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HomeCost-efficient metallurgy for the production of novel ultra high-strength deep-drawable steel grades with high Mn contents from 10 to 25 wt. % by using the EAF steelmaking route
Publication metadata
The project presented comprises a selection of theoretical investigations, laboratory development and pilot-scale trials conducted to address the current need for ultra high-strength deep-drawable steels with high manganese contents. The aim of the work was the selection and development of suitable technologies of primary and secondary metallurgy for the production of these steels with emphasis on the EAF route. An assessment of the theoretical aspects of the process kinetics of the different EAF processes routes — such as the direct melt preparation, modelling of the slag properties, decarburisation and desilicification — has been made. Further experimental measurements were conducted on the basis of the theoretical modelling of direct reduction and slag foaming, and the effects of high manganese melt on the typical EAF components (bottom electrode, tapping technologies). The advantages and/or disadvantages of an AC/DC EAF furnace are discussed. Based on these investigations pilot-scale trials were carried out. Since the use of scrap as raw material results in the inclusion of certain tramp elements, these were investigated through tensile, castability and weldability tests. For the use of direct reduction processes, suitable manganese ore availability was looked at. Economic and ecological/recycling aspects were taken into consideration and the results are presented for different EAF routes. Furthermore the implications of manganese dust for health and safety are also reviewed. The EAF route, as a result of this work, is probably the most economically feasible route for the processing of high manganese steels.
- Published:
- Corporate author(s): Directorate-General for Research and Innovation (European Commission)
- Themes: Basic metals industry, steel industry , Industrial research and development
- Subject: industrial research , manganese , materials technology , metallurgical industry , metalworking , steel , technological process
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| ISSN 1018-5593 | ISBN 978-92-79-14599-5 | DOI 10.2777/91273 | Catalogue number KI-NA-24225-EN-C |
- Released on EU publications website:
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