Question

Which test is performed for the study of grain size distribution of moulding sand?

(a) Screening test

(b) Whirl test

(c) Crushing test

(d) Shearing test

The question was posed to me in unit test.

Query is from Green Sand Mould in section Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

Answer 1

Correct option is (a) Screening test

Easiest explanation: Screening test is performed by taking a fixed sample weight of sand and screening it through standard sieves. It is accomplished by shaking the sieves. The amount of sand that collects in the different sieves is then plotted, and then a distribution of grain size is computed.