Paint for metal and rust rating. Metal paint: types and applications

Everyone knows what “rust” is, even children. In appearance it cannot be confused with anything else. But, unfortunately, the loss of an attractive appearance by metal structures is far from the biggest nuisance associated with the appearance of unsightly flaky red spots. What’s much worse is that rusting is a corrosive process that destroys the structure of the metal.

If you leave everything to chance and don’t fight rust, then hardware and structures collapse quite quickly, losing their bearing capacity. Of course, it is best to prevent metal corrosion by promptly protecting it from moisture and exposure to other substances that can lead to the rapid appearance of rust. But what if it has already appeared? Is it possible to stop the corrosion process by initial stage? And, if possible, then how?

The simplest and in an accessible way In this situation, the solution is to isolate the metal surface from factors that cause corrosion - applying a protective coating to it.

That's why everyone metal parts usually painted.

But are all paints equally effective at protecting a surface that has already been corroded to one degree or another? No, not all. Moreover, if the structure is located in the open air, that is, it is constantly exposed to negative influences.

Types of paint and varnish compositions to protect metal from corrosion

We will consider only those compositions that are intended not just for painting metal, but specifically for protecting it from corrosion, including that which has already begun.

Compositions for this purpose can be divided into three groups:

• anti-corrosion;
• rust paints;
• hammer

Anti-corrosion compounds are designed to protect the metal from the destructive effects of oxygen and moisture, which are the cause of rust.

There are several types of such paints:

• Insulating – form a high-strength film and can effectively protect the metal from atmospheric influences. Most often, the basis of such mixtures is lead or iron lead. The drying time of the paint depends on its composition and may vary among different manufacturers.
• Passivating - used where traces of corrosion are already visible. Due to special components, such paint can slow down the oxidation of the metal and even stop it completely. These compounds are well suited for protecting structures exposed to constant moisture.
• Phosphating - contain orthophosphoric acid and passivating additives. After painting, a wear-resistant layer is formed on the metal surface, protecting it from further rusting.

It should be noted that all anti-corrosion paints are used only for surfaces with minimal traces of corrosion.

Paints for rust Usually, the wrong areas of the structure are applied that already have obvious signs oxidation. The use of such paints allows you to avoid the lengthy and costly process of preparing a rusty surface for painting.

These compositions are also divided into several types:

• Paint-primer-converter. Used to protect surfaces affected by corrosion. They contain orthophosphoric acid, which, when reacting with iron oxide, forms a layer that is not subject to further destruction. If the damage to the metal was minimal before, then this painting allows you to almost completely restore it.
• Inhibiting compounds act simultaneously as a primer and enamel. The paint reacts with rust, forming on the surface durable coating. She has good adhesion, but requires thorough impregnation of the base to be painted, which leads to significant consumption of the mixture.
• Stabilizing compounds are designed to prevent further destruction of areas of the structure damaged by corrosion.

Hammer paints contain aluminum powder and glass (fine fraction). They also contain silicone oil. The paints have excellent adhesion and are well suited for painting metal that requires anti-corrosion protection, and with traces of rust.

These compositions are remarkable in that they give the surface a high decorative quality. Hammer paints have a wide range of colors, dry quickly, but require strict application technology.

Paint selection

In order to make the right choice coloring composition which you are going to use for protection metal structures located outdoors, certain factors must be taken into account.

The following factors are taken into account:

• Type of surface to be painted. The metal from which the structure is made may have different composition and or be protected, for example, by galvanizing, which can only be treated with certain paints. Always carefully read the instructions for the chosen paint - for which metals it can be used.
• Frost resistance - the composition for outdoor use must be frost-resistant. Otherwise protective film It will turn out to be short-lived and will not be able to perform its functions.
• Paint Consumption – Always keep in mind that painting a rusty surface will require more paint than usual.
• Manufacturer – always give preference to reliable manufacturers. Their products usually cost a little more, but they usually always justify their price.
• Price - different kinds paints have different prices. The most inexpensive are metal paints that have a simple composition and minimal anti-corrosion effect. They are the most affordable. Next in the price line are paints that prevent or stop corrosion. The most expensive paints are those that can be applied directly to the rust, with virtually no surface preparation.

If the surface has minimal traces of corrosion, then you can use inexpensive compounds. If the degree of damage is 35-40%, then you need to purchase more effective (and therefore more expensive) paints.

