PROCEDURE FOR MELTING STEEL MICRO ALLOYED WITH NITROGEN Russian patent published in 2010 - IPC C21C7/00 

Abstract RU 2389801 C2

FIELD: metallurgy.

SUBSTANCE: nitrogen containing alloy is used for treatment of steel melt in ladle with nitrogen containing materials. Alloy corresponds to composite alloying material on base of silicon nitride with ferro-silicide binding consisting of silicon, iron silicide and/or iron at the following weight ratio of components: ferro-silicide binding 20-50 %, silicon nitride - the rest; also nitrogen containing alloy has porosity 20-60 %.

EFFECT: stable specified concentration of nitrogen in steel without increase of process duration.

17 cl, 1 tbl, 9 ex

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RU 2 389 801 C2

Authors

Ziatdinov Mansur Khuziakhmetovich

Shatokhin Igor' Mikhajlovich

Dates

2010-05-20Published

2008-06-23Filed