How to avoid coating sagging in spraying equipment?

In the spraying process, coating sagging is a major "chronic disease", which not only affects the appearance of the product, but may also reduce the protective performance. However, an excellent spraying equipment assembly line can cleverly resolve this problem with key designs.

First, the precise spray gun control system is the core. The forward-looking powder coating line is equipped with a high-precision spray gun, and its spraying pressure and powder output (or paint spraying amount) can be finely adjusted. For example, when facing complex cross-sections such as aluminum profiles, the pressure and flow rate can be adjusted instantly according to the spraying requirements of different parts to ensure that the paint is evenly attached at an appropriate rate to avoid excessive accumulation of local paint and cause sagging. At the same time, the atomization effect of the spray gun is crucial. By optimizing the internal structure and airflow design of the spray gun, the paint is sprayed in extremely fine and uniform particles. These particles can quickly spread and dry on the surface of the profile, leaving no "opportunity" for sagging.

Secondly, the intelligent monitoring and feedback mechanism of the powder coating machine is indispensable. The built-in sensor senses the coating thickness, humidity, ambient temperature, humidity and other parameters in real time, and transmits the data to the control system. Once the coating thickness is detected to be close to the critical value of sagging, the system will automatically fine-tune the spraying parameters to achieve dynamic balance. For example, when the humidity in the workshop increases and the drying speed of the paint slows down, the equipment automatically reduces the spraying rate to ensure that each layer of coating can be cured in the best condition.

Furthermore, the adapted coating pretreatment link helps significantly. Some high-end spraying equipment has functions such as paint stirring and preheating. Stirring ensures that the coating composition is uniform to avoid sagging caused by abnormal local concentration due to precipitation; preheating appropriately reduces the viscosity of the coating, making it easier to disperse during spraying, while speeding up the drying process and curbing the sagging phenomenon from the source.

As a professional Coating Line Factory,We will keep your product coating smooth and flat, conquer the market with excellent quality, and start a worry-free spraying journey.