X-Roll® MultiFlex-Quench for Acroni
SMS group supplied a plate heat treatment line to Acroni, Slovenia, providing the annual capacity of 80,000 tons of heavy plate. Part of the HTL is the world’s first X-Roll® MultiFlex Quench. Other main equipment of the line are the high and the low roller hearth furnaces.
Acroni is a company of the Slovenian Steel Group (SIJ). Acroni is a highly specialized supplier of plates and strips made from stainless grades, tool steels, abrasion-resistant steels and HSLA grades. The company is able to expand its product portfolio further with the heat treatment line from SMS.
The line is equipped with a high-temperature roller hearth furnace for hardening and normalizing. The furnace consists of two chambers, in which the plates are annealed in a nitrogen-based inert gas atmosphere. Radiant tubes indirectly heat the material up to 1100 ° C.
The innovative X-Roll® MultiFlex-Quench is characterized by its exceptionally high degree of flexibility. In contrast to conventional quenches, this type offers variable setting options, so that all cooling patterns from slow cooling to abrupt quenching are covered and a wide product portfolio is achieved. Furthermore, the X-Roll® MultiFlex-Quench quench offers an improvement of the plate flatness by means of hydraulic clamping.
In addition, the line is equipped with a low-temperature furnace for the reheating of plates. In this openly fired roller hearth furnace, the plates can be heat-treated at temperatures between 400 and 800 °C. SMS group supplied all ancillary equipment such as the complete plate conveyor system, the entire water supply and treatment system and the X-Pact® electrical and automation systems.
SMS group also supports Acroni in the development of heat treatment cycles for new material types, which are stored in the level 2 online model for controlling the thermal process.
Impressions
Main data
- Plate thickness: 3 – 100 mm
- Plate width: 2,560 mm
- Capacity: 80,000 t/year