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Silica
Core and Molding Sands |
SURFACE
AREA & BINDER OPTIMIZATION
INCAST round grain 50 mesh/300 µm |
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INCAST foundry sands improve the core making, molding and
casting process with more efficient placement, better binder
performance, and faster evacuation of heat and gases. Engineered
size distributions produce the lowest possible surface area,
and the ideal conditions to maximize tensile strength while
reducing resin, catalyst and additive consumption and workplace
emissions.
Surface area remains the key to maximize strength and minimize
variation for the highest possible production yield. The smoother
and more uniform the grain the lower its total surface area
and associated binder requirements. INCAST sands are further
improved by careful control of the grain size distribution,
including restricting the percentage of counterproductive
ultra-fines. When geometry and grain size distribution are
combined with density, the result is the highest tensile strength
possible from silica sand.
 The
lower total surface area of INCAST foundry sand requires less
resin, catalyst and additives to produce a durable refractory
mass. As a result of this lower resin requirement, the integrity
of critical passageways between grains is maintained to maximize
heat, air or gas flow for optimal binder catalyzation and
curing. This lower total binder requirement means less energy
is required for mixing, and desired tensile strengths can
be achieved with lower workplace and stack emissions.
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