Applications
Foundry
molds and cores
Recommended products:
Sodium Silicate Liquids
How it works: Silicates are used as binders to form molds
and cores from sand, into which molten metal is poured. Sugars, carbohydrates
and/or surfactants are usually added to the silicate to improve shakeout
(removal of metal part from mold) and to obtain better sand reclamation.
Silicates are mixed with sands and reacted with either CO2 gas or esters to set
(acid-set systems). Silicates have these advantages:
Quick, strong set with easy-to-handle materials
Low VOCs during setting and pouring of metal
Work with a variety of sand types and metals
Easy storage and cleanup of materials
Environmentally friendly system
Recommended literature:
Soluble Silicates in Bonding and Coating
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