The Friability Tester is used to determine the friability (surface integrity) of a clay bonded foundry molding sand by measuring the ability of compacted molding sand to resist abrasion or scuffing within the first few millimeters at the surface of a prepared mold.  A high molding sand friability can indicate a tendency to produce sand inclusions on the finish castings and loss of casting quality.

The machine is easy to operate via the digital user interface and requires very little maintenance due to the totally enclosed drive system.  The instrument consists of two standard 2″ x 2″ AFS (50mm x 50mm metric) specimens placed side-by-side in a cylindrical screen and rotated against each other.  While rotating within the cylindrical screen, sand is removed from the two sand specimens.  The dislodged sand drops through the wire mesh cage into a catch pan positioned directly below the rotating cylindrical screen.  After rotating the sand specimens for one minute, the screen will automatically stop.  The sand that is collected in the catch pan is weighed.  The weight of sand removed, divided by the original weight of the specimens and multiplied by 100 is reported as a percentage representing molding sand friability.

Components Included: Rotating Drum Assembly, Catch Pan, Power Cord and 2.5 mm Allen Wrench