An Aluminum Coil Coating Line receives coils with various tempers—from soft O-temper to hard H19. The temper influences how the strip behaves under tension and heat. Soft alloys elongate more during oven heating, requiring a higher dancer roller position to absorb slack. Hard alloys resist stretching but may transmit vibrations back to the coater. Thus, the line speed is set...

An Aluminum Coil Coating Line operates as a synchronized sequence of mechanical and chemical processes. The first critical element is the payoff reel, which uses a hydraulic expander to grip the coil core. A constant back-tension prevents telescoping during unwinding. As the strip leaves the payoff, it passes through a pinch roll pair that measures entry speed via a pulse encoder. This...