One of the special milestones is the completion of the new water management system. It is one of the core elements of our "New Heat Treatment Line" and will in future supply the MultiFlexQuench® with cooling water for the production of high-strength and wear-resistant plates.
The new water management system is our guarantee for a more sustainable and, thus, more environmentally friendly production. Several pipes with a large nominal diameter (flow) and a service water return channel connect it underground with the quench. Using pumps with multi-stage pressure processes, the MultiFlexQuench® can be supplied with several million liters of water per hour if required.
As early as the beginning of July 2020, the pump house was filled for the first time with make-up water from the Ilse river, which remains permanently in the cooling circuit.
After being used in the cooling process, the so-called service water is first filtered, then cooled and finally cleaned and treated for the next application, thus saving the environment and resources. Only minor evaporation losses have to be compensated by the controlled replenishment of supplementary water from the Ilse before it is fed back into the cooling process as service water.
The new levelling machine is designed for a thickness range of 5-25mm and for a maximum plate temperature of 500 ° C. This complete the existing levelling range of the Ilsenburger Grobblech GmbH. In addition, the levelling machine has a flatness measurement system with an integrated measurement table which allow a fully automatic measurement of the levelled heavy plates.
The workshop complex for the "New Heat Treatment Line" were handed over to the plant engineering company SMS in April 2020. Since then, various equipment of the new production line has been installed inside the approximately 31,000 m² workshop. The assembly of the furnace casing for the two heat-treating furnaces has already been largely completed. While the furnaces lining is still in process, the piping is already attached at the top (see photo).
The groundbreaking ceremony for the "New Heat Treatment Line" project took place in the presence of Saxony-Anhalt’s Minister President Dr. Reiner Haseloff and Prof. Dr. Armin Willingmann, Minister for Economic Affairs, on September 19, 2018. This is the largest single investment in the history of Ilsenburger Grobblech GmbH (ILG), a subsidiary of Salzgitter AG.
Prof. Dr.-Ing. Heinz Jörg Fuhrmann, Chief Executive Officer of Salzgitter AG, and senior executives of ILG are to present the investment project that will cost in excess of € 150 million. The new heat treatment line is the main project component through which Salzgitter AG concentrates the heavy plate activities of ILG and positions the company securely for future requirements. It comprises two roller-hearth furnaces, a MultiFlex-Quench®, a leveling machine, a blasting facility, a preservation line and a water treatment system. Implementation has been scheduled for the spring of 2020.
Since taking over the site in 1992, the Salzgitter Group has invested more than € 400 million in Ilsenburg. Prof. Dr.-Ing. Heinz Jörg Fuhrmann, Chief Executive Officer of Salzgitter AG, made the following statement on the "New Heat Treatment Line" project: "This ground breaking investment evidences the clear commitment of the Salzgitter Group to heavy plate production in Ilsenburg and proves that, with us, restructuring and future-proofing go hand in hand. It is also an expression of the appreciation and the trust that the Executive Board, the Group Management Board and the Supervisory Board have in the motivation, qualification and the loyalty of the workforce in Ilsenburg."
More than 200,000 tons of heavy plate can be annealed and subsequently processed further in the new plant that has been designed for plate in thicknesses between 5 and 175 millimeters, with widths of 600 to 3,500 millimeters. In lengths of between 4 and 24 meters, the plate has a maximum weight of 28 tons.
The energy-efficient heat treatment line fulfills the highest standards placed on quality and energy efficiency. With its extremely flexible cooling-down strategies, the integrated MultiFlex-Quench® enables the production of a broad product portfolio, including particularly sophisticated heavy plate grades. The materials spectrum comprises ultra strength carbon steels, wear resistant steels, steels alloyed with nickel, steels for the offshore construction of wind turbines, steel grades for pressure vessel construction, as well as case-hardened, quenched and tempered steels, to name a few.
The Investment in the "New Heat Treatment Line" with a volume of more than 150 million Euro is currently the biggest single investment in Saxony-Anhalt. It is the next logical step of our product range development of the last years. Hereby, we ensure a long-term top Position of Ilsenburger Grobblech in international competition.