The advent of High Volume, High Density & High-Pressure Moulding Lines has changed the logistics of Molding Techniques and selection of additives significantly. Having 4 main ingredients, Base Sand, Bentonite, Lustrous Carbon Additives & Water, the properties of the Sand Mold resulting from this simple mixture to deliver target casting quality is complexly variable. Sand Control is an “Art” as any foundry man will willingly emphasize. It is well accepted that no two-foundry sand systems are the same. Even a single foundry Unit or foundry group having two or more molding lines, along with separate Sand preparation lines, whether in the same campus or in different locations, sand preparation and sand parameters will normally differ in each sand loop The role of quality in additives has therefore become even more important than when one could “feel” the sand & make changes accordingly. Now, additives and ingredients have to be engineered precisely for the application with assured reproducibility in chemistry, grain fineness & other parameters.
reproducibility, grain fineness, parameters
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