SIJ Metal Ravne signed an agreement for the supply of a complete heat treatment plant with the international technology group ANDRITZ, including two ANDRITZ MAERZ® double-chamber furnaces, a charging machine and high-volume quenching tanks, as well as an automation system. Commissioning is scheduled for the second quarter of 2021.With this investment, SIJ Metal Ravne will get a special furnace for the most demanding heat treatment of products used in energy sector, aircraft industry and other demanding sectors for which we plan a growth in the following years in compliance with our outlined business strategy of development in the company.
Each ANDRITZ MAERZ® double-chamber furnace consists of a high-temperature furnace (650 to 1,220°C) with recuperative burners and a low-temperature furnace (200 to 830°C) with forced circulation. Both furnace types meet the qualifications for AMS 2750 E classification 2, which requires very high precision in the thermal process (+/- 6°C). The charging machine is designed as a portal-type unit for handling charging material up to 25 tons. The high-volume quenching tanks using polymer and water also comprise the complete water treatment plant and four cooling towers located outside the production hall. ANDRITZ engineers will optimize the cooling medium flow structures within the quenching tanks by using computational fluid dynamics (CFD), including conjugated heat transfer.
SIJ Group is the largest vertically integrated Slovenian steel producer and one of the largest producers of stainless and special steels in Europe.
SIJ Metal Ravne from the SIJ Group is the third largest tool steel producer in the European Union. The company produces a broad range of more than 200 steel grades in different dimensional shapes, from carbon and alloyed structural steels to tool and special steels in the form of rolled and forged products.