Anti-crack enhanced complexing agent for fired mold precision casting paint and application thereof

Abstract

The present invention belongs to the field of fired mold casting, and in particular relates to an anti-crack enhanced complexing agent for fired mold precision casting paint and application thereof. The anti-crack enhanced complexing agent for fired mold precision casting paint is characterized by comprising 0.01%-30% of hydroxypropyl methylcellulose cellulose, 0.1%-60% of alkylphenol ethoxylates and the balance of deionized water. The complexing agent can reduce the viscosity of casting refractory coating and keep the viscosity of the coating unchanged, has better stability, does not deteriorate, and also increases the fineness of the product and effectively prevents cracking of fired mold casting shell. A right amount of wind speed can be used for drying to accelerate the drying and to improve the flowability of the coating. The obtained high-concentration slurry has good flow properties, and is easy to promote the use of low-cost refractory material.

Description

technical field [0001] The invention belongs to the field of investment casting, and in particular relates to an anti-crack enhancing complexing agent for investment precision casting coatings and an application thereof. Background technique [0002] In the field of investment precision casting with silica sol as the binder process, there is generally a disadvantage of high manufacturing costs, because zircon powder, a refractory material used for the surface shell, is a scarce resource and expensive. However, the value of the surface layer slurry accounts for 48% of the cost of raw and auxiliary materials for the mold shell, and accounts for 10% of the total production cost. Therefore, the precision casting industry at home and abroad are trying to use fused quartz, fused corundum, and kaolin stone instead of zircon powder. However, due to the light specific gravity of these materials, the powder-to-liquid ratio of the powder and liquid added to the coating will be low, an...

AI Technical Summary

Problems solved by technology

However, due to the light specific gravity of these materials, the powder-to-liquid ratio of the powder and liquid added to the coating will be low, and the coverage of the slurry on the wax module will be thin, and the interlayer strength will be insufficient and easy to crack. Insufficient high temperature strength, resulting in defects such as sand sticking and burrs in castings