ANDRITZ to supply heat treatment plant for SIJ Metal

International technology group ANDRITZ has received an order from SIJ Metal Ravne, Slovenia, for the supply of a complete heat treatment plant, 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 receive a special furnace for the most demanding heat treatment of products used in the energy sector, the aircraft industry and other special applications for which the company plans growth in the coming years in line with its business strategy.
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. ANDRITZ engineers will optimize the cooling medium flow structures within the quenching tanks by using computational fluid dynamics (CFD), including conjugated heat transfer.
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