coated sheets ppgl az150 sheet coil coil insert expanded coil insert precast colour coated steel1

The main production process is to use a crane to lift the raw material coil onto the receiving platform of the color coating unit during production, and then transport the steel coil to the coil seat in front of the color coating unit by a transportation cart. At this point, the bundling belt is removed, and then the feeding cart loads the raw material steel coil onto the uncoiler. The leading belt device automatically guides the leading end to the cutting head at the cutting head shear, and the strip steel is sewn with the previous strip steel at the sewing machine. The stitched strip steel first enters the pre cleaning section for alkaline water flushing, alkaline water brushing, and hot water flushing. Then, it is dried by hot air before entering the loop. After leaving the loop, it enters the pre-treatment section where it undergoes alkaline water flushing, alkaline water brushing, and two-stage hot water flushing. Then, it undergoes tempering treatment and two-stage hot water flushing. After being dried by hot air, it enters the chemical coating machine and is coated with a layer of water-based chromium on the surface of the strip steel, After leaving the chemical coating machine, it enters a hot air dryer for drying. The water-cooled rollers arranged behind the hot air dryer cool the strip steel to below 40 ℃, enter the roller coating machine for initial coating, and then enter the hanging curing furnace for drying. The hanging curing furnace is equipped with sag detection. The temperature of the strip steel leaving the curing furnace is 260 ℃. It enters the water quenching tank, is dried by air, and then enters the precision coating machine for precision coating through the turning roller. It then enters the precision coating curing furnace to dry the paint. If producing hot film plates, the strip steel leaving the curing furnace needs to be rapidly cooled to a specific temperature before entering the hot film machine. The strip steel leaving the film machine is then cooled in a water quenching tank and dried. The strip steel enters the exit loop, passes through the inspection table and exit shear, cuts the strip steel into the required small coils, and then the finished coils are transported to the exit steel coil seat by the unloading car. Use a workshop crane to transport the finished product rolls to the packaging unit for packaging, and then send them to the finished product warehouse for storage.