Not every object can be painted with traditional rollers and brushes. Therefore, today, airless painting is actively used for painting various metal structures. For this, specialized equipment is used, among which the spray gun and other airless paint spraying machines are most widely used.
- Airless Paint Technique
- Equipment
- The principle of operation of the equipment
- Equipment selection
- Conclusion
Airless Paint Technique
Application of paint by airless painting allows you to get a high-quality film, which not only gives the surface a presentable appearance, but also protects it from adverse effects. In this case, the paint is applied by dispersing paints and varnishes.
The airless painting method uses air as a braking medium to reduce the flow rate. The principle of such painting is based on spraying a liquid of a paint and varnish material under high pressure and exiting it at high speed through a nozzle, followed by deposition on the surface.
Compared with the method of pneumatic painting, spraying under high pressure can significantly save paints and varnishes and prevent excessive loss of paint in the environment. In addition to saving, this helps to improve working conditions and reduce environmental pollution.
Application by airless painting makes it possible to use formulations containing less solvent. By increasing the thickness of each paint layer, the technique reduces the total number of layers.
One of the key advantages of the method is the complete absence of air or various foreign particles in the stream of paint and varnish materials. This is ensured by the high rate of jet ejection from the nozzle. Due to the separation of the sprayed composition into the smallest surfaces, the technique provides the most uniform application of layers, which allows to achieve the highest quality of painting.
The technology of airless painting in the presence of high-quality equipment is quite simple and understandable. It eliminates the need for long-term training of the paintwork and long-term training of masters.
The main advantages of the method:
- reduction of painting time;
- reduction of environmental pollution;
- reduction in the number of layers of paint;
- reduced consumption of paint materials.
Equipment
As a rule, specialized equipment for applying by airless painting is used where it is necessary to paint a large surface area. In addition, the technique is actively used for industrial painting of large metal structures.
Airless paint is also used to create corrosion protection. Therefore, it is often used for painting cars. Equipment for painting by airless method is used for applying paints and varnishes to the walls of a house, roofs, ceilings, facades and so on.
Modern devices are characterized by ease of use, safety in maintenance and silent operation. In addition, such equipment is very mobile and therefore easily transported to the right place. Such devices are very convenient when you need to quickly paint a large surface area. Despite the fact that various devices are used for this method, they all have a common principle of operation and a similar design.
Components of the equipment:
- spray gun;
- airless spray nozzle;
- pump with capacity from 200 to 500 atm .;
- hoses designed for high pressure applications.
The principle of operation of the equipment
Modern equipment, with the help of which airless painting is carried out, works according to a rather simple principle. The device must be equipped with a piston or diaphragm type pump. This pump pumps paint towards the spray gun.
To start the pump, the power of an electric or pneumatic motor is used. In addition, large devices can be equipped with a gasoline engine.
Then, using a pump, high-pressure paints pass through a small diameter nozzle. This leads to the spraying of paint on the surface in the form of small particles.
to contents ↑Equipment selection
Today, the market is mainly represented by devices with pneumatic or electric drives. From this assortment you can choose the most suitable model for airless painting. When choosing, it all depends on the individual conditions in which it is necessary to paint.
For example, if you have to work with small objects between which you often have to move, then you should choose more compact models. In the absence of stationary electric power, devices with a pneumatic drive will be an excellent choice. For these devices, it is necessary to have a source of compressed air nearby, which is available in almost any industrial enterprise.
to contents ↑Conclusion
Thus, the airless method of painting is a convenient and economical method of painting large areas. If you have specialized equipment, this technique can be applied almost anywhere.
