Green Sand Expert


Our "Green Sand Expert" tests the physical properties of the molding sand discharge from the sand mixer

This data is used as feedback to control the mixing process and keep the prepared sand properties under control and at set point levels determined by the foundry.  The Green Sand Expert model ETA is manufactured and sold in the USA.

The Green Sand Expert model ETA2000 is used to measure and control compactability

The Green Sand Expert model ETA3000 is used to measure and control compactability, green compression strength and moisture.

The Green Sand Expert model ETA3500 is used to measure and control compactability, green compression strength, moisture and permeability

Typical Installation for a batch mixer with a side discharge

Pictured is the European TVE manufactured by Belloi and Romagnolli.

Typical Installation for a continuous mixer or batch mixer with a center bottom discharge

The Green Sand Expert control system controls the properties of the prepared sand by precisely controlling the amounts of water, bentonite, new sand, spent sand charged and mixing time in the mixer.  By accurately probing the properties of the ingredients charged into the mix and testing the prepared properties of the mix, the Green Sand Expert is able to control the level of compactability for the prepared sand within +/-3 points of the set point value.

Key Benefits

  • Uniform Repeatable Sand Quality
  • Unsupervised Sand Plant Operation - No Operator Required
  • Improved Molding Rates
  • Reductions In Scrap
  • Improved Surface Finish
  • Fast Payback (Typically under 1 year)

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Copyright 2002 GreenSand Controls LLC
Last modified: 02/10/04

*Green Sand Controls LLC and Green Sand Controls s.r.l. are not related to in any manner, are not sponsored by, nor approved by Hartley Controls Corporation.