The internal and external anti-corrosion treatment of rebar is a very important link, which can effectively prevent the rebar from being corroded during use, thereby extending its service life.

First of all, let's talk about the internal corrosion protection of rebar. Internal anticorrosion is mainly achieved by adding preservatives. Preservatives are substances that can prevent or slow down metal corrosion. They can form a protective film to isolate the metal from contact with corrosive media in the environment, thereby preventing metal corrosion. In the production process of rebar, preservatives are usually added during hot or cold rolling so that they are evenly distributed inside the steel. In addition, a layer of anti-corrosion layer can be formed on the surface of rebar by electroplating, spraying and other methods to further enhance its corrosion resistance.

Next, let's talk about the external corrosion protection of rebar. External anticorrosion is mainly achieved by coating anticorrosive paint. Anticorrosive paint is a material that forms a tough protective film to prevent moisture, oxygen and other corrosive substances from invading metal surfaces. In the production process of rebar, anti-corrosion coatings are usually applied immediately after hot or cold rolling to ensure good adhesion between the coating and the steel surface. In addition, a layer of anti-corrosion layer can be formed on the surface of rebar by hot dip galvanizing, electric galvanizing and other methods to further enhance its corrosion resistance.

In general, the internal and external anti-corrosion treatment of rebar is a systematic project, which needs to take into account the use of rebar environment, use conditions and anti-corrosion effect and other factors. Only in this way can the stability and durability of the rebar be ensured during use.