The falw of Powder Spraying and Solutions

The falw of Powder Spraying and Solutions
Flaw name : Color Shading
Cause of Emergence :
1. Coating thickness is not uniform;
2. The distribution of Curing Oven's temperature is not uniform;
3. The workpiece with different material、thickness、form and size can be production at the same time;
4. If the recycling sweep for Powder device、Spray gun、Spray powder room and Powder coating are not clean, when change the varieties of coating color;
5. The nonuniform of Powder Coating Color's distribution cause the color-shade;
Solutions :
1. Ensure the uniform of coating thickness;
2. The distribution of Curing Oven's temperature is uniform;
3. Should be classified by the material、thickness、form and size of workpiece, then proceeding baking-curing production according to the different baking times which had seted, in order to reduce the color-shade of coating;
4. When change the Powder, sweep up all parts, try to stagger the powder of large difference of color;
5. Improve the quality of powder, ensure the tiny difference of powder's L、a、b and Plus or minus a unified;
Flaw name : loss of gloss、yellow discolouration
Cause of produce :
1. The powder coating paint itself is not high temperature resistant high temperature easy to become yellow or resin and raw materials;
2. The poor quality of workpiece processing before, there are residues;
3. The curing time is too long or curing temperature is too high, local temperature too high or being too close to heating tube;
4. The powder mixed with two kinds of different color or properties.
Solutions :
1. Choose high quality powder coating;
2. Clean after pretreatment, painting brush clearance sundry;
3. Choose suitable curing temperature and time, increase curing furnace hot air circulation, to ensure that the workpiece with the heat source suitable distance;
4. To clean up in powder for powder barrels, powder recovery system, pipe, spray gun, spray chamber device, etc.



Aluminium Sheets
Aluminium Sheets

View Details
Aluminium Coils
Aluminium Coils

View Details
Aluminium Foils
Aluminium Foils

View Details
Aluminium Strips
Aluminium Strips

View Details
Aluminium Circles
Aluminium Circles

View Details
Coated Aluminium
Coated Aluminium

View Details
Mirror Aluminum
Mirror Aluminum

View Details
Stucco Embossed Aluminum
Stucco Embossed Aluminum

View Details