Por: CARLO PIEMONTE (primetals technologies Austria), JUERGEN SCHOLLER (PRIMETALS TECHNOLOGIES AUSTRIA), Andreas jungbauer (PRIMETALS TECHNOLOGIES AUSTRIA), Christoph Fellner (PRIMETALS TECHNOLOGIES AUSTRIA)
Resumo:
Since the development of rolling technology, steel flat products have traditionally been divided into two prominent groups: hot-rolled coils (HRC) and cold-rolled coils (CRC).
After the invention of Arvedi Endless Strip Production (ESP) technology, featuring endless casting and rolling of hot-rolled coils, a new class of rolled coils emerged: the endless hot-rolled coils (eHRC).
eHRC dramatically extends the domain of hot-rolled material into applications traditionally served only by cold-rolled products. This new set of hot-rolled coils offers significant economic savings in transformation costs, dramatically reducing both CAPEX—thanks to the unprecedented layout compactness of ESP plants—as well as OPEX—thanks to the lowest total energy consumption and the highest material yield among all thin slab casting and rolling technologies on the market.
Due to the absence of any immediate fossil fuel consumption and the direct rolling of the cast slabs taking advantage of the original thermal energy of the liquid steel, Arvedi ESP also represents the standard in reducing greenhouse gas emissions in direct and indirect emissions.
The peculiar thermal regime during casting and rolling, without long holding times at high temperatures, makes the Arvedi ESP process much less prone to hot shortness phenomena and, hence, more tolerant concerning the presence of tramp elements in liquid steel. This feature makes Arvedi ESP the perfect match for electric arc furnace-based meltshops using large quantities of scrap. Arvedi ESP pairs with scrap-based production without sacrificing the final product’s quality, thus boosting the principles of the circular economy.
With Arvedi ESP, limited space requirements, best-in-class energy utilization, and reduced carbon footprint levels go hand in hand with superior coil quality for profitable and eco-friendly steelmaking.
