Ferroalloy Quality for Electric Steelmaking with Nonmetallic Inclusion Control  Full text 

Gasik M. I.¹, Panchenko A. I.², Sal`nikov A. S.²

¹National  Metallurgical Academy of Ukraine
4 Gagarin Ave., Dnipropetrovsk, 49600, Ukraine 
²JSC “Dneprospetsstal”
81Yuzhnoe Shosse, Zaporizhzhya, 69008, Ukraine

UDC 669.168/.785:539.219.1

Metall. Min. Ind.,  2011, Vol. 3, No. 1, pp. 1-9

Abstract

Data about quality of ferroalloys used for electric steelmaking and alloys with special properties controlled by specified nonmetallic inclusions according to GOST 801-78 and ASTM E-45 (method A) are generalized and analyzed. Results of investigation of matrix and proeutectoid phases in the structure of industrial carbonaceous ferrochromium with application of electron microscopy and electron probe microanalysis as the main alloying ferroalloy at roller-bearing steel ШХ15СГ-В smelting are presented.

Keywords: FERROALLOYS, STANDARDS, MICROSTRUCTURE, MATRIX AND PROEUTECTOID PHASES, NONFERROUS IMPURITY METALS, CARBONACEOUS FERROCHROMIUM, ELECTRON MICROSCOPY, ELECTRON PROBE MICROANALYSIS, NONMETALLIC SILICATE AND SPINDEL INCLUSIONS