SUSPENSION FOR PRODUCTION OF SHELL MOLDS IN INVESTMENT CASTING

摘要

FIELD: casting. SUBSTANCE: suspension contains, wt.%: water glass, 23.0-30.0; ferrochromium slag, 0.5-5.0; surfactant, 0.2-0.3; pyrogenic colloidal silicon, 1.5-20; refractory filler, the balance. Pyrogenic colloidal silicon slows interaction of water glass with ferrochromium slag and increases life of suspension, refractoriness and thermal stability of ceramics. EFFECT: reduced cost of casting, increased casting quality and decreased pollution of environment. 4 tbl