Header Bild

CHAIR OF SIMULATION AND MODELING METALLURGICAL PROCESSES

Christian-Doppler Laboratory on Advanced Process Simulation of Solidification and Melting

Applicant: Prof. M. Wu
Scientists: (i) Dr. A. Vakhrushev, (ii) Dr. E. Karimi-Sibaki

Foundation: Christian-Doppler Society
Partners: (i) RHI Leoben, (ii) INTECO Bruck

Starting date: 01.07.2011
Termination date: 30.06.2018

Abstract Modul I:
Importance of hydrodynamics in peritectic steel thin slab casting, in cooperation with RHI AG, Technology Center Leoben. Thin slab casting (TSC) has, to a large extent, replaced the conventional slab casting for producing flat/strip products. The industry practices, however, have shown some drawbacks: sensitivity to breakout, edge cracks, surface crack or expansion scab scale (up-warping), and so on. Previous studies have demonstrated that those problems are directly and indirectly related to the flow behaviour in the mould region. The goals of this module are (i) to refine and apply a mixture solidification model to predict the shell formation in the thin slab casting mould region, with a focus on the turbulent flow and its impact on the two-phase mushy zone; (ii) to use this model to study the interaction between the melt flow and surface slag, including the transport phenomenon of the torn slag in the melt; and (iii) finally to assist the industry in optimization of the SEN and mould design.

Recent publications: J124, J106, C158, C145, C137, C129, C126, C116, C113, C111, C97, C95, N27, N26, N25

Abstract Modul II:
Electromagnetic processing of dual-phase fluids, in cooperation with INTECO Special Melting Technologies GmbH. Electro-Slag-Remelting (ESR) is an advanced technique for producing high quality steel ingots. Understanding of the remelting process and the ability to accurately model it, including the complicated interaction between the molten steel and liquid slag, is critical for controlling the ESR process. Initially this module will validate a previously developed numerical model with experimental data provided by the industry partner INTECO. Then some model adaptation and refinements would be made. Finally process simulations will be carried out to aid industry in optimization of the remelting process, with respect to both energy-saving and ingot quality improvements.

Recent publications: J127, J123, J121, J110, J102, J95, B18, B17, C151, C150, C149, C139, C138, C133, C131, C130, C124, C105, C104, C103, C102, C99, C98, N26, N25