Most of the air flotation machines are now made of steel materials. The equipment runs all year round, and it is inevitable that rust or even corrosion of some of the tanks will occur. Generally, the air flotation box is coated with zinc-rich primer, mica iron oxide intermediate paint, and epoxy topcoat, and the total thickness of the paint film is not less than 200μm. The materials of the air flotation machine are mainly carbon steel and stainless steel, most of which are made of carbon steel, but carbon steel will inevitably show rust and corrosion after a few years of use. scrapped. It will also seriously affect work efficiency. So what are the anti-rust treatments for air flotation machines?

1. Derusting of carbon steel surface of air flotation machine: shot blasting, sand blasting; rust removal of air flotation machine, etc. Sa2.5.

2. Coating of underwater parts of air flotation machine: one layer of epoxy zinc-rich primer, one layer of epoxy micaceous iron primer, the third layer of epoxy asphalt primer, and the fourth layer of epoxy asphalt topcoat.

3. Coating of the water parts of the air flotation machine: one layer of epoxy zinc-rich primer, one layer of epoxy micaceous iron primer, and the third layer of chlorinated rubber topcoat.

After the stainless steel parts of the air flotation machine are processed, they are surface passivated. If the coating is damaged during transportation and installation, it should be repaired in strict accordance with the coating process, and its quality level. The anti-corrosion of the air flotation machine is to extend its service life by taking various means to protect the metal objects that are easy to corrode. Usually, physical anti-corrosion, chemical anti-corrosion, electrochemical anti-corrosion and other methods are used for the anti-corrosion work of the air flotation machine. , but the anti-corrosion work of the air flotation machine must be operated correctly according to the actual situation.

Anti-rust air flotation machine

Expansion: Generally speaking, the equipment of sewage treatment steel structure can be painted with the following matching paints to prevent rust and oxidation and improve the life of the machine.

1. Primer + intermediate paint + topcoat: ordinary epoxy zinc-rich primer / epoxy zinc phosphate primer / epoxy iron red primer + epoxy micaceous iron intermediate paint + various colors of acrylic polyurethane topcoat (the anti-corrosion period can reach 6-8 years)

2. Primer + topcoat: Hongdan anti-rust paint + various alkyd enamels (the anti-corrosion life can reach 2-3 years)

3. Primer + intermediate paint + topcoat: ordinary epoxy zinc-rich primer + thick-film epoxy micaceous iron intermediate paint + various colors of chlorinated rubber topcoat (the anti-corrosion life can reach 5-8 years, depending on the situation The difference is that this kind of matching can increase the film thickness)

4. Primer + intermediate paint + topcoat: ordinary epoxy zinc-rich primer + epoxy intermediate paint + various chlorinated rubber topcoats (the anti-corrosion life can reach 5-8 years)

5. Primer + intermediate paint + topcoat: ordinary epoxy zinc-rich primer + epoxy intermediate paint + various colors of aliphatic polyurethane topcoat (anti-corrosion life can reach 6-8 years)

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