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Bol'shakov V.I.,Ukrainian Academy of Sciences | Arzamastsev A.N.,OAO Novolipetskii Metallurgicheskii Kombinat NLMK | Lebed' V.V.,Ukrainian Academy of Sciences | Zherebetskii A.A.,Ukrainian Academy of Sciences
Steel in Translation | Year: 2013

The charging programs for a blast furnace with a nonconical charging system are investigated. On that basis, rational charging conditions are developed and tested. Experimental experience indicates more economical furnace operation, on account of the improved batch distribution over the charge hole and the reduced heat losses through the cooling systems. © 2013 Allerton Press, Inc.

Korshikov G.V.,Lipetsk State Technical University | Titov V.N.,OAO Novolipetskii Metallurgicheskii Kombinat NLMK | Mikhailov V.G.,Lipetsk State Technical University
Steel in Translation | Year: 2013

Thermodynamic analysis of the reduction of iron and the material balances of carbon shows that the CO2 levels in the blast-furnace gas may be maintained by lowering the carbon consumption in the direct reduction of iron from its oxides. To this end, natural gas and blast-furnace gas are injected into the furnace or else some of the oxidized sinter and pellets may be replaced by reduced pellets. © 2013 Allerton Press, Inc.

Polyakov M.Y.,OAO Novolipetskii Metallurgicheskii Kombinat NLMK | Bakhtin S.V.,OAO Novolipetskii Metallurgicheskii Kombinat NLMK
Steel in Translation | Year: 2015

OAO Novolipetskii Metallurgicheskii Kombinat (NLMK) is one of the largest producers of electrical steel in Russia and the world, with more than 50 years’ experience in the manufacture of transformer steel and more than 25 years’ experience in the manufacture of dynamo steel. The steel is produced to both national and international standards and meets the highest customer requirements. New products and improved technologies are constantly being introduced at OAO NLMK. Information is presented regarding the production of new grades of electrical steel (in particular, transformer steel with laser treatment, transformer steel of thickness 0.23 mm, and highly permeable dynamo steel). Prospects for future development are outlined. © 2014, Allerton Press, Inc.

Bel'skii S.M.,OAO Novolipetskii Metallurgicheskii Kombinat NLMK | Mukhin Y.A.,Lipetsk State Technical University | Mazur S.I.,OAO Novolipetskii Metallurgicheskii Kombinat NLMK | Goncharov A.I.,Lipetsk State Technical University
Steel in Translation | Year: 2013

A mathematical model is proposed for the shaping of cold-rolled strip from four-roller stands. Model calculations confirm the practical limits on the convexity of the hot-rolled steel's cross section. Saddle distortion of the strip cross section is discussed. © 2013 Allerton Press, Inc.

Tyulenev E.N.,OAO Novolipetskii Metallurgicheskii Kombinat NLMK | Dolgikh Y.N.,OAO Novolipetskii Metallurgicheskii Kombinat NLMK | Korobov A.A.,OAO Novolipetskii Metallurgicheskii Kombinat NLMK
Steel in Translation | Year: 2015

The production of low-alloy steel with low impurity content at OAO NLMK is described. Means of limiting the impurity content—to 0.001% S, 0.01% P, and 0.0002% H—are discussed. © 2014, Allerton Press, Inc.

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