High-strength and environment-friendly water-based lost foam coating for foundry

Abstract

The invention discloses a casting-purposed high-strength environmental-friendly water-based evanescent mode coating and a preparation method thereof. The casting-purposed high-strength environmental-friendly water-based evanescent mode coating is characterized by comprising the following raw materials in percent by weight: 40-30 percent of quartz powder, 30-40 percent of high alumina, 10 percent of limestone, 12 percent of adhering agent, 5 percent of suspending agent and 3 percent of dispersing agent. The preparation method comprises the steps of: firstly, fully stirring and uniformly mixing the 5 percent of suspending agent and the 3 percent of dispersing agent, and then adding the adhering agent and uniformly mixing for later use; then reacting with main aggregates mixed for 30mins for 1h and then discharging; and during use, regulating a ratio of powder to water between 1:1-1:0.8 to meet demands of different casts. The preparation method has the advantages of wide application range, high production efficiency, simple process and energy saving; raw materials are purely-natural nontoxic materials; the casting-purposed high-strength environmental-friendly water-based evanescent mode coating has the characteristics of easiness in cleaning, small thickness and good air permeability; and the cast-purposed high-strength environmental-friendly water-based evanescent mode coating only needs to be coated 2-3 times, so that labor intensity of workers can be reduced and production cost can be lowered.

Description

technical field [0001] The invention relates to a lost foam paint for casting, especially a high-strength environment-friendly water-based lost foam paint, which belongs to the field of chemical raw materials. Background technique [0002] With the rapid development of my country's foundry industry, lost foam coatings are widely used, and their demand is increasing. The lost foam coatings produced and used at present have many shortcomings: large equipment investment, complicated process, many harmful residues, large energy waste, and low strength. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a high-strength environment-friendly water-based lost foam coating for casting and a preparation method thereof. It is characterized by wide application range, high production efficiency, simple process, energy saving, and raw materials are pure natural non-toxic substances. The dimensional accu...

AI Technical Summary

Problems solved by technology

There are many deficiencies in the current production and use of lost foam coatings: large equipment investment, complicated process, many harmful residues, large energy waste, low strength, etc.