Title: Effect of Calcium on the Quality of Tube Steel.
Authors: Dyudkin, D. A.; Grinberg, S. E.; Grabov, A. V.; Nazarov, S. N.; Motrenko, S. A.; Pogorelova, I. G.
Abstract: The article analyzes the effect of calcium on the transformation of nonmetallic inclusions in molten steel. Researchers took samples of three heats of steel 20SA having nearly the same chemical composition in terms of their contents of the main elements, aluminum, and harmful impurities. Standard procedures were employed on a ladle-furnace unit to obtain the samples with immersion-type samples before and after treatment of the steel. It was determined that, before the treatment, the nonmetallic inclusions in all three of the heats consisted of accumulations of aluminum spinel and sulfide eutectics present in the form of films along the grain boundaries.
Subjects: CALCIUM; STEEL; FURNACES; SPINEL; HEATING; TECHNOLOGY
Publication: Metallurgist, 2002, Vol 46, Issue 11/12, p344
ISSN: 0026-0894
Publication type: Academic Journal
DOI: 10.1023/A:1022938416393

Effect of Calcium on the Quality of Tube Steel.

Dyudkin, D. A.; Grinberg, S. E.; Grabov, A. V.; Nazarov, S. N.; Motrenko, S. A.; Pogorelova, I. G.