Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/80273
Type: Artigo de periódico
Title: Influence of refining time on nonmetallic inclusions in a low-carbon, slicon-killed steel
Author: Fernandes, M
Pires, JC
Cheung, N
Garcia, A
Abstract: Nonmetallic inclusions are harmful to the mechanical properties of every kind of steel produced worldwide. The greater the size of the inclusion present in the structure of a determined kind of steel, the greater its negative effect on the quality of the steel. Therefore, the objective of this work was to investigate the size, the quantity, the shape and the chemical composition of nonmetallic inclusions formed throughout the refining process of silicon-killed, low-carbon steel, as a function of the treatment time in a ladle furnace, trying to ensure the flotation of inclusions bigger than 25 mum. This investigation was carded out using a scanning electron microscope (SEM), with an analysis system using energy dispersive spectometry (EDS). Based on this work, it was possible to know more precisely the nature of the inclusions, the necessary time to ensure flotation of large inclusions, the efficiency of the slag to capture the inclusions, and the inclusion level of the steel throughout its refining process to try to obtain a higher quality steel product. (C) 2004 Elsevier Inc. All rights reserved.
Subject: nonmetallic inclusions
steel refining
SEM/EDS
Country: EUA
Editor: Elsevier Science Inc
Rights: fechado
Identifier DOI: 10.1016/j.matchar.2004.01.003
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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