Journal
REFRACTORIES AND INDUSTRIAL CERAMICS
Volume 59, Issue 6, Pages 573-578Publisher
SPRINGER
DOI: 10.1007/s11148-019-00275-4
Keywords
pip steel; nonmetallic inclusions; deoxidation; oxygen thermodynamic activity; equilibrium constant; periclase lining; modification
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Funding
- RF Government [218, 02.025.31.0141]
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Results are provided for an experimental study of the effect of deoxidation on the composition of nonmetallic inclusions in pipe steels melted in a vacuum induction furnace with a periclase lining. Thermodynamic calculations are made for oxygen activity within melts with lanthanum, cerium, aluminum, and yttrium for the metal of four melts. Conditions are evaluated for magnesium spinel inclusion formation in relation to deoxidant used and the extent of deoxidation. The effect is demonstrated of reduced aluminum concentration during metal ladle treatment on nonmetallic inclusion composition and the possibility of modifying them in the course of an industrial pipe steel melt.
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