Serial number reason for the phenomenon of solution
1 Powder Pellet 1. Powders exposed to moisture, heat
2. Storage extended
3. By weight of one. Stored in dry cool place, containers should be sealed
2. In the use of shelf-life period
3. Containers to survive under the pressure of
The volume of the powder spray gun 2
Uneven one. For the powder is not normal
2. Insufficient air pressure and pressure instability
3. Lose powder tube is too long one. Check whether the plot device powder for powder or plug
2. To increase the pressure and stability of the pressure
3. To minimize the transmission powder tube length
3 gun plug 1. Powders mixed with coarse granular foreign body
2. Powders in the nozzle adhesion sclerosis
3. Conveying powder low pressure one. Powder screening
2. Nozzle regular cleaning
3. Increasing pressure transmission powder
4 Workpiece not pink one. Output voltage less than
2. Air pressure is too large
3. Workpieces derusting not completely
4. Workpieces grounding bad one. Increase the output voltage
2. Adjust air pressure
3. Thoroughly cleaning the surface
4. Check whether the workpiece grounding
5 dusty powder 1. Spray chamber recycling bags are not vacuum cleaners
2. Ventilation pipe plug
3. Air pressure is too high a volume of more than one powder. Check recovery BAG
2. To check the ventilation tube
3. Adjust air pressure
6 powder brand one. Workpieces good grounding
2. Nozzle and the workpiece a short distance
3. Powder density is too large
4. Spray resistance is too large one. Check workpiece grounding device
2. Workpieces with the nozzle to maintain a certain distance
3. To reduce the lost air pressure and inspect the powder recovery unit
4. The replacement of resistance
7 surface dots 1. Workpieces deal left unclean particles
2. Re-use recycling powder 1 screening. Workpiece surface should be clean treatment
2. Recovery powder screening reuse
8 linked to one surface flow. Spraying thickness 1. Spraying when the proper thickness of
9 surface of orange peel 1. Spray pressure, spraying uneven
2. Powders Pellet, poor atomization spray technology master
Not to Pellet powder, a powder spray gun atomization adjust the degree of
10 Component 1. Baking time is too long or too short, baking temperature too
High or too low
2. Oven temperature local anomaly 1. Reference for powder curing conditions to provide calibration
2. To check the situation of oven heating components
 
11 the surface of one missing light. Gruel new powder in the powder recovery problems
2. By different manufacturers or different types of powder mixed one. Suspended powder have questions
2. To avoid a mixture of powder
12 coating uneven one. Spray gun and workpiece distance near
2. High-voltage electrostatic generator voltage instability
3. Powder Pellet 1. Adjust the distance between the workpiece and the spray gun
2. Adjustable high-voltage electrostatic generator
3. To prevent the powder Pellet
13 pinhole 1. Output voltage High
2. Spray gun and workpiece a short distance
3. Coating thick one. To reduce the voltage
2. Spray gun away from the workpiece appropriate
3. Strict control of coating thickness
14, coating the surface of
Enough hardness 1. Bake bake time or temperature enough 1. In accordance with the suppliers to provide proper curing conditions improve temperature
Degrees or extension of time
15 Shrinkage 1. Workpiece surface has oil
2. Uneven surface
3. By different manufacturers or different types of powder with each other
Mixed one. Workpiece must be clean
2. Workpiece surface polished smooth
3. Clean up the spray equipment and recovery unit, to avoid
A mixture of powder
16 bubbles 1. Workpiece surface treatment, the water is not thoroughly dried
2. Workpieces do not have pores or smooth high carbon content of 1. To enhance the surface treatment order
2. The surface should be polished smooth
17 off one film. Before the deal is not clean
2. Curing temperature was not enough time
3. Workpieces oxide film removal is not one. Workpiece must be clean before the treatment
2. In accordance with the suppliers to provide proper curing conditions improve
Temperature or to extend the time
3. Polished with sandpaper to remove the oxide film
18 Workpiece drawing one corner. 1 gun voltage too high. Appropriate to reduce the voltage