Composite metal high-temperature-resistant anti-oxidation coating and preparation method thereof

Abstract

The invention discloses a composite material metal high-temperature-resistant anti-oxidation coating and a preparation method thereof, the composite material metal high-temperature-resistant anti-oxidation coating is prepared from the following raw materials: a binder, a carrier liquid and a base material, the binder is modified silica sol, the carrier liquid is water, the base material comprises Al2O3, SiO < 2 >, ZrO < 2 >, TiO < 2 >, CaO and B2O3, the binder accounts for 10%-35% of the overall mass of the coating, the Al2O3 accounts for 10%-15%, the SiO < 2 > accounts for 5%-10%, and the B2O3 accounts for 5%-10%. The catalyst comprises the following components in percentage by weight: 5%-10% of ZrO < 2 >, 2%-3% of TiO < 2 >, 2%-3% of CaO, 3%-5% of B2O3 and the balance of carrier liquid, according to the composite material metal high-temperature-resistant anti-oxidation coating and the preparation method thereof, a layer of coating protective film can be formed on the surface of a steel billet at a high temperature, an oxidation reaction between air and the surface of steel is blocked, the steel yield can be increased by 2-4%, and the loss of the steel is reduced.

Description

technical field [0001] The invention relates to the technical field of iron and steel processing, in particular to a composite material metal high-temperature-resistant anti-oxidation coating and a preparation method thereof. Background technique [0002] Hot rolling of steel can improve its processing performance, that is, the coarse grains in the casting state are broken, the cracks are significantly healed, the casting defects are reduced or eliminated, the as-cast structure is transformed into a deformed structure, and the processing performance of the alloy is improved. When the steel is hot rolled, because the billet is in a high temperature environment, the billet and the air undergo an oxidation reaction, forming a layer of iron oxide on the surface of the billet, and this part of the steel will be lost. The annual loss of steel due to oxidation is about 2-4%. If the world’s annual steel output is 700 million tons, the annual loss of steel in hot rolling oxidation wi...

AI Technical Summary

Problems solved by technology

The annual loss of steel due to oxidation is about 2-4%. If the world’s annual steel output is 700 million tons, the annual loss of steel in hot rolling oxidation will be several million tons or even tens of millions of tons, which is not conducive to saving resources. , but also bring unnecessary losses to the enterprise