SILICATE/CARBON DIOXIDE BOND IN FOUNDRIES - EFFECT OF SAND VARIABLES ON BOND STRENGTH.

Data are presented on the bond strengths of anumber of CO//2 Process sands based on sodium silicate/sand mixtures of increasing degrees of fineness and presents data on their surface finish and storage properties. The importance of tensil strength is stressed in the article, the property being considered particularly relevant to the thinner type of core required for immediate use on a mechanized molding system.