High-temperature lubricating anti-penetration nano environmental protection coating and preparation and use methods thereof

Abstract

The invention discloses a high-temperature lubricating anti-penetration environmental protection coating, which is prepared from the following components in percentage by weight: 25 to 40 percent of boron nitride, 0.5 to 10 percent of nano alumina, 10 to 15 percent of silica sol, 1 to 5 percent of liquid sodium silicate, 10 to 15 percent of aluminum sol, 1 to 5 percent of nano silica, 0.5 to 2.5 percent of bentonite, 0.5 to 1.0 percent of soft clay and 35 to 50 percent of pure water. The coating disclosed by the invention has high temperature resistance and can be widely applied to surfaces ofrefractory materials such as a launder, a distribution plate, a distribution flow tank, a filter box, an adapter plate, a skimmer and a casting table lining, which are in contact with aluminum alloyliquid, thereby protecting the refractory material from scouring, erosion and penetration of the aluminum alloy liquid, and more importantly, protecting the aluminum alloy liquid from pollution of thealuminum alloy liquid; meanwhile, the materials selected by the invention are all inorganic materials, so that the coating is an environmental protection coating. The invention further discloses a preparation method and a use method of the coating.

Description

technical field [0001] The invention relates to a high-temperature lubricating anti-penetration environmental protection coating and a preparation and application method thereof, belonging to the field of inorganic non-metallic materials. Background technique [0002] With the large-scale, high-speed, and large-scale equipment of aviation, aerospace, automobiles, and ships, higher requirements are put forward for the performance indicators of aluminum alloy structural materials such as high-strength deformation, high-tough deformation, high-strength heat resistance, and high-strength plasticity. The amount is also increasing, so a new concept is proposed for the refractory material used in the aluminum alloy melt channel, so that the refractory material neither sticks to the aluminum melt nor chemically reacts with the refractory material, so a kind of It is a high-temperature-resistant coating that can be evenly painted on the surface of the refractory material and adhered ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies in the existing high-temperature resistance, the purpose of the present invention is to provide a high-temperature lubricating anti-penetration environmental protection coating and its preparation and use method, which can effectively protect the refractory material from being damaged, and do not mix any impurities in the aluminum alloy solution. The paint is harmless to the human body and has no pollution to the environment

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