Energy-saving type water group lost mould casting paint

Abstract

The invention discloses energy-saving type water group lost mould casting paint, which comprises a fireproof material, an adhesive, a suspension agent, an auxiliary agent and water, wherein the fireproof material is a composite fireproof material and comprises bauxite, zircon flour and pagodastone in parts by weight according to the mixture ratio of 20-40:60-80:5-10. The paint comprises the following components according to the mixture ratio, by weight percent: 60-80% of composite fireproof material, 0.5-3% of adhesive, 1-2% of suspension agent, 0.5-2% of auxiliary agent and the balance of water. The paint adopts the composite fireproof material under a precondition of ensuring the fire resistance of the paint, and the consumption of resource type materials in the lost mould paint is greatly reduced; the mixture ratio of the mixed paint of the invention can induce the high-temperature encrustation of the paint, the paint is easy to strip off from a cast, the energy consumption of sand removal is reduced, and the possibility of the generation of diversified defects at the surface of the cast is also reduced by the flaky stripping of a sintered paint layer during sand removal. Moreover, the pollution action of the components of the paint to the environment is also reduced greatly by adopting the phosphate auxiliary agent.

Description

technical field [0001] The invention relates to a coating for casting, in particular to a coating for lost foam. Background technique [0002] Existing lost foam coatings rely on the physical and chemical inertness of their refractory powders at high temperatures to produce anti-sand effects, and pursue materials with high refractoriness, so the selection of refractory materials is relatively simple. The existing lost foam coating cannot be peeled off in pieces during sand cleaning, which easily causes various defects on the casting surface. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a water-based lost foam coating for casting that is more conducive to peeling off gradually after sintering and more cost-effective. [0004] In order to solve the problems of the technologies described above, the technical solutions provided by the invention are as follows: [0005] An energy-saving casting water-based lost f...

AI Technical Summary

Problems solved by technology

[0002] Existing lost foam coatings rely on the physical and chemical inertness of their refractory powders at high temperatures to produce anti-sand effects, and pursue high refractoriness materials, so the selection of refractory materials is relatively simple

Existing lost foam coatings cannot be peeled off in pieces during sand cleaning, which may easily cause various defects on the surface of castings

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