20

1 2 0   . . , ,  ,  I.     ,  , ,1,             ,  ,
100
80
Foundry Sand 1
Foundry Sand 2
~J 60            Foundry Sand 3
Foundry Sand 4
Foundry Sand 5
40 6Foundry Sand 6
0   -Foundry Sand 7
Foundry Sand 8
Foundry Sand 9
20            Foundry Sand 10
_  O- Foundry Sand 11
U Foundry Sand 12
0
10                   1                   0.1                 0.01
Particle Size (mm)

Fig. 3.1.  Particle Size Distribution Curves for Foundry Sands.