If it is not possible to buy a highly effective, expensive composition, then you can go the other way: purchase inexpensive anti-corrosion paint, but apply it only after treating the metal surface with a rust converter and a modifier primer.

Very important: the paint container must indicate that it is “weather resistant.”

Surface preparation and painting

Depending on the type of paint chosen, surface preparation for painting may vary, so we will consider different options.

If you decide to use anti-corrosion paint, proceed as follows:

• Removal from surface old paint. If this is not done, the new coat of paint will not provide adequate protection.
• After cleaning the metal from paint, it is necessary to assess the degree of rust damage to the surface of the structure. If there are traces of corrosion, they must be removed to the intact base using abrasives, since ordinary paint cannot transform rust.
• Next, the metal is degreased.
• It is also advisable to treat the surface with an appropriate primer (read the instructions included with the paint; it often indicates which primers can be used for pre-treatment grounds).

If you purchased a composition for painting surfaces against rust:

• First you need to remove dust and dirt from the surface of the metal structure.
• Next, you need to determine the degree of corrosion damage to the metal.
• Although the composition can be applied directly to rust, best result allows for preliminary cleaning of swollen and peeling areas of metal.
• For cleaning, you can use abrasive tools, sandblasting the surface, a special rust remover, or even pressure washing.
• Next, the base needs to be dried and degreased (if necessary).

You can paint metal different ways– brush, roller, spray gun. The main thing here is the requirement to distribute the paint over the surface as evenly as possible.

Painting is carried out according to the instructions given on the paint can. Usually it is done in 2-4 layers with intermediate drying of each of them.

Such paint compositions dry quite quickly - from half an hour to several hours.

Among the many compositions for metal protection, there are the most popular ones, tested by specialists and ordinary consumers.

These include the following:

• “Nerzhamet” is a composition with excellent adhesion and hiding power, dries quickly. Made on the basis of alkyd resins, organic solvents and polymer additives. The paint has a convenient application technology and a service life of up to 6 years. Forms a semi-gloss film on the metal surface. Simultaneously performs three functions (“3 in 1”): anti-corrosion primer, rust converter, durable enamel.
• Hammerite - presented in two series: smooth coatings and hammer compounds. Can be used for painting black, non-ferrous and galvanized metal structures. This is also a 3 in 1 product. The paint forms an even coating, which contains additives that neutralize the effects of rust on the metal.
• “Tsikrol” (enamel) – used for painting galvanized products. Has high adhesion and good tolerance low temperatures, resists moisture and corrosion.
• “Alpina” – “3 in 1” paint – does not require the use of a primer or anti-corrosion materials. The composition is based on alkyd resins and active pigments. The paint dries quickly, forming a strong and durable film.
• “Rzhavoed” is a universal composition (enamel + primer), stops corrosion and protects metal from rust.

All these rust paints have the following advantages:

• the ability to apply directly to a rusty surface without first cleaning it;
• adheres well to the base;
• form a uniform coating impermeable to water and dirt;
• stop corrosion;
• dry quickly;
• Quite durable - service life is 6-8 years.

Thus, there are a sufficient number of paint compositions on the market that can protect metal products and structures from corrosion, as well as stop it.

The cost of paints marked “for rust” is higher than conventional anti-corrosion compounds, but their use allows you to reduce the time required for work and also reliably protect metal parts from destruction.

Often, metal surfaces coated with paint lose their original appearance. The combination of air with metal, even with the slightest scratch or crack, inevitably leads to the appearance of rust. The owner of the damaged item needs to know exactly what type of paint or rust primer is required in a particular case.

Benefits of Hammerite paint

Currently, there are a huge number of different means for painting and restoring surfaces damaged by corrosion. The choice of means depends on the degree of damage and the individual preferences of the buyer. The most popular on the market is the special Hammerite paint with a hammer effect. Experts highlight many advantages when using this product:

• thanks to this paint unique composition can be applied to a damaged surface without removing the rust first;
• This product has a water-repellent effect, which prevents the reappearance of rust;
• This painting product can be used for different temperatures, ranging from -20 to +85°C;
• when exposed to high temperatures the paint does not lose its properties;
• the hand-chased effect makes Hammerite paint one of the most convenient and popular means against metal corrosion;
• This product is suitable not only for metal substrates, but also for processing wooden products, covered with soil.

Today, Hammerite is used for painting non-ferrous metals, used during indoor work and is the most convenient means for combating corrosion.

