Changes in inclusion characteristics during sampling of liquid steel

In order to improve the process control during the steelmaking process, it is essential to obtain knowledge, as well as interpret information, on the characteristics of non-metallic inclusions in liquid steel samples. The purpose of the present study is to evaluate the effect of different sampling c...

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Bibliographic Details
Published in:Ironmaking & steelmaking 2012-01, Vol.39 (1), p.67-75
Main Authors: Ericsson, O T, Lionet, M, Karasev, A V, Inoue, R, Jönsson, P G
Format: Article
Language:English
Subjects:
Alloy steels
Characteristics
Inclusions
Iron and steel making
Liquids
Precipitation
Sampling
Steels
Sulfur
Sulphur
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Summary:In order to improve the process control during the steelmaking process, it is essential to obtain knowledge, as well as interpret information, on the characteristics of non-metallic inclusions in liquid steel samples. The purpose of the present study is to evaluate the effect of different sampling conditions on the inclusion characteristics. The changes in number, size and composition of primary inclusions due to the precipitation of secondary inclusions are studied. This is investigated in laboratory scale samples from an Fe-10 mass-%Ni alloy as well as industrial steel samples with varying contents of oxygen and sulphur. The results show that in most cases, the inclusion population can be separated, using a size condition, into primary (⩾0·6 μm) and secondary (
ISSN:0301-9233
1743-2812
DOI:10.1179/1743281211Y.0000000044