Airless nozzles are a commonly used type of nozzle in spray equipment. They atomize paint directly under high pressure, instead of using compressed air. The design and working principle of airless nozzles give them significant advantages over other types of nozzles in some applications.
Working Principle
High-Pressure Atomization
Airless nozzles pressurize the paint to extremely high levels (usually 2000-3000 PSI, or even higher) and then eject it through a very small nozzle aperture. The paint rapidly disperses and atomizes as it leaves the nozzle.
Uniform Coating:
The high-pressure atomization process produces very fine paint particles, which help to form a smoother, more uniform coating.
Design Features
The aperture of an airless nozzle is usually small, which helps to produce a finer spray.
Due to the high pressure of the paint passing through the nozzle, it is typically made from highly wear-resistant materials, such as tungsten steel or ceramics.
Spray Painting Techniques
Calibration of Nozzle Models
Nozzle Model and Film Thickness
For nozzles with the same spray width but different diameters, the thickness of the film sprayed by the larger diameter nozzle is considered thicker.
For nozzles with the same diameter but different spray widths, the thickness of the film sprayed by the larger diameter nozzle is considered thicker.
Spray Gun Distance
Spray Gun Position
The spray gun should always be kept perpendicular to the object being sprayed.
Spray Gun Movement
Spray Width Overlap
How to Spray Paint Corners
How to Spray Paint Flat Surfaces