Advantages of Tikkurila paint

Painting products from the Finnish company Tikkurila also have a number of advantages and can help with corrosion on metal and ground surfaces. Among the advantages of using this paint are:

• the use of harmless environmental products that meet European quality standards in the product;
• suitable for both professional work and household repair needs;
• long lasting effect after painting;
• large selection of colors.

This type of paint is safe for use, will qualitatively and reliably protect the affected area from reappearance rust on the surface.

The Russian paint “Nerzhamet” from the KrasKo company, which produces coloring agents for metals and soils susceptible to corrosion, is a worthy competitor to foreign anti-corrosion agents.

Benefits of using this type of coloring agent:

• using new technological equipment when creating a coloring matter;
• European quality standards are met;
• the paint provides reliable and long-lasting protection against the reappearance of rust;
• this product is indispensable for painting external metal structures with complex profiles, including large metal products;
• The paint will withstand the aggressive effects of the atmosphere and will prevent moisture and sunlight from penetrating the coating.

This product can be used both for external construction work oh, and when painting the inside of a building. It will reliably protect metal bases from rust and will increase the service life of metal and ground surfaces.

Advantages of hammer paints for primer and metal

Currently, paints for rust and primer with a hammer effect are in great demand. These products greatly simplify the process of treating the affected area and help reliably protect it from re-coating with rust. Thanks to the hammer effect, surface treatment does not require the use of special cleaning machines, since the paint automatically destroys the resulting corrosive coating.
The composition of these paints is exceptionally durable and contains fillers in the form of fine glass and aluminum powder, as well as silicone oil. IN liquid state the finished dye has increased adhesion. It dries quickly, after which a durable anti-corrosion surface is formed.
The big advantage is not only the quality itself, but also appearance paints. The surface treated with an anti-corrosion compound is externally indistinguishable from hand-chasing metal made using a forge hammer. A wide variety of colors allows you to apply paint without compromising general view premises, and the environmentally correctly selected composition will not cause harm to health. Usage quality paints will allow you to extend the time of use of metal and soil products for a long time.

IN Lately appear latest materials with a synthetic base, but metal is still used everywhere. It is used to create various designs such as window grilles, gates, small architectural forms and greenhouses. But due to the characteristics of the material, special enamels are required to treat its surface. One of the best finishing compounds is metal paint.

If you need paint for metal, decide on the right type. This is necessary in order to most correctly select the coloring composition for the type of surface. Highlight the following types metal paints:

• Oily. The main components for them are drying oil and natural oils . They have low resistance to temperature changes. They are often used for interior works . Concerning external works , for them they are practically not used. Oil paint

• does not protect structures with a metal surface from the corrosion process. Alkyd. They are better than others for painting galvanized elements. But despite the excellent adhesion ability, these paints are not resistant to

• elevated temperatures . In addition, they are extremely flammable. They can be used to paint both internal elements and metal elements of the facade, as they protect the metal well from corrosion. They are effective when painting heated parts. Acrylic.

• It's better to choose acrylic paint on metal for outdoor work, as it retains its protective functions for 8 years. The surface of acrylic will not turn yellow or lose its gloss when exposed to direct sunlight, and is also not susceptible to oxidation. Epoxy enamels.

They are rarely used in domestic conditions, as they are very toxic. They are made on the basis of silicone resins, providing

good protection metal structures from exposure to elevated temperatures. They differ in similar characteristics in terms of drying time, shade and composition, as well as technology of use.

Metal paint for exterior use requires preliminary preparation. The treated area is cleaned of rust, dirt and dust. If necessary, it is degreased. Often special products designed for rusty metal are used. This can be an enamel primer that will prime and clean the metal surface. To obtain a rich shade, the composition is applied in two layers.

Rust paint has the following positive aspects:

• the ability to apply directly onto rust;
• the ability to create a weather-resistant coating;
• increased covering ability;
• increased quality of adhesion, even if there is a rusty layer;
• good corrosion resistance;
• quick drying;
• long service life up to 8 years;
• many different shades.

Paint for metal and rust is prohibited for processing equipment if during operation the surface temperature heats up above 150 degrees. Do not apply such compositions to surfaces in contact with drinking water, as it may be hazardous to health.

In the video: Hammerite metal paint.

