Sodium Bentonite

MORE DURABLE GREEN STRENGTHS
While refractories are recognized as the strength of the green sand system, it is the bonding clays that facilitate form and function. Selectively mined for their unique physical and chemical properties, TRUBOND clays are the essential glues which hold the green sand system together.

TRUBOND efficiently integrates water into its lattice to develop a stronger bond without excessive energy requirements or muller retention time. This sodium dominant clay undergoes a controlled hydration that produces a stronger, more elastic adhesive with green compression strengths that are up to 50% greater than activated clays. TRUBOND molding properties are achieved with a thinner bond, which flows and coats more efficiently, is less prone to spring-back upon pattern release and offers the collateral advantage of greater permeability.

TRUBOND is also well suited for the rigors of automated high pressure molding and pouring lines. TRUBOND exhibits an extraordinary ability to retain its working bond during prolonged exposure to high heat loads, a critical attribute for foundries operating with high melt and pouring temperatures or with low sand to metal ratios. This increased working bond combined with high compressive strength and high dry strength produces a less friable sand, dramatically reducing the potential for inclusions, erosion or scabbing.

 

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