Alcohol-based casting coating for lost foam casting and manufacturing method thereof

Abstract

The invention discloses an alcohol-based casting coating for lost foam casting. The alcohol-based casting coating is characterized by being composed of, by weight, four parts to seven parts of silicon metal powder, 55 parts to 70 parts of zirconium mullite, 30 parts to 40 parts of iron-ore slag, 25 parts to 35 parts of ferrovanadium slag, 0.4 part to 0.8 part of tungsten disulfide, 0.5 part to 0.7 part of zirconium phosphate, 0.3 part to 0.6 part of nanocrystalline cuprous oxide, 1 part to 2 parts of attapulgite, 6 parts to 10 parts of peat, 2 parts to 4 parts of pine needle oil, 6 parts to 9 parts of polyvinyl alcohol carboxy butyl aldehyde, 50 parts to 60 parts of ethyl alcohol and 3 parts to 6 parts of auxiliaries. The coating manufactured through the method has the excellent thermal insulation property and good suspension property and abrasive resistance. The coating further has the good ventilation property and comparatively high surface strength and brushing property. The defects that in an existing casting coating preparative technique, refractory powder is expensive, and the production cost of the coating is comparatively high are overcome. The coating manufactured through the method has super quality and competitive price and is simple in production technique.

Description

technical field [0001] The invention relates to the field of casting coatings, in particular to an alcohol-based casting coating for lost foam casting and a preparation method thereof. Background technique [0002] Foundry coatings refer to casting auxiliary materials that are used to coat the surface of the cavity or sand core to change their surface refractoriness, chemical stability, metal erosion resistance, sand sticking resistance, etc. It is composed of various properties. It is a dispersion system composed of high-quality materials, and its composition mainly includes refractory materials, suspending agents, carriers, binders and special additives. When acting on castings, it is required that the coating has good process performance, work performance, quality stability and application reproducibility. Prevent defects such as cracking, trachoma, and white iron formation caused by excessive local cooling of casting products. There are many kinds of casting coatings, ...

AI Technical Summary

Problems solved by technology

[0003] However, alcohol-based casting coatings in the prior art have many defects, such as poor suspension stability, easy delamination during long-distance transportation and storage, poor high temperature resistance, low hardness, poor chemical stability, and low metal erosion resistance. , weak sand resistance, etc., make alcohol-based casting coatings have a single function and cannot meet large-scale industrial production