Similar compositions are applied to various surfaces made of metal. They are actively used against rust for outdoor work. There is no need to use primers before applying enamel to the surface. This is due to the fact that primer with enamel is a combination of the advantages of a primer mixture, anti-corrosion paint and enamel for metal surfaces. As a result, the sequence of work with primer-enamel is greatly simplified, and all you have to do is follow simple recommendations.

First of all, the metal surface must be cleaned of traces of grease, dirt and dust. Also filmed upper layer on rust. For this you can use sandpaper or a metal spatula (brush). Then you need to wipe the surface using a solvent.

The primer-enamel is mixed well and applied over the iron in two layers. When the first layer is applied, you must wait at least 30 minutes. This is the minimum period required for interlayer drying. The maximum period before applying a second coat can be extended to 5 hours. If you exceed this time, you will have to postpone work for up to 30 days.

When using metal enamel, strictly follow the instructions on the package. It is important to carry out work on the most free day in order to apply in a timely manner. required quantity layers to the surface.

Anti-corrosion paint compositions

Metal paints are capable of providing high-quality surface protection from corrosion and premature loss of original properties. Experienced specialists use good paint for exterior metal work High Quality. The costs are recouped quickly, since you do not have to renew the coverage annually.

Anti-corrosion paints are represented by quick-drying one-component compositions that include anti-corrosion pigments and synthetic resins. They provide effective fight with corrosion and a finishing coating with high decorative characteristics.

White paint is ideal for pipes and other metal surfaces. But you can choose any other shade.

Using paints designed for metal, you can achieve a semi-gloss, gloss or hammer finish. At the same time, the composition resists the accumulation of dirt, which contributes to the formation of rust on the painted surface. Such compositions can be used not only in suburban construction, but also in industrial production.

Enamels are used for painting plumbing and gas pipes, machine tools and roofs, as well as in the process of creating agricultural tools. They can be used to protect any surfaces that need protection from rust formation processes.

Exterior paint contains high molecular weight silicones, which gives the composition additional properties. They hinder negative impact moisture on metal parts.

What paint is suitable in the best possible way, it’s up to you to decide, taking into account the operating features in your home. Thanks to its wetting properties, it can be used on unprepared surfaces without prior priming. The composition is applied to the surface in the temperature range from -20 to +80 degrees. This allows the use of paint containing oils in humid and hot climate zones.

When choosing a coloring composition, you must follow the recommendations of experts. Not always exterior paint suitable for interior use. At the same time, the features of applying the mixture to the surface also differ.

It is important to consider the following:

• If necessary to paint heating pipes and radiators, choose a heat-resistant composition with the ability to operate at temperatures of about 150 degrees.
• Black and gray paint well suited for domestic premises, while residential spaces require brighter solutions.
• The surface of the heating elements is painted before the onset of heating season when they are cold.
• Furnace elements are painted with compounds that can withstand temperatures up to 500 degrees.
• Non-ferrous metals are coated with special primers, because ordinary ones are not suitable for this.
• If you plan to work outdoors, use organic solvents.

Therefore, when choosing a paint for metal finishing, it is important to consider many factors, including temperature, use, corrosion and rust protection, and post-treatment color. Only in this case will you be completely satisfied with the result of the work.

Among the compositions that prevent the development of corrosion, there are priming, painting, and enamel primers. They all have the same property, but they have different time drying, color, shade, composition and rules of use.

Before applying any of the above products, the metal surface must be cleaned of rust, dust and dirt, and degreased. The easiest way to do this is with special means, corroding the neigh. The most popular and effective is the Rzhavoed-Universal enamel primer. This composition will simultaneously clean and prime the metal. Among this series there are compositions that color the surface. Therefore, wanting to receive saturated color, it is enough to apply the second layer of “Rusteater”.

Which rust paint is best?

A lot of positive feedback from garage owners, metal fences, boats about Hammerite rust paint. It belongs to the category of quick-drying (2 hours is enough), but for high-quality coating At least two layers are required. This composition is recommended for use only in warm, not damp weather.

If you don’t have the time or desire to pre-clean the metal, you can use Nerzhamet paint. It is made on the basis of alkyd resins, dries quickly and corrodes rust. But it should be taken into account that when applying this paint to an uncleaned surface, the coating layer will be raised in places. The paint will lie more evenly on prepared and primed metal, which will provide the product with an attractive appearance.

