China Enters the High-Quality, Ultra-Thin Strip Market Arvedi Esp Installations in China

Abstract

Two Arvedi ESP plants going into operation in 2015 will allow a Chinese steel producer to better serve the extremely attractive local and export markets for highquality, thin-gauge strip products. The energy consumption and the related costs are reduced by up to 45% compared to conventional casting and rolling processes. This also means a major reduction in CO2 emissions. The new plants are designed for an annual production capacity of 2 x 2.55 million tons of high-quality, ultra-thin, hotrolled strip products with widths of up to 1,600 mm and thicknesses down to 0.8 mm. The project scope also features a comprehensive training and assistance package for plant start-up and operations by personnel from the existing ESP plant at Acciaieria Arvedi SpA, Italy. The plant setup, the trainings and assistance program as well as latest results from the ESP plant in Italy will be presented. While this project is under execution three further ESP lines have been ordered by the same customer summing up now to five ESP lines at the same location.

Understanding mould powders for high-speed casting

“…With this concept, casting speeds up to 7 m/min are reported; the breakout ratio is very low. 9 Furthermore, POSCO improved the ISP-concept enabling a maximum casting speed of 8 m/min and an increased production capacity. Some main points of interest are: A funnel-shaped mould including the EMBr, mould width change technology, mould powder properties, breakout prediction and secondary cooling enabling uniform slab surface temperatures and the control of bulging.…”

Influence of Silicon and Tramp Elements on the High-temperature Oxidation of Steel in Direct Casting and Rolling Processes

“…It became possible to produce a wide variety of steel grades with these technologies like ultra-low carbon (ULC) to high carbon steels (HC), electrical steels, different types of high-strength and alloyed steels. 42,46,47,[51][52][53][54][55] Summing up, over the last decades, TSCR processes have become highly competitive, mainly due to the development of the endless process (Arvedi ESP), higher thin slab thickness, and the steadily extended production portfolio. The ongoing transformation from integrated steel production towards scrap-based electric arc furnace steelmaking and the dynamic development of TSCR processes result in the question of the role of tramp elements for surface oxidation in solid state in TSCR processes in general.…”