Nonmetallic inclusions in electric furnace steel ShKh15SG-V bars

The mechanisms of formation and the methods of controlling nonmetallic inclusions (NIs) in bearing steel are considered. The number and composition of NIs in electric furnace ShKh15SG-V steel bars made using various versions of heat and out-of-furnace treatment are studied by fractional gas analysis...

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Veröffentlicht in:	Russian metallurgy Metally 2011-06, Vol.2011 (6), p.555-564
Hauptverfasser:	Gasik, M. I., Grigorovich, K. V., Panchenko, A. I., Sal’nikov, A. S., Shibaev, S. S., Garber, A. K., Dalmatov, A. Yu
Format:	Artikel
Sprache:	eng
Schlagworte:	Bars Bearing steels Calcium Chemistry and Materials Science Electric furnaces Gas analysis Materials Science Metallic Materials Nonmetallic inclusions Quality of Metal Products Steels
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Beschreibung
Zusammenfassung:	The mechanisms of formation and the methods of controlling nonmetallic inclusions (NIs) in bearing steel are considered. The number and composition of NIs in electric furnace ShKh15SG-V steel bars made using various versions of heat and out-of-furnace treatment are studied by fractional gas analysis and number estimation according to State Standard GOST 801-79. A high calcium content is found to result in large globular NI numbers in the bars. Fractional gas analysis is shown to correctly determine the oxide inclusion content in steel.
ISSN:	0036-0295 1555-6255 1531-8648
DOI:	10.1134/S0036029511060097