Experimental Study of non-metallic inclusions behaviour in the Tundish during Continuous Casting of Steel
(English)Manuscript (preprint) (Other academic)
The tundish has been experimentally mapped to study reactions between the molten steel and the cover powder as well as between the steel and the tundish lining. Steel samples were collected before casting, in the tundish during the casting process, and after casting. During sampling in the tundish the MISS sampler was used in order to make an in-depth study of two parallel positions of the steel/slag and steel/refractory interfaces. Thereafter, the samples were analysed with SEM in combination with EDS to determine the size and compositions of inclusions. The inclusion data were mapped in ternary phase diagrams to determine the origin of the inclusions. The results showed that two main inclusions groups, slag and deoxidation products, could be found in the samples. In addition, the samples contained inclusions that had been formed due to interactions with the refractory lining material.
tundish, clean steel, continuous casting, industrial plant trials, slag/steel interface, refractory/steel interface, non-metallic inclusions
Metallurgy and Metallic Materials
Research subject Metallurgical process science
IdentifiersURN: urn:nbn:se:kth:diva-202562OAI: oai:DiVA.org:kth-202562DiVA: diva2:1077505
QC 201702282017-02-272017-02-272017-02-28Bibliographically approved