onnov Aluminium extrusion factory.
1-PRETREATMENT For POWDER COATING
Removes oil, dust, and rust from the surface of the aluminum workpiece and creates a corrosion-resistant “phosphating layer” or “chromium layer” on the aluminum surface, which also can increase the adhesion of the coating.
2-POWDER COATING BY ELECTROSTATIC SPRAYING
The powder coating is evenly sprayed onto the surface of the aluminum workpiece. And coating thickness should be about 60-80um, and less than 120um.
3-CURING AFTER POWDER COATING
The powder-coated aluminum workpiece should be placed in a high-temperature oven at about 200 ° C for 20 minutes to melt, level, and solidify the powder.
After curing, you will get the powder-coated aluminum.