Method of producing low viscosity casting parts resin sand core casting paint

Abstract

The invention provides a preparation method for low viscosity casting resin sand core molding coating. Hydromica powder, sea-foam powder and bentonite is mixed together by the ratio of 1:0.5: 0.5 to form 2 percent of suspension, which is mixed uniformly with 33 percent of water under low speed stirring, and then 2 percent of polyvinyl alcohol is added in the mixture; after dissolving polyvinyl alcohol, the mixture is added with 21 percent of zircon powder, 24 percent of brown corundum, 6 percent of porzite, 6 percent of scale graphite and 6 percent of magnesium olivine, and then is stirred uniformly and continuously, at last, finished product is realized. The invention has the advantages of no pollution, low viscosity, no poison and rapid drying and can improve casting quality and productivity.

Description

technical field [0001] The invention relates to a method for preparing low-viscosity casting resin sand core casting paint. Background technique [0002] At present, alcohol-based casting coatings release toxic and harmful gases in the process of ignition and drying, which seriously pollutes the air, and there are many hidden dangers and high costs. They are gradually replaced by water-based casting coatings. The flow coating of existing casting coatings 1. The dip coating process puts forward high requirements on the performance of coatings. Flow coating and dip coating coatings have low viscosity and low solid content. Dip-coating coatings are required in terms of suspension, rheology, and anti-sand sticking properties. Contents of the invention [0003] The object of the present invention is to overcome above-mentioned defect, provide a kind of low-viscosity casting resin sand core mold coating preparation method. [0004] The technical scheme of the present invention...

AI Technical Summary

Problems solved by technology

[0002] At present, alcohol-based casting coatings release toxic and harmful gases during ignition and drying, seriously polluting the air, and there are many hidden dangers and high costs. They are gradually replaced by water-based casting coatings. The flow coating of existing casting coatings 1. The dip coating process puts forward high requirements on the performance of coatings. Flow coating and dip coating coatings have low viscosity and low solid content. Requirements for suspension, rheology, and anti-sand sticking properties of dipping coatings