A global steelmaker based in Sweden has turned to a French industrial engineering group to modernize the thermal part of its continuous annealing line at its Borlänge plant.
Fives will update the SSAB facility with the goal to increase the efficiency and capacity of the existing CAL in order to produce advanced high-strength steel (AHSS) with a view to meeting increasing demand from the automotive industry. Once complete, the line will have the capacity to produce 650 000 tons per year, up from the current production rate of 500 000 tons per year.
Fives was contracted to modernize the thermal part of the CAL by replacing the jet preheating furnace and installing inductors in cascade to increase efficiency. Fives will install a new Stein jet preheating furnace to recover the heat from the radiant tube furnace and four CELES MP inductors.
The optimized design of the preheating furnace blowing boxes and tightness of the new seal is expected to result in the recovery of more power will be recovered, allowing the strip to be preheated to higher temperatures. CELES MP inductors, a proven technology, will then increase the strip temperature before the strip entries into the radiant tube furnace.
In total, 16 MW of power will be installed as part of this project. The modernization of the thermal part will be implemented very quickly and will be completed by November 2019.
