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Prevention of Corrosion

Molten cast i...

Question

Molten cast iron is poured into moulds to make different shapes. Which specialty of cast iron is based for it ?

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Solution

The specialty of cast iron for this is that molten cast iron on cooling solidifies.

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Q. A vertical brick duct (tube) is filled with cast iron. The lower end of the duct is maintained at a temperature

T_{1}

which is greater than the melting point

T_{m}

of cast iron and the upper end at a temperature

T_{2}

which is less than the melting point of cast iron. It is given that the conductivity of liquid cast iron is equal to

k

times the conductivity of solid cast iron. The fraction of the duct filled with molten metal is given as

\frac{l_{1}}{l} = \frac{x k (T_{1} - T_{m})}{k (T_{1} - T_{m}) + (T_{m} - T_{2})}

x

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