Carbon steel anti-corrosion process

Abstract

The invention relates to a carbon steel anti-corrosion process, characterized by comprising the following steps: (1) carrying out sandblasting and rust removing on the surface of a carbon steel base layer; (2) after the rust removing, coating the surface of the carbon steel base layer with primer; (3) coating the surface of the primer with vinyl ester resin as a leveling layer; (4) arranging a layer of chopped strand mat on the leveling layer, then coating with vinyl ester resin, removing air bubbles, compacting to enable the vinyl ester resin to fully impregnate the chopped strand mat, and repeating for several times to obtain a semi-finished product; (5) arranging a layer of surface mat on the semi-finished product obtained in step (4), then coating vinyl ester resin, and enabling the vinyl ester resin to sufficiently impregnate the surface mat ; (6) then coating with vinyl ester resin mixed with liquid wax as a cover layer, wherein the weight ratio of the vinyl ester resin to the liquid wax is 100 to 4. According to the invention, SWANCOR984-M primer is applied on the surface of the carbon steel base layer, thus the high combination of the carbon steel and the vinyl ester resin is ensured, the delamination phenomenon between different materials is avoided, and the anti-corrosion ability is strong.

Description

technical field [0001] The invention relates to an anticorrosion process, in particular to a carbon steel anticorrosion process. Background technique [0002] Carbon steel is also called carbon steel. Because of its good plasticity and weldability, it is used in welded containers. However, in the fields of hydrometallurgy and chemical industry, there is a problem of corrosion of acidic media in containers. The steel is lined with an anti-corrosion layer, but the overall performance is not good, and the anti-corrosion layer is easy to fall off, making it more difficult to repair the corroded container. At present, carbon steel is lined with glass fiber reinforced plastics, glass fiber reinforced plastics, also known as glass fiber reinforced plastics, which is a composite material made of resin as a matrix and glass fibers as reinforcements through a composite process. It belongs to two different materials, and there is a problem with the combination. FRP is easy to fall off...

AI Technical Summary

Problems solved by technology

[0002] Carbon steel is also called carbon steel. Because of its good plasticity and weldability, it is used in welded containers. However, in the fields of hydrometallurgy and chemical industry, there is a problem of corrosion of acidic media in containers. The steel is lined with an anti-corrosion layer, but the overall performance is not good, and the anti-corrosion layer is easy to fall off, making it more difficult to repair the corroded container

At present, carbon steel is lined with glass fiber reinforced plastics, glass fiber reinforced plastics, also known as glass fiber reinforced plastics, which is a composite material made of resin as a matrix and glass fibers as reinforcements through a composite process. Belonging to two different materials, there is a problem with the combination. FRP is easy to fall off from the carbon steel substrate, and delamination occurs, and the service life is short in a strong corrosive environment.