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EPC with its simple process, high precision casting size , small allowance widely used in casting production . Lost foam cast aluminum molding , lost foam coatings play a key role , and its performance is the basic guarantee for the integrity of cast aluminum parts , Preparation and Properties of lost foam is particularly important . Fly ash is one of the solid waste , serious environmental pollution and waste of resources , and thus explore the disappearance of die-cast aluminum coating to achieve the comprehensive utilization of fly ash , fly ash preparation has important practical significance . Based on the fly ash chemical composition, physical and chemical properties and mineral composition analysis , explore the lost foam prepared with fly ash water-based paint . Fly ash, bauxite and talc the refractory powder Add the composite binder composite suspensions , CMC , PVA , water . Mixing and grinding process preparation disappearance of die-cast aluminum coating . By detecting the density, viscosity, suspension, surface strength and breathability properties for coatings , analysis of the coating composition on its properties ; by coating formulation orthogonal test , optimize the distribution ratio of the coating , and the preparation of a the good performance of the disappearance of die-cast aluminum paint, and applied to the actual production of cast aluminum parts . The results showed that : LFC coatings prepared with fly ash is feasible, prepared paint coated hanging , not easy to drip , has good strength and breathability , casting after pouring sticky sand phenomenon . Suspending agent in the coating compound added in an amount of 1.5 % -2.0 % , CMC added in an amount of 0.3 % -0.5 % , the coating suspension , the strength is preferably the composite binder is added in an amount of 2.5 % -3.0 % , its adhesive properties and good surface strength .
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