Question

Flow ability increases with increase in the green strength.

(a) True

(b) False

This question was addressed to me in class test.

My question is taken from Properties of Moulding Sand topic in chapter Pattern Materials & Moulding Sand Tests of Foundry and Forging

Answer 1

Right choice is (a) True

To explain I would say: Flowability or plasticity is the ability of the sand to get compacted and behave like a fluid. It will flow uniformly to all portions of a pattern when rammed and distribute the ramming pressure evenly all around in all directions. Generally, sand particles resist moving around corners or projections. In general, flowability increases with a decrease in green strength and vice versa.