The most important thing in a paint spray gun is the nozzle of the spray gun, and nozzle failure is a common problem. Below, let's take a look at what causes paint spray gun nozzles to fail.
1. Erosion
When the liquid with high flow rate passes through the metal surface at the nozzle hole. It will erode the nozzle hole, causing the nozzle pressure to decrease and the spray state to become irregular. The probability of erosion of the nozzle of an automatic spray gun depends on the hardness of the liquid, the spray pressure, the type of chemical material used and the particulate impurities in the liquid used to make the nozzle severely eroded.
2. Accidental damage
Improper use and failure to maintain in time are the main causes of accidental damage to the nozzles of paint spray guns. Although the nozzle mouth is usually designed to be concave, the offset structure of the fan nozzle is easily damaged.
3. Corrosion
When chemical materials are used to spray the workpiece, these chemicals can also cause corrosion of the nozzle material.
4. Blocking
The build-up of chemicals and impurities on the inside or outside edges of the nozzle can cause nozzle blockage. This will affect the spray shape of the nozzle. This affects the spray pressure.
5. Temperature
The nozzle of the paint spray gun works at high temperature or abnormal temperature for a long time, which will cause the nozzle to be damaged due to the softening of the material.
