One of the most common methods for repairing metal surfaces today is enamel, which is presented to the attention of buyers in a wide range. As an example, you can consider the soil-enamel XB-0278. This composition has the form of a suspension, which contains among the ingredients fillers and pigments in a solution of polymerization polycondensation resin and organic solvents. Modifiers are added to the ingredients during the manufacturing process. As a result, manufacturers managed to obtain a mixture, using which, it is possible to eliminate the need for the purchase of compositions that decorate the surface and convert rust. This helps to save not only money, but also strength during the work. In addition, there is no need to wait too long between layers.
Purpose and Description
The aforementioned primer is used for painting cast iron and steel products, as well as structures on the surface of which residues of rust or scale are held tightly. The thickness of the corrosion products can reach a value of 70 microns. During operation, painted surfaces can be exposed to the atmosphere, aggressive vapors and gases, as well as salts and chemicals, with only one note that their temperature should not exceed 60 ° C.
HV-0278 primer-enamel can act as an independent or as a multilayer coating together with weather-resistant varnishes or enamels. With this mixture, the bases are painted, the cleaning of which at the preparation stage may be difficult due to certain reasons. These include fences, garages or grills. The composition is used in car repairs for priming the surfaces of wings and other parts that do not require decorative finishing.
For reference
XB-0278 primer-enamel is a composition that is a three-in-one composition. The mixture combines the properties of not only enamel, but also the primer composition, as well as the rust converter. The coating can be applied to products that have been completely affected by rust or scale. If the application will be carried out in three layers, then the structure after processing can be operated in cold or temperate climates. In this case, the enamel layer will retain its properties for four years, as for decorative properties, this period will last 2 years.
Specifications
XB-0278 primer-enamel has a color that is set by the samples, but the shade may have some deviations. The appearance of the film is uniform, even, and also matte. Specialists may be interested in characteristics such as conditional viscosity. If a nozzle with a diameter of 4 mm is used, and the temperature is approximately 20 ° C, then for the black composition this characteristic is 30, while for a mixture of other colors - 40.
The mass fraction of substances in non-volatile state in black soil-enamel is 31%, for other colors this indicator is 37%. In the first case, the deviation can be 2%, in the second - 3%. If the semi-finished enamel is frayed, the degree will not exceed 40 microns. Up to 3 degrees, the composition will dry within an hour, this is true if the ambient temperature is 20 ° with a deviation of 2 ° in both directions.
The rust primer described may have a different hiding power depending on the color. This indicator varies from 60 to 120 g / m 2 . The film according to the pendulum device has a hardness of 0.15. But the elasticity of the film does not exceed 1 mm in bending. When hitting the U-1 device, the film strength is 45 cm.
additional characteristics
You may also be interested in the degree of adhesion of the film, which is 2 points or less. The rust conversion efficiency is 0.7. The film is resistant to the static effects of sodium chloride solution, this period will last for 72 hours.
Instructions for use: preparation before application
The soil described above must be applied to a previously prepared surface by rust. To do this, it is cleaned of loose coating, scale or loose rust, dirt and oils. It is necessary to remove dust and degrease the base with a solvent.
Before applying the primer-enamel, it must be mixed well. You can use for this method of airless spraying, roller or brush. When applied using a pneumatic sprayer, the mixture must first be diluted to the desired consistency. Metal products with the help of primer-enamel are coated in three layers, if the mixture will be used as an independent coating. If it is complex, then two layers will be enough. When painting surfaces that are coated with dense, retaining rust, a first developing layer should be applied with a thickness of approximately 15 μm to increase adhesion. The thickness of each subsequent layer should be equal to the limit of 28 to 32 microns. The total coating thickness will be approximately equal to 70-80 microns. Metal products are coated with primer-enamel at an ambient temperature of -10 to +35 ° C. A single layer coating will take about 110 g / m 2 .
Additional recommendations for use
Primer-enamel XB-0278, the characteristics of which were presented above, should be applied at ambient humidity, which does not exceed 80%. If we are talking about dyeing products, then dipping into the composition is permissible. After applying the first layer, it should be left for 2 hours at a temperature of +20 ° C. All subsequent layers are applied at intervals of 1 hour.
It should be remembered that the material is flammable, so working with it near open sources of fire is unacceptable. Painting is carried out in well-ventilated rooms, the master should wear rubber gloves and use personal protective equipment. HV-0278 gray soil-enamel should not enter the digestive organs, I should inhale the paint.
Composition cost
XB-0278 primer-enamel, the price of which will depend on capacity, is an anti-corrosion protection. For one kilogram of the mixture you will have to pay 118 rubles. This is true if you purchase a 20-kg capacity. One kilogram of the mixture will cost 123 rubles if you want to buy 25 kg packaging. In the first case, we are talking about soil-enamel, which belongs to the "Standard" class, in the second case, the price is for the "Premium class".
Conclusion
Painting metal surfaces using the above-described primer-enamel is a work in which unique material is used. It is intended for metal structures, including large ones, which are operated in atmospheric conditions. It can also be about products with a complex profile, the cleaning of which for some reason can be difficult.