Which of the following is not the function of coating of refractory ma – McqOptions

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1.	Which of the following is not the function of coating of refractory materials on the mould?
A.	Prevent the soldering of metal to the mould
B.	Minimize thermal shock to the mould
C.	Control the rate of casting solidification
D.	Increase the heat transfer rate
Answer» E.

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