Effect of Continuous Casting Parameters on Quality of Billets Manufactured by UMMC Steel LLC
| Autor: | Vlasta D. Tutarova, Aleksey N. Shapovalov, Alexander N. Kalitaev |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
media_common.quotation_subject 05 social sciences Metallurgy 02 engineering and technology Condensed Matter Physics Atomic and Molecular Physics and Optics 020501 mining & metallurgy Continuous casting 0205 materials engineering 0502 economics and business General Materials Science Quality (business) 050203 business & management media_common |
| Zdroj: | Solid State Phenomena. 265:952-961 |
| ISSN: | 1662-9779 |
| DOI: | 10.4028/www.scientific.net/ssp.265.952 |
| Popis: | The analysis of the production records on casting 150õ150mm billets at UMMC Steel LLC has made it possible to define the basic factors worsening the billet quality and increasing the rejection of the rolled materials: steel casting in case the sulfur and phosphorus content exceeds 0.015 % and overheat is more than 30°Ñ. In order to minimize the formation of local nonuniformity in the billets manufactured from low carbon and medium carbon steel, open cast by CCM, it is necessary to maintain a maximum [Mn]:[S] ratio with [Mn]:[Si] ratio at the level less than 2-3, which ensures the formation of fusible deoxidation products and prevents the formation of solid conglomerates in steel. In order to reduce the formation of axial porosity it is advisable to retain the carbon content at the lower limit for the steel grade and avoid overheating of steel above the specified values. In order to minimize the consequences of the overheated steel casting it is necessary to adjust the billet casting rate in accordance with the operating procedures. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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