foreword

In some corrosive environments, in order to ensure the reliability and service life of radar level gauges, some anti-corrosion measures are usually taken, one of which is to spray anti-corrosion coatings on the instruments. This article takes you to a detailed understanding of anti-corrosion coating related knowledge!

What is a coating?

A coating layer formed on the surface of a metal or non-metal substrate using physical, chemical, or other methods, with a certain thickness (generally greater than 10um), different from the substrate material, and with certain strengthening, anti-corrosion, or special functions.

What kind of anti-corrosion coating has the best effect?

01

A corrosion-resistant coating with good adhesion. Whether the anti-corrosion coating can firmly adhere to the metal substrate is one of the key factors for its anti-corrosion effect. The stronger the adhesion of the anti-corrosion coating, the better its corrosion resistance and the more durable the coating.

02

Anti corrosion coating with strong aging resistance and stability. If the anti-corrosion coating has poor aging resistance and poor stability, it will directly affect the anti-corrosion effect. Therefore, the anti-corrosion coating should have good anti-aging performance and be able to maintain stable properties in low temperature, high temperature, water and chemical reagents.

03

The anti-corrosion coating should have a certain mechanical strength and considerable adaptability to external stress. The conventional mechanical properties of anti-corrosion coatings include hardness, flexibility, impact resistance, wear resistance, and other characteristics. Anti corrosion coatings with considerable adaptability to external stress and certain mechanical strength have better effects.

Anti corrosion Coating&Anti corrosion Knowledge Q&A

question

Do anti-corrosion coatings need to be added?

answer

It is necessary to decide whether to add anti-corrosion coating and the thickness of the coating based on the on-site working conditions. Firstly, it is necessary to confirm whether the medium measured by the radar level gauge is strong acid, strong alkali medium, or other corrosive organic solvents. Based on the characteristics of different media, it is determined whether to add anti-corrosion coatings and their thickness.

In addition to the characteristics of the medium itself, the pressure and temperature of the tank also have a significant impact on its corrosiveness. Generally, as the temperature increases, the rate of corrosion also accelerates. As the pressure increases, the corrosiveness also increases. So, it is important to have a clear understanding of temperature and pressure.

question

Are there any other anti-corrosion methods besides adding anti-corrosion coatings?

answer

Yes, in addition to adding anti-corrosion coatings, corrosion-resistant materials such as polytetrafluoroethylene can also be chosen to manufacture instrument components. It is also possible to isolate the corrosion of the measured medium on the radar level gauge by blowing air or other inert gases.