Physics, 12.02.2020 01:40, guillmar003
A casting made of cast iron weighs 4.7 kg. The riser and gating system add another 2.5 kg to the total metal poured during the operation. The melting temperature of this grade of cast iron = 1180°C, its density = 7.6 g/cm3, specific heat = 0.46 J/g°C, and heat of fusion = 126 J/g. Assume that the specific heat has the same value for solid and molten metal. Compute (a) the unit energy for melting and pouring and (b) the total energy to heat the metal to a pouring temperature of 1300°C from a starting temperature of 25°C. (c) What is the volume of the casting?
Answers: 2
= Specific heat = 0.46 J/g°C
= Change in temperature = (1300-25)°C
= Heat of fusion = 126 J/g
= Density = 
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A casting made of cast iron weighs 4.7 kg. The riser and gating system add another 2.5 kg to the tot...
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