Low-carbon-residue high-temperature-creep-resisting lost foam casting water-based paint with nanophase ceramic powder solution enhancement function and preparation method of water-based paint

Abstract

The invention relates to the technical field of lost foam casting, in particular to low-carbon-residue high-temperature-creep-resisting lost foam casting water-based paint with a nanophase ceramic powder solution enhancement function and a preparation method of the water-based paint. According to the paint, high-alumina bauxite and microporous light mullite which are different in particle size are mixed as refractory aggregate, and good air permeability, the low heat conduction coefficient and good high-temperature volume stability are achieved; by means of a mixed suspending agent prepared from a transparent nanophase ceramic powder solution, clay powder, sodium carboxymethylcellulose and other materials, the suspension property of the materials is improved, and the effects of enhancement, toughening and the like are achieved; and added nano ceric oxide has the oxygen storage capacity, oxygen can be released in the pouring process, the oxidization combustion efficiency of plastic is improved, and carbon residues are reduced. The prepared paint is compact and smooth in coating, resistant to high-temperature creep, stable in forming, not likely to collapse or break and easy to clean, and a prepared casting is fewer in impurity on the surface and better in quality.

Description

technical field [0001] The invention relates to the technical field of lost foam casting, in particular to a low carbon residual high temperature creep resistant water-based coating for lost foam casting reinforced by a solution containing nano-ceramic powder and a preparation method thereof. Background technique [0002] The coating for lost foam refers to a layer of special coating coated on the outer surface of the pattern during the lost foam casting process. It plays a key role in the casting process. Since the pattern is made of foam plastic, the gas permeability of the coating , coating strength, rheology and other properties will have a crucial impact on the casting product. The lost foam coating with excellent performance should meet the following requirements: (1) It can help improve the strength and rigidity of the foam plastic pattern and prevent the pattern from being damaged and deformed. (2) It has the function of isolation, which separates the molten metal fr...

AI Technical Summary

Problems solved by technology

[0003] The composition of lost foam coatings mainly includes refractory aggregates, adhesives, solvents, suspending agents and various additives. According to the nature of the binder used, it is mainly divided into water-based coatings, alcohol-based coatings, resin coatings, etc. Among them, water-based coatings are widely used in actual production because of their low cost. However, water-based coatings are easy to collapse and stick to sand when the coating is cleaned, and most of the products still have defects in the performance of the products. described effect