Dust (particles): in the paint film or on the surface with impurity particles, was granular bulge.
problem causes:
1, paint crystallization or contamination.
2, spraying environmental pollution (spray room, leveling, oven, electrostatic dust removal equipment, filters, etc.).
3, to be the surface of the workpiece is not handled clean (cleaning is not clean, poor grinding, etc.).
4, spraying process wind direction, the pressure does not meet the requirements.
5, out of the spray room staff dust control measures unreasonable.
Precaution :
1, to ensure that the paint system and pipeline cleaning, if necessary, increase the filter in the pipeline device; to ensure that the correct paint, paint the operation process; purchase inspection paint particles should be detected in size.
2, in accordance with the cleaning and maintenance plan, regular cleaning spray equipment.
3, to deal with the surface dust should be used to wipe the cloth and pretreatment tank to add cleaning agent and other methods to enhance clean.
4, the spraying process of the key point of the wind, the pressure on a regular basis.
5, the operator into the spray room must have the appropriate dust control measures.
Solution:
1, using 1000 mesh sandpaper will paint polished, polished with a polishing machine.
2, the use of point repair at the point of repair, repair the surface according to the point of repair operations guidance for painting, and other paint film is completely cured, and then repair the surface treatment.
3, the situation is serious, the application of 800 mesh sand on the defect at the polished after the re-packaging.