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Finishing

Once the melted metal is solidified, it is possible to proceed with the opening of the moulding boxes, with the removal of the sand and with the "extraction" of the casting.

Subsequently, it is necessary to remove from the raw casting all the metallic burrs and fins, as well as castings and risers.

Grit blasting is the next phase, and it consists in hitting with metallic grit the raw casting.

This proceeding consents to remove the residual sand that, during casting process, have adhered to the raw casting.

Such process consents moreover to eliminate the surface oxidation film, that it forms during cooling of the casting.