Now everyone knows the advantages of prepainted steel coils, because its characteristics are recognized by everyone, so the utilization rate is getting higher and higher, and the forming is simple, the chemical resistance is good, and the appearance is beautiful. Let's take a look at the paint explosion problems of the color steel coils.
Prepainted steel coils have excellent color, corrosion resistance, decoration, and also have the high strength and easy processing of steel plates. However, paint explosions may sometimes occur during use. The explosion paint of color steel coils not only affects the appearance of the decoration of the board, but also What is important is that the exposed paint film directly corrodes and oxidizes the unoiled zinc layer of the substrate, which will seriously affect the anti-corrosion performance of the color steel coil and reduce the service life of the color steel coil.
Prepainted steel coil should be maintained regularly, and the curing oven plate thermometer should be updated in time, and the coefficient of the tracking plate thermometer should be calibrated with temperature measurement paper, and finally the value of the plate temperature system of different colors should be determined to ensure that the temperature difference between the exposed temperature of the plate and the calibration plate ±4℃ in order to guide production. Strictly follow the 50~80℃ requirement of passivation liquid curing temperature provided by the manufacturer, confirm that 50~80℃ is the detection temperature range of chemical coating plate temperature, measure it roll by roll with low temperature temperature measuring paper, and boil the color roll samples with quality problems. Time tracking detection. In order to ensure the controllable thickness of the color steel coil coating, ensure the passivation quality of the color steel coil coating, improve the adhesion of the paint film and the substrate, and prevent the explosion paint quality accident caused by the passivation of the color steel coil coating, the "Color Steel Coil Roll coating passivation film re-inspection and chemical coating roll change process requirements".
The above is about the paint explosion problem of prepainted steel coil, because its advantages are more and more widely used, if you don't understand, please contact us, we will give you professional answers to avoid losses caused by blind use, hope the above content will be useful for everyone help.
