heat and melting temperature of the mild steel kg J wire are 7800 m3 1000- and kgK 1435°C respectively. Assume the ambient temperature to be 25 C and neglect the latent heat of fusion. If the total amount of heat required to melt the weld metal is 1080W , calculate the wire feed speed in (). m a. 0.25 b. 0.5 c. 0.002 d. 0.125
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