Community Research and Development Information Service - CORDIS

Abstract

The presented project addresses a current need for novel ultra-high strength deep-draw-able steels with high manganese contents with extremely improved properties for lightweight construction. 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 an emphasis on the BOF route. A combination of theoretical investigations, laboratory development and pilot-scale trials was used. Various fundamental aspects related to the production of these steel grades have been investigated like metal/slag reaction and melt refining, decarburization of the melt, reactions with the refractory and so on. This was done by laboratory scale experiments and theoretical modelling. Based on these fundamental investigations, pilot scale trials in an experimental BOF have been performed which have proven the possibilities to alloy crude steel (produced in the same vessel by LD process) up to 20% wt. Mn. Small-scale trials have demonstrated possibilities and limitations of secondary metallurgical treatments. A kinetic process model to investigate the principles of different process routes for the production of high Mn steels was set up and was applied to three principle production routes (BOF based, VOD and an EAF based route). The role of tramp elements for the considered production routes has been regarded. Their influence on the technological steel properties has been investigated as a prerequisite to define allowable contents to be fulfilled by the metallurgical process. The costs for production have been calculated for the regarded routes. Special aspects of the specific route and alloy are discussed.

Additional information

Authors: REDEKER C F, Salzgitter Mannesmann Forschung GmbH (SZMF), Salzgitter (DE);RENNER H-J, Salzgitter Mannesmann Forschung GmbH (SZMF), Salzgitter (DE);SCHÖTTLER J, Salzgitter Mannesmann Forschung GmbH (SZMF), Salzgitter (DE);SPITZER K-H, Technische Universität Clausthal, Institut für Metallurgie (TUC), Clausthal-Zellerfeld (DE);ROHRBERG D, Technische Universität Clausthal, Institut für Metallurgie (TUC), Clausthal-Zellerfeld (DE);NEWIRKOWEZ A, Technische Universität Clausthal, Institut für Metallurgie (TUC), Clausthal-Zellerfeld (DE);ACHARYA S, Technische Universität Clausthal, Institut für Metallurgie (TUC), Clausthal-Zellerfeld (DE);NYSTRÖM R, MEFOS - Metallurgical Research Institute AB (MEFOS), Luleå (SE);HAHLIN P, MEFOS - Metallurgical Research Institute AB (MEFOS), Luleå (SE)
Bibliographic Reference: EUR 22991 EN (2008), 180 pp. Euro: 20
Availability: Katalogue Number: KI-NA-22991-EN-S The paper version can be ordered online and the PDF version downloaded at: http://bookshop.europa.eu
ISBN: ISBN: 978-92-79-07400-4
Record Number: 201010022 / Last updated on: 2010-01-07
Category: PUBLICATION
Original language: en
Available languages: en