In precision investment casting, to make the mould the prepared pattern is dipped into a slurry. From which material is this slurry is made up of?
A)ethyl silicate
B)sodium silicate
C)both ethyl and sodium silicate
D)neither ethyl nor sodium silicate

Question

Quizplus · Accepted Answer

The slurry used in precision investment casting is made up of both ethyl and sodium silicate. These materials are used to create a ceramic shell around the wax pattern, which, after the wax is melted away, serves as the mold for the metal casting.

In Precision Investment Casting, to Make the Mould the Prepared