If you need the most a budget option paints for rust, you can buy “Iron Lead”. This product has excellent covering ability. It can be used if you need to quickly bring a garage, fence or anything else into proper shape. “Iron lead” adheres well and, thanks to the thick layer of coating, effectively masks any flaws. But you need to know that in the fight against corrosion it is less effective than the above remedies. However, for a long period of time it will retain the appearance that was obtained after staining.

One of the most expensive and high-quality products in the fight against rust is Alpina paint (Direct auf Rost). It belongs to the category of primer enamels and was specially developed for processing. This paint is different in that it does not contain lead, which is present in many other compositions. It is almost odorless, durable, and has good covering ability. Before applying it, it is enough to clean the metal only from dirt and dust.

On modern market car care products, new mixtures designed to combat rust have recently appeared. If previously paint and varnish substances could be applied to the body surface only after it was thoroughly cleaned, which was done with a grinder or a grinder, now you can paint directly over rust spots. That's why it got its name. It is used for quick car restoration. Depending on the method of use, all automotive anti-rust products are divided into:

• aerosol. Suitable for painting hard to reach places auto. Such paints are sold in spray cans, which simplifies the painting process for beginners;
• for manual application. Apply to the car surface with a brush.

To open a damaged area of ​​a car with anti-corrosion paint, a rough grind of the surface is enough to get rid of the loose layer of corrosion. Once you have achieved relative smoothness, you can apply the product directly to the cleaned metal.

The mixture that will prevent the spread of rust includes:

• fatty acid. They are responsible for neutralizing corrosion;
• glass particles. Protect the metal surface from mechanical damage;
• silicone This substance repels moisture.

You need to apply the substance to the car in 2 or 3 layers, waiting for the previous one to dry (from 1 to 1.5 hours). Complete hardening of the anti-corrosion mixture occurs after 14 hours.

It is presented on the market with products that, as a rule, are applied at the initial stage of painting a car. Some of its varieties can replace several products: primer, anticorrosive and auto enamel.

Advantages and disadvantages

Among the advantages that anti-corrosion compounds have, and in which it compares favorably with conventional automotive paint and varnish compositions. You can select:

• preventing the spread of rust spots and neutralizing existing stains with the transformation of corrosion into a protective film;
• Possibility of application directly to areas of corrosion;
• powerful water-repellent effect;
• Can be applied using a regular brush;
• quick drying;
• good covering ability;
• long service life of the coating created using the mixture (up to 8 years);
• variety of color shades.

Despite the huge number of obvious advantages. TO Anti-corrosion paint for cars also has several disadvantages:

• more high price compared to conventional paint;
• a ban on painting car parts whose temperature during operation reaches 150 degrees;
• a ban on applying the composition to metal that comes into contact with drinking water.

Manufacturers

There are several most popular brands on the anti-corrosion paint market for cars:

• Hammerite. Suitable for application directly onto rust (ideally, you can clean the surface from the loose layer). That is, there is no need for pre-priming. The product transforms pockets of corrosion into a water-repellent film. This way the paint comes out finishing coat, with which the machine can be given desired color- there are enough shades in the palette, among which there will certainly be the most popular ones;

• "Special Forces". The product from this company will replace primer, anticorrosive and ordinary enamel. The composition protects the car from mechanical and chemical influences, and also prevents water from entering the metal, which prevents its oxidation and the formation of plaque. The versatility of the product is achieved due to its combination of water- and dirt-repellent properties, mechanical strength, anti-rust and presence decorative covering. Can be used both at the starting and finishing stages of surface treatment of a rusty car. The manufacturer recommends applying it primarily to the fenders and bottom of the car, which are most often in contact with external environment;

• "Nerjamet". This paint is made on the basis of alkyd resins with the addition of polymers and organic solvents. Replaces primer, auto enamel and anti-corrosion agent. Suitable for application to both cleaned and unsanded rusty automotive surfaces. Suitable as a finishing decorative coating, as the product is available in a wide range color scheme;

• Unicom. The product also belongs to the 3 in 1 special paint and is an uralkyd enamel with the properties of a primer. It protects the surface of the car not only from rust, but also from aggressive chemical substances. Resistant to UV rays, fuel and lubricants, temperature changes. It can be used in the temperature range from -60 to +60 degrees, and can be applied at temperatures from +10 to +40 degrees. Product consumption is about 1 kg per 3-6 square meters. m. of car surface when applied in a single layer;
• "PF-132 Ferrokor". Can be used as an independent coating or base for coloring. Contains a corrosion modifier, has the properties of a primer and a paint coating.