Foundry Binders

PQ Soluble Silicates are used effectively as binders where heat stability or resistance to chemicals is required. Silicate binders develop high green strength by air-setting without heat. They also impart increased fired strength.

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
Applications
Foundry molds and cores
Health, Safety &
Environment
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