MAINTAINING THE PRESSURE AT GERMAN ALUMINIUM PLANT CUSTOMER PROFILE When a German aluminium plant in Alcoa, Hannover upgraded their extrusion line the company chose to install Control T echniques variable speed drives. KEY BENEFITS • ENERGY SAVING • COMPACT • INCREASED THROUGHPUT • LOWER MAINTENANCE COSTS THE CHALLENGE The two biggest extrusion lines accept billets of aluminium alloy of around 265mm and 412mm diameter and lengths between 400 and 1350mm, pre-heated to between 300 and 550°C. The billets are then extruded through two high pressure extruding presses at 56 MN and 33 MN respectively. Both extruders are hydraulically-powered, with the oil pressure of 250 Bar being generated by pumps. The pumps on the original hydraulic plant sent additional oil through a by-p

Join for free to read