Key Points and Precautions for Operating an Airless Sprayer
Release Date:
Mar 17,2020
During the coating process, if issues arise with an airless sprayer, the root cause is typically improper operation of the spray gun. Improper use can lead to uneven coatings, manifesting as joint marks, inconsistent coloration, and poor surface smoothness. Excessive coating thickness may result in sagging, with the surface drying while the underlying layers remain wet, leading to skinning. Conversely, insufficient coating thickness often occurs when, despite applying multiple coats as standard practice, the final film fails to reach the required thickness.
Airless sprayer During the coating process, if problems arise, the root cause is usually improper operation or misuse of the spray gun. Improper handling of this component can lead to uneven coatings, typically manifesting as lap marks, inconsistent coloration, and poor surface smoothness. Conversely, excessive coating thickness may result in sagging, with the surface drying while the underlying layers remain wet, leading to skinning. On the other hand, an overly thin coating often shows up as… Number After complete coating, the coating fails to achieve the required thickness.
When operating and using a spray gun, pay particular attention to the following three issues:
1. Spray gun distance: Place Airless sprayer The distance between the nozzle and the surface to be coated is called the spray gun distance, and… This component The preferred spacing is 30 to 40 cm. If the spacing is too narrow, to make industry The pressure is too high, resulting in significant recoil, and it also tends to cause uneven coating; moreover, to make industry The width (fan width) is very small, which can result in excessive thickness of the coated object and the coating film. Component The distance is too great, Homework Pressure loss is significant, and the coating tends to be lost. If the width is too great, the material applied in localized areas will be insufficient, resulting in a coating film that fails to meet the required thickness.
2. Spray fan angle: The fan’s surface and the spray nozzle should be perpendicular to each other. Manual operation. Airless sprayer When doing so, please note each time… to make industry The width should not be too great; otherwise, operational inconvenience may cause significant variations in the fan angle, resulting in uneven coating.
3. The spray gun’s travel direction and speed: Airless sprayer The spray gun’s direction of travel should always be parallel to the surface to be… to make industry on the object’s surface, and perpendicular to the spray fan’s surface, to ensure uniform coating. This component The operating speed should be stable, with a recommended range of 300–400 mm/s. Unstable speed results in uneven coating thickness: too fast produces a coating that is too thin, while too slow leads to a coating that is too thick.
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