CORE OR FOUNDRY SAND COATED AND/OR MIXED WITH WATER GLASS, HAVING A WATER CONTENT IN THE RANGE OF ≥ APPROXIMATELY 0.25 WT. TO APPROXIMATELY 0.9 WT.

摘要

The present invention relates to a core or foundry sand that can be used for producing cores and casting molds for casting metal melts, comprising a foundry base material, coated with a layer of a bonding agent and a layer of water glass arranged on top, and having a water glass content in the range of approximately 0.25 wt.% to approximately 0.9 wt.% relative to the total weight of the core and foundry sand.