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Measures To Prevent The Corrosion Of Heat Exchanger

Four common measures to prevent corrosion of metal material of heat exchanger
Corrosion resistant material

With corrosion resistant materials, such as eyes, hartz alloy stainless steel, titanium, titanium alloy, copper, aluminum, etc.), the material corrosion resistance is strong, can improve the service life of heat exchanger, but the high corrosion resistance of the material is expensive, the manufacturing cost will increase accordingly.

Electrical and chemical protection laws

Electrochemical protection method not only can prevent heat exchanger material stress corrosion cracking, and under the condition of proper protection parameters even if still can make its stop extension of crack.

Add a corrosion inhibitor

In a corrosive medium, add a small amount of certain substances, these substances can make use of metal material corrosion of the heat exchanger is greatly reduced, or even stop, this type of material known as corrosion inhibitor. The addition of corrosion inhibitors should not affect the production process and product quality.
Stress corrosion can be controlled by removing dissolved oxygen and oxidants in the medium. It is also an effective measure to control the stress corrosion of the metal material of the heat exchanger.


Anti-corrosive coating

Used in heat exchanger of the surface of the metal material, through some coating methods, coating corrosion resistance of the coating layer, to avoid direct contact with the corrosive medium metal surface.
This technique is the most cost-effective, initially used to prevent the corrosion of the gas, and the coating is mostly organic polymer solution. Now people gradually develop in the direction of anti-oil and solvent coatings, high temperature coatings, heavy anti-corrosion coatings and special environmental coatings.
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