Ways to prevent hanging line from sagging mainly include the following aspects:
Reduce the viscosity of the coating: Add an appropriate amount of diluent to the coating to reduce its viscosity, which is beneficial for the flow and distribution of the coating. However, it is important to pay attention to the amount of diluent used, as too much can cause the coating to become too thin and prone to sagging.
Control spraying distance and angle: If the spraying distance is too close or the spraying angle is not appropriate, it will cause the coating to accumulate on the surface of the workpiece, which is prone to sagging. To maintain an appropriate spraying distance and angle, so that the coating evenly covers the surface of the workpiece.
Control the movement speed of the spray gun: If the spray gun moves too fast, it will not provide enough time for flashing off, resulting in sagging. Maintain an appropriate spray gun movement speed to allow sufficient time for the paint to level.
Multiple spraying: A coating that is too thick at once can make it difficult for the coating to level and easily cause sagging. It can be sprayed multiple times, with a thin layer sprayed each time, gradually accumulating the coating to the desired thickness.
Control temperature and humidity: Excessive temperature or humidity in the environment can affect the leveling of the coating and easily cause sagging. To maintain a suitable ambient temperature and humidity and avoid adverse effects on the coating.
Choosing appropriate coatings and diluents: Different brands and types of coatings and diluents have different viscosities and leveling properties, which can affect the thickness and leveling of the coating. Choose coatings and diluents that match the surface of the workpiece to improve the uniformity and adhesion of the coating.
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Regular cleaning and maintenance of the spray gun: Keeping the spray gun clean and dry, regularly maintaining and servicing the spray gun can improve the spraying effect and quality, and reduce the possibility of sagging.
