Minimization of friction between the mould and casting surface can reduce the chances of tearing of thin parts of the casting.

Minimization of friction between the mould and casting surface can reduce the chances of tearing of thin parts of the casting. Correct Answer True

During solidification, prevention of sticking and tearing of the initial thin shell of the casting is a major consideration. To minimize the shell sticking and tearing, friction between the casting surface and mould wall must be kept below a critical level which depends upon the shell strength of the casting.
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