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Bubble-Inclusion Interaction During Argon Bubbling in a Tundish: Assessment With Automated Inclusion Microanalysis and Data Analytics

Year: 2023

Type: conference-paper

Abstract: ABSTRACT Industrial data and modeling studies indicate a beneficial effect of argon bubbling in tundishes, promoting removal of oxide inclusions. However, the mechanism of inclusion removal is not clear – whether by direct interaction with the bubbles, or redirected steel flow to the steel-slag interface. This study presents results from automated inclusion analysis of Al-killed and Ca-treated steel samples. These were taken in industrial trials with different argon flow rates and were analyzed for inclusion composition, size distribution, and concentration. Results indicate that argon stirring affects different types of inclusions differently – specifically spinels and calcium aluminates.

Source: Iron & Steel Technology Conference and Exposition (AISTech)

DOI: 10.33313/387/104

Authors: Thiago A. Oliveira, P. Chris Pistorius, Mauro E. Ferreira, Dai Tang

Institutions: Carnegie Mellon University, Nucor (United States)

Language: English

Topic: Metallurgical Processes and Thermodynamics

Subfield: Metals and Alloys

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

OpenAlex ID: W4381296005

FWCI:

Cites: 27

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Related to: 10