Heat-resistant metal paint and its scope of application
Heat-resistant metal paint and its scope of application
From this article, you can learn the features and specifics of such a finishing material as heat-resistant metal paint. The text sets out the main criteria for the selection of formulations, the classification of existing materials that are resistant to high temperatures, their advantages and disadvantages, average prices for the purchase of popular dyes. The article considers the possibility of painting the metal surfaces of the grill, oven, etc.
Heat-resistant metal paint is used mainly for painting stoves, barbecues, heating batteries, etc.
Heat-resistant metal paint: properties and classification of compositions
Many owners of country houses face the problem of finishing fireplaces, stoves and other objects made of metal. This type of material is vulnerable to the effects of moisture and other environmental factors, therefore, the renewal of the paintwork is aimed not only at maintaining an aesthetic appearance, but also at extending the operational life of the structure itself.
The use of fire-resistant paint on metal gives an aesthetic appearance and prolongs the life of the product
Not every finishing material is able to withstand the effects of high temperature. Therefore, for the processing of furnace and fireplace structures, experts recommend buying heat-resistant metal paint.
Pay attention! The usual composition is able to withstand the influence of temperature no more than 40-50 ° C. The designs of iron furnaces installed in the bath are heated to 600-800 ° C. In the Gorenje zone, this indicator can reach almost 1000°C. Professionals recommend selecting the composition taking into account the type of furnace, because the degree of necessary heat resistance depends on it. For example, brick walls of furnaces can only warm up to 200 °C.
Features and properties of heat-resistant paint on metal up to 1000 degrees
The thermal stability of such dyes is due to the presence of organosilicon elements in their composition. In addition, the material contains fillers, polymers and coloring pigments. Thanks to these components, the dye provides the metal with protection against corrosion and environmental influences.
Modern heat-resistant paints allow you to paint metal products in any color
The polymers present in the composition are characterized by high strength. As a rule, they are made on the basis of oxygen, silicon and organic radicals. This is not the end of the list of components that provide thermal resistance to refractory metal paint for a barbecue or oven. The high stability parameter is due to aluminum powder.
The operational life of most heat-resistant dyes reaches 15 years. The method of application of the material, as well as the volume of organic resins in its composition affects the elasticity and adhesive properties of the coating, its drying time.
Advantages of heat-resistant metal paints for furnaces:
- electrical insulation properties – the material is suitable for finishing metal structures through which electricity can pass;
- anti–corrosion protection – heat-resistant paint prevents the destruction of metal under the influence of moisture;
- resistance to the influence of aggressive media – provides protection from the negative effects of chemicals;
- ability to maintain properties at high and low temperatures, as well as sudden changes;
- ductility – during heating, the metal is subject to expansion, so the finish will stretch instead of being covered with cracks and crumble.
Heat—resistant paint is suitable for use on any kind of metal – steel, iron, cast iron
Classification of refractory paints by metal
Heat-resistant dyes are classified according to different characteristics. Most often, the compositions are divided by the type of packaging. Consumers can buy heat-resistant metal paint for an oven or barbecue in the form of a 400-500 ml can, cans (weight from 1 kg), buckets or barrels. The volume of the composition in the bucket can vary between 10-20 kg. The capacity of the barrels is 40 kg or more.
Pay attention! The storage period of the heat-resistant dye depends on the manufacturer and the components. However, the minimum term of any material is 7 months.
The materials also differ in the method of application. Most often, a roller, brush or sprayer is used for these purposes. The consumption of the composition depends on the tool used to paint the surface. For example, if you apply heat-resistant enamel on metal with a brush, the material consumption will be 20-40% more than when using a spray gun. The resulting coating turns out to be almost the same in terms of durability. The increased consumption of the dye is also accompanied by the use of an aerosol method of application.
The material consumption on the surface depends on the method of applying the paint
Regardless of the method of application, it is necessary to select a dye with high adhesive properties. In other words, the composition should be well fixed on the metal surface. Only under this condition will the coating be able to provide a reliable level of protection against corrosion damage.
Scope of application of heat-resistant paints on metal
Heat-resistant dyes are used for finishing products operated in conditions of strong exposure to moisture and high temperatures.
The capabilities of such trains will be useful for such objects:
- steam rooms;
- saunas;
- drying chambers (for these conditions it is recommended to buy a fire-fighting paint on metal, capable of withstanding from 600 to 1000 ° C);
- furnaces;
- barbecues.
Often, temperature-resistant compounds are used to process elements of heating systems. Enamels with similar properties are widely used in the automotive industry. Specially for this purpose, dyes are produced for mufflers, brakes, engine parts and other elements.
Under the influence of high temperatures, the metal becomes vulnerable to corrosion, so you should definitely use a heat-resistant paint
Mainly such dyes are used for the treatment of metal surfaces, although compositions with similar properties for the treatment of brick, stone and wood can be found on sale.
