Abstract
Degassing and deep decarburization of steel in a two-position vacuum-treatment unit in the oxygen-converter shop at OAO Magnitogorskii Metallurgicheskii Kombinat is described. That unit went into operation in February 2010. To fulfill orders for pipe steel with specified hydrogen content (no more than 3 ppm in the final steel) and nitrogen content (no more than 0.006%), the minimum vacuum-degassing time is determined, the influence of additions of slag-forming materials and ferroalloys after vacuum degassing on the hydrogen content in the steel is assessed, and the potential of the new vacuum-treatment unit for deep decarburization of steel in natural and forced conditions is demonstrated.
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Original Russian Text © O.A. Nikolaev, D.N. Chigasov, A.A. Stepanova, Yu.M. Filippov, S.V. Meshcherov, 2012, published in “Stal’,” 2012, No. 2, pp. 25–27.
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Nikolaev, O.A., Chigasov, D.N., Stepanova, A.A. et al. Vacuum treatment of steel in a two-position unit in the oxygen-converter shop. Steel Transl. 42, 141–143 (2012). https://doi.org/10.3103/S0967091212020167
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DOI: https://doi.org/10.3103/S0967091212020167