When the coated surface develops a kind of finish that resembles an orange peel, the defect is termed Orange Peel. The coating is not smooth but exhibits the texture of an orange.
|Improper Thinning of paint||
• Choose solvents that evaporate slowly.
• Use recommended amount of thinner.
|Using Poor Grade Thinner||Use better grade thinner for material.|
|Failure to Deposit a Wet coat||
• Check solvent.
• Use correct spread and overlapping of stroke.
|Material Not Dissolved thoroughly||Mix material thoroughly|
|Presence of Drafts (Synthetics & Lacquers)||Eliminate excessive drafts|
|Presence of Low humidity, causing rapid dry conditions||Raise humidity of room.|
Defect due to problem in the Spray Gun
|Stroking is too Rapid||Stroke slowly and make deliberate slow spray passes.|
|Air Pressure is too Low in the Spray Gun||Increase atomizing pressure or reduce fluid pressure.|
|Using Wrong Air cap||Select correct air cap for the material and the feed.|
|Fluid Pressure in the Spray Gun is High||Decrease the fluid pressure|
|Holding the gun too Far from the Surface or too Near||Hold the spray gun at a distance of 6-10 inches from the surface.|
|Spraying is Striking a Wet and Sprayed surface||
• Do not over spray.
• Ensure not to spray on a surface that has been sprayed already.
• Spray detail parts first and end with wet coat.
|Air Temperature is too High and Hot||Use retarder solvent to lower the temperature.|