The Effect of Sand Grain Size and Water on The Green Compression Strength for Greensand Casting Mould Mixture

The focus of this research is to investigate the effect water content and sand grain size on green compression strength a greensand casting mould mixture. Grain major determinant core surface finish product. Water influences efficiency binder which bentonite clay in bonding particles thus improving strength. objective study specimen prepared by mechanical grading graded into three sizes are 425 μm, 300 μm 150 μm. Experiments carried out accordance with American Foundrymen Society (AFS) guidelines. Three ramming blows 6666 grammes Ridsdale-Dietert metric standard rammer compact cylindrical test pieces dimensions Ø50 mm×50 mm height made from varied size–water ratios bound 5% bentonite. tested for Universal Sand Strength Machine. found have superiority compared two other sizes, 3% gives maximum all samples sizes.