Environment-friendly cast iron stove paint and preparation method thereof

Abstract

The invention discloses an environment-friendly cast iron stove paint. The environment-friendly cast iron stove paint is composed of raw materials including, by weight part, 30-40 parts of acrylic acid, 1-5 parts of sorbitan monooleate, 2-8 parts of lanthanum oxide, 2-8 parts of barium oxide, 10-15 parts of quartz powder, 3-6 parts of green tea powder, 3-6 parts of modified starch, 3-6 parts of carboxymethyl cellulose, 20-30 parts of ethyl alcohol and 40-60 parts of water. The environment-friendly cast iron stove paint is environmentally friendly in raw materials, high in refractoriness and good in sand adhesion resistance and stripping effects, achieves a casing removal rate of 94% before castings are shot-cast, reduces cleaning costs and working hours and further greatly reduces the labor intensity of aftertreatment workers.

Description

technical field [0001] The invention relates to an environment-friendly coating for cast iron stoves and a preparation method thereof, belonging to the technical field of cast iron product processing. Background technique [0002] The coating used for sand casting is mainly to shield the interaction between the sand mold and the metal liquid, and form a dense refractory coating at the casting temperature to prevent the metal liquid from penetrating into the sand mold. Prevent heavy metal liquid from entering and affecting the surface finish of castings. [0003] At present, resin coating is commonly used, because it is a suspending liquid and has low suspending property. It can be painted evenly by stirring continuously during use, otherwise a dense coating cannot be formed. At the same time, high refractory powder is often used to improve the cavity or The refractory performance of the grinding wheel; the coating of conventional casting coatings is easy to form a low-melti...

AI Technical Summary

Problems solved by technology

[0003] At present, resin coating is commonly used, because it is a suspending liquid and has low suspending property. It can be painted evenly by stirring continuously during use, otherwise a dense coating cannot be formed. At the same time, high refractory powder is often used to improve the cavity or The refractory performance of the grinding wheel; the coating of conventional casting coatings is easy to form a low-melting point phase during pouring, and the coating still exists in the original powder state during the entire pouring process, so that molten iron penetrates into the shallow surface of the coating, resulting in powder sticking of castings

The sticky powder is extremely difficult to clean and can only be removed by grinding, which will bring a very large workload to the later cleaning, and the inner cavity of the casting cannot be cleaned, which will lead to the scrapping of the casting. At the same time, most of the coating materials Not environmentally friendly, long-term use will affect the health of the operator