Important! Before purchasing the paint, be sure to read the manufacturer’s instructions and its recommendations regarding the use of the composition on certain surfaces. If it is supposed to open the furnace structure in the bath, care must be taken that the finish not only shows resistance to temperature, but also withstands the influence of moisture.
Varieties of heat-resistant metal paints: price and types of finishing materials by composition
The composition of the components in the finishing material is extremely important. The degree of resistance of the dye and the temperature conditions in which it can be used depend on this.
Taking into account the above , the following categories of compositions are distinguished:
- alkyd;
- epoxy;
- dyes based on heat-resistant glass and composite materials;
- ethyl silicate and epoxyester (single-component);
- silicone (single-component).
Water-dispersion, alkyd or silicone paint is used to paint batteries.
Alkyd or acrylic dyes are used for processing parts of heating systems. They are able to withstand temperatures up to 100 °C. The category includes materials with zinc and zinc-phosphate compounds. The cost is from 2500 to 5500 rubles.
Epoxy dyes can withstand temperatures not exceeding 200 °C. Some types of dyes do not require prior application of a primer to the metal surface. The average price of this category of dyes is in the range of 2000-8000 rubles, depending on the manufacturer and the volume of the container.
The temperature limit of ethyl silicate and epoxyester dyes is 400°C. The composition of such materials contains metal powder. The price range for these types of dyes covers 3200-9000 rubles. for the packaging. Such compositions are used for processing barbecues and barbecues.
Before painting, it is recommended to thoroughly clean the metal surface
Single-component silicone compounds fully withstand the influence of temperatures up to 650 ° C. Manufacturers use polymer-type silicone resins as the basis for creating such dyes. Aluminum powder is often added to the composition of the material. The price of such paint varies between 300-6100 rubles.
Compositions with heat-resistant glass and composite materials withstand temperatures from 650 to 1000 ° C. The price of refractory paint for metal of this type is 2500-8000 rubles. for the packaging.
Which is better to buy heat-resistant paint for metal: the choice of composition
In order to choose the optimal dye, it is necessary to take into account the main criteria put forward for materials of this type:
- heat resistance level;
- manufacturer’s recommended staining temperature;
- time to complete drying (no more than 3 days);
- technical characteristics of the composition.
On sale there are dyes with varying degrees of heat resistance – from 120 to 1000 ° C. This indicator is selected taking into account the conditions in which it will be operated. The highest heating is characterized by a metal furnace (800 ° C), the maximum limit of radiators installed in apartments is 90 °C.
For painting metal stoves and fireplaces, you need to choose a paint with a high level of heat resistance
Useful advice! If you add organic resin to the composition of heat-resistant metal paint for the grill, you can speed up the drying time of the coating, as well as enhance plasticity and adhesive properties.
The quality of the staining result depends on whether all the requirements of the application technology are supported. These requirements include preliminary surface preparation, the material overlay scheme, and the temperature regime to be adhered to during operation. In most cases, experts recommend painting metal surfaces at air temperatures from -30 to 40 ° C. The subsequent operation and service life of the coating depends on this.
What kind of paint to paint a metal grill: heat-resistant, heat-resistant and refractory compounds
Metal surfaces that are subjected to high heat during operation are covered with refractory, heat-resistant or heat-resistant dyes. Heat-resistant finishing options are recommended to be used to cover structures whose temperature does not rise above 600 ° C.
Metal surfaces exposed to high temperatures must be coated with heat-resistant dyes
It is allowed to use such dyes for processing metal parts of a brick furnace or structures made entirely of this material, including barbecues. At the same time, it is not necessary to apply a heat-resistant compound to the surface of the equipment installed in the bath. Most often, such furnaces are heated to 800 ° C. Therefore, it is better to use heat-resistant dyes for these purposes.
Refractory finishing options are designed for painting products that are in close proximity or in contact with an open fire. For barbecues and barbecues, this is the best option. The use of such dyes for processing other objects will be impractical and will entail unjustified costs.
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How to choose paint for walls in an apartment? Main types and properties
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For products that are heated no more than 200 ° C, it is best to buy heat-resistant metal paint in a can. High-temperature compositions are used for painting radiators and elements of heating systems in apartments and houses, parts of automobile engines, as well as seams and masonry furnaces made of brick. For low temperature conditions, heat-resistant varnishes that can withstand heating 250-300ºC are also suitable.
For painting individual elements of a stove or fireplace that are not directly heated, a paint with a low level of heat resistance is suitable
Pay attention! Do not confuse refractory compounds with flame retardant dyes. With strong heating, such materials can swell, become covered with bubbles and block oxygen access to the surface, preventing its destruction.
