1,Put the plain coils in the decoiling machine and let it trough the Material storage tower.(To prevent turn off the whole processing line when we change new coil)
2,Pre-processing. Firstly through the alkaline water tank to degrease the coil,secondly use the tap water to clean,then the acid to neutralize the remnant alkali,at last completely clean with pure water.
3,Drying.(the temperature is 210-230 degree Celsius.
4,Passivation.Add the chromium to passivate the coil and enhance the adhesive strength.
5,Coat the bottom of the coils with clear varnish or white and gray paint.
6,Drying
7,Use air cooling system or water cooling system to cool them down.
8,drying again.(water cooling system)
9,According to customers’ requirement to make second coating.
{C}10.{C}Drying
11,Cooling.
12,Covering the surface of coils with plastic film.
13,Packaging with inner paper tube about 15-20mm in thickness
14,Sending them to the storage.
