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Metals and alloys surround us everywhere - from the usual instruments and household appliances to sophisticated medical equipment, military developments.

Each product has a different shape and composition, but one common enemy is corrosion. It changes the structure of the metal, and then the geometry of the part. The latter as a result becomes fragile and unsafe to use.

Various types of processing are used to protect products. However, at the very beginning, the type of corrosion should be determined.

Types of corrosion

Specialists distinguish many of its species, distinguished by the type of interaction or flow rate. We will focus on the most understandable and common:

  1. Soil corrosion. It affects metal products located in the ground. Soil contains a huge amount of mineral compounds, which together with groundwater destroy the metal structure.

  2. Atmospheric corrosion. It destroys the metal by oxidation - contact of water vapor of air with the surface of the part. An interesting fact: there is a direct correlation between the degree of air pollution and the metal oxidation rate - the stronger the pollution, the faster corrosion develops.

  3. Fluid corrosion. The most common and understandable type. It affects metal products that are affected by moisture. You can meet her on old cars with "saffron milk" or on unprotected metal structures in the city. Well, if you live in the south of our country, you probably know that sea water is much more harmful to metal than fresh, due to its mineral composition.

How corrosion strikes metal

The degree of damage can be divided into 3 stages:

  1. Corrosion of the surface is the top layer of rust, without deep penetration. It is formed only on the surface of the product, is the safest and most easily removable, if you turn to specialists in time.

  2. Corrosion of the local area is the area of the product affected by deep rust. It requires the removal of this area, as it can cause deep damage and oxides of alloy components.

  3. Deep corrosion of the entire part - rust, which hit the products over the entire area and depth. Not subject to recovery.

Methods of protecting metal from corrosion

Currently, there are many technologies and ways to combat corrosion, but they all boil down to using the following methods:

  • increasing the chemical properties of metal products;

  • full isolation of the part from external influences;

  • the use of inhibitors to reduce the aggressiveness of the environment;

  • exposure to rust.

Each method is effective in its own way, but their application is far from possible in every situation.

A modern and effective solution is powder coating of metals. The protective layer is formed by applying polymer, followed by high-temperature processing in a special furnace chamber.

The result of metal painting is a coating with high protective and decorative properties.

How is anti-corrosion treatment

Protection of metal products is a high-tech process that requires strict adherence to each of the stages:

  1. Sandblasting or shot blasting. A special pump delivers sand or shot under high pressure to the product. Abrasive treatment removes the rust layer to a pure metal, and also improves the adhesion (adhesion) of the polymer layer.

  2. Product repair. After sandblasting works on metal, all hidden foci of deep corrosion are detected. At this stage, often there is a need for local repair of damaged areas using argon-arc welding.

  3. Degreasing and phosphating surface. Removal of oxides, powder coating. The latter contains zinc and provides corrosion resistance in the most aggressive environments. Next, the product is dried in a curing oven.

  4. Powder coating in a special chamber. The polymer is poured into the atomizer, dissolving the powder to a liquid state, and then applied to the part under pressure. To obtain an ideal coating, the spray gun receives an electrostatic charge, which allows the paint to “stick” to the neutral-charged product.

  5. Heat treatment in a special oven for 15-30 minutes. At 150–220 ° С, polymerization of the coating occurs - the paint melts, creating a continuous protective film. The product is ready for use after complete cooling.

How does the anti-corrosion treatment in NAYADA

NAYADA offers a wide range of services for the protection of metal products from corrosion and powder coating of any complexity - from classic colors to decorative coatings (wood or stone painting).

We are open to cooperation and ready to provide quality services both when working with large metal structures, and with small auto, motorcycle or bicycle parts.

Our production uses Swiss equipment from ITW GEMA and foreign powder paints from well-known manufacturers.

To order anti-corrosion treatment, contact us by phone or leave a request on the official website

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