Recommendations for choosing the optimal heat-resistant paint for furnaces
If you cover a metal furnace with a conventional dye, the coating will turn black very quickly and become a source of smoke and unpleasant odors. The composition must correspond to the type of surface on which it will be applied. The scope of application is always indicated by the manufacturer on the packaging. If the composition is intended for processing different materials, all this information in a smaller font can be found on the jar. In the absence of this data, as well as the brand name, it is worth refusing to purchase. Such questionable dyes can be of poor quality and dangerous to health.
Decorative qualities are also important. Most often, the buyer is faced with a choice between gray or black heat-resistant silver paint on metal. There are other shades on sale, although they are more difficult to find, for example, red, blue, white, green. Manufacturers offer dyes with which you can create a matte or glossy coating. In this case, the gloss may have a different degree of gloss.
Manufacturers of heat-resistant paints offer a wide range of color options in matte and glossy shades
Features of heat-resistant paint for calipers and mufflers
Heat-resistant dyes are used to process car parts made of metal. Moreover, the coating performs not only a decorative function.
The use of heat-resistant paint for the muffler, drums, calipers and other elements provides additional protection, as well as improves the characteristics of the machine. In large cities in winter, roads are sprinkled with reagents aimed at combating ice. Such aggressive substances can cause corrosion of metal parts of the car in contact with snow or water.
Thanks to the dye, the heat transfer of the calipers of the machine increases. The fact is that these elements have a porous surface, where dirt inevitably accumulates. As a result, the cooling time increases significantly. In addition, it is difficult to clean the node without removing the wheels. After processing the parts with a heat-resistant dye, a smooth coating is formed on the surface, which improves heat exchange and prevents the accumulation of dirt. And the process of cleaning the node can be easily carried out with a small trickle of water.
Heat-resistant paint can be used for calipers, engine and other elements of the car
Dyes for processing metal parts of the car are supplied in three forms:
Useful advice! It is not necessary to completely remove the calipers for staining. This will not only entail additional costs, but also cause problems in the operation of the brake system.
The choice of paint for calipers and application technology
Despite the popularity of heat-resistant paint on metal in cans due to the low cost, this finishing option cannot be called the best. Most often, 1 can barely covers the surface of 2 drums. In addition, the technology requires carefully closing other parts of the car so that they do not get dirty during spraying.
The dye in the jar costs a little more than an aerosol can. This mixture allows you to get a clean and high-quality coating with a brush. It does not require the removal of the brake system from the discs. The disadvantages of the compositions in the jar include the long time spent on staining.
Applying paint with an aerosol can allows you to use the material evenly and economically
The sets of heat-resistant dyes contain a complete set of tools designed for full-fledged coloring of metal parts of the car.
As a rule, the set includes the following components:
- a cylinder with a liquid for cleaning the surface;
- heat-resistant dye;
- priming composition;
- auxiliary devices (brush with stiff bristles, protective gloves).
On average, the coloring process, along with waiting for the paint to dry, lasts about 2 hours.
The application of the dye is carried out in the following order:
Previously, the calipers are thoroughly cleaned, after which the paint is applied
Before applying the second layer of the material, you need to wait at least 35 minutes. The most popular and in-demand dyes in this segment are: OMP, Kerry, Motip, Foliatec and Kudo.
The choice of heat-resistant paint for the grill or oven: popular manufacturers
Most consumers prefer to buy Cert coloring compounds from the Spectrum company. This type of finishing material is in high demand due to optimal technical parameters. The coating is able to withstand temperatures in the range from -65 to 900 °C. The manufacturer offers an extensive palette of colors, including 25 shades.
Pay attention! Each shade of heat-resistant Cert paint has its own temperature limit. Therefore, when choosing a color, it is necessary to take into account the operating conditions recommended by the manufacturer.
Temperature range of Certa Dyes
| Shade of paint | Temperature indicator, °C |
| black | 900 |
| gold, copper, white, green, blue, turquoise, light blue, brown | 700-750 |
| yellow and other colors of the palette | 400-500 |
The coloring of the material also affects the cost of the dye, which is in the range of 300-550 rubles. for 800 g.
The alkyd dye Thermal from the Tikkurila brand forms a coating on the surface of the material that does not crumble for 3 years. Even if the metal is heated to a red glow, the dye will retain its properties and attractive appearance. The cost of a 330 ml jar is 600 rubles. The material has one specific feature. The polymerization process of the composition is possible only if the treated surface is heated to 230 ° C for 1 hour.
The following types of paints are considered equally high-quality: Hansa, Kudo, Bosni, Hammerite, Elkon. The recommended number of layers, the temperature parameters of the application and the requirements for the coloring process are different for each manufacturer. To get a high-quality result, it is very important to follow the instructions on the package.
