3. The permeability test is used to
determine the quantity of air
passing through the sand mould
specimen under specific pressure
and time.
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6. A mould hardness test is
performed in the foundry to
determine the hardness of the
mould after the ramming of sand is
done.
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7. Hardness tester.
A sample is rammed
and the mould hardness
test is done by
measuring the depth of
penetration with the
hardness tester.
Sand
Mould
Specimen
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9. A moisture content test is
done to determine the
amount of moisture in the
moulding sand.
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10. Moisture is measured by
inserting an electric probe into
the mould sand.
As mould is wet electric current
will flow and indicate the
moisture in the sand
in the moistmeter.
mould sand
Moistmeter
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21. Green shear strength is measured
using a universal sand strength
machine that is used to determine
shear strength by applying shear
forces.
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22. Sand Mould
Sample
Universal sand strength machine
Shear
Force
Shear
Strength
Indicator
Shear
Force
Universal Sand Strength Machine
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24. Dry compression strength is
measured using a sand rammer to
make a sample and use universal
sand strength to indicate dry
compression strength.
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25. Dry Sand Mould
Sample
Universal sand strength machine
Compressive
Force
Compressive
Force
Strength
Indicator
Universal Sand Strength Machine
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