FORMING OF SAND MOULD AND SAND MOULD

摘要

FIELD: metallurgy.SUBSTANCE: sand mould is made of sand, surfactant, water and liquid glass. Molar ratio between silicon dioxide and sodium oxide in liquid glass makes 0.65-1.30. Mix components are mixed. Sand mix is compacted to produce sand mould and cured.EFFECT: higher quality of cast owing to produced gaseous hydrogen.8 cl, 10 dwg