To determine permeability number of green sand, core sand and raw sand

LEARNING OBJECTIVES:

LO1: To define permeability and explain why it is an essential property of moulding sand.

LO2: To understand how the sand permeability number (PN) is calculated using the given formula.

LO3: To use the permeability equation to compute the permeability number (PN) for different types of sand.

LO4: To understand the impact of grain size and binder content on the permeability of sand.

Material used:

green sand, core sand and raw sand

Apparatus used:

Sand rammer, Permeability meter, Stopwatch, Specimen tube