What Is Steel Spool used for Foil Rolling Mills?

Steel spools or steel sleeves in foil rolling mills play a crucial role in supporting and winding thin metal strips such as aluminum or copper foil. Their main function is to store and deliver the foil as it is rolled from the production line. It is important that the steel spools used for winding the foil are straight, possess high strength, excellent concentricity, and good thermal resistance to ensure the flatness and quality of the product during rolling and annealing.The spool must also have good dynamic balance to perform reliably at high speeds.