Please use this identifier to cite or link to this item:
Title: Comparative study of inclusion removal from liquid steel in the RH and argon purging processes.
Authors: Campos, Marina Braga
Peixoto, Johne Jesus Mol
Silva, Carlos Antônio da
Silva, Itavahn Alves da
Keywords: Inclusions
Bubbling station
Issue Date: 2020
Citation: CAMPOS, M. B. et al. Comparative study of inclusion removal from liquid steel in the RH and argon purging processes. REM - International Engineering Journal, v. 73, p. 353-359, jul./set. 2020. Disponível em: <>. Acesso em: 12 set. 2021.
Abstract: In order to improve steel quality, it is necessary to increase the cleanliness of the liquid steel; that is, to reduce the number and size of the inclusions in the liquid steel, as well as to control their chemical composition. For this purpose, processes (with different operating costs) are used, such as the bubbling of inert gas in the steel ladle and its treatment in the vacuum degasser RH. This article deals with inclusion removal through an argon purging process and RH treatment, and provides a comparison of their effectiveness using industrial data and a mathematical model. The inclusion count shows a strong exponential decay for RH treated heats with chemical heating, as expected. The same behavior is not seen for RH treated heats without chemical heating as well as an argon purging process. It is suggested that in the later cases, there could exist competition between inclusion removal and inclusion generation from sources, such as refractory-slag-metal interaction and open eye atmosphere metal interaction. It has been concluded that the RH and the argon purging processes are both able to reduce the amount of inclusions. However, the bubbling process would require a much smaller gas flow rate to avoid open eye formation.
ISSN: 2448-167X
metadata.dc.rights.license: This is an open-access article distributed under the terms of the Creative Commons Attribution License. Fonte: o PDF do artigo.
Appears in Collections:DEMET - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
ARTIGO_ComparativeStudyInclusion.pdf1,49 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.