Characterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatiles
In hemisphere point temperature (Thp) measurement of continuous casting mold flux, the evaporation of volatiles under high temperature will have a strong impact on the results. Based on the comprehensive analysis of hemisphere point method and its influencing factors, the corresponding volatile-cont...
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| Format: | Article |
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University of Belgrade, Technical Faculty, Bor
2022-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200019W.pdf |
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| author | Wang Z. Ren M.-M. Zhao J.-X. Zhang Z.-K. Wang H. Hu A.-L. Cui Y.-R. |
| author_facet | Wang Z. Ren M.-M. Zhao J.-X. Zhang Z.-K. Wang H. Hu A.-L. Cui Y.-R. |
| author_sort | Wang Z. |
| collection | DOAJ |
| description | In hemisphere point temperature (Thp) measurement of continuous casting mold flux, the evaporation of volatiles under high temperature will have a strong impact on the results. Based on the comprehensive analysis of hemisphere point method and its influencing factors, the corresponding volatile-containing mold flux and non-volatile mold flux were selected to get Thp with different heating rates. Combined with the Thp measurement and TG-DSC results, the effect of relevant factors during measuring process were analysed and the way to characterize and evaluate the effects were suggested. Furthermore, an improved method of mold flux melting point test was put forward. The results showed that for non-volatile mold flux, the temperature hysteresis had a greater effect than heat transfer delay and fractional melting. As for the mold flux with volatile, the effect of evaporation was greater than other factors. Traditional hemisphere-point method is no longer suitable for the volatile mold flux. In order to get through this problem, improved methods were proposed. One is measuring Thp traditional way, correcting the composition at the Thp, and corresponding Thp with the corrected composition. Another is taking the initial composition, revising the hemispherical point temperature Thp, and matching the revised Thp with the initial composition. |
| format | Article |
| id | doaj-art-dd7fdf85e8c34ecc9a743af4c69ab99b |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-dd7fdf85e8c34ecc9a743af4c69ab99b2025-02-02T17:20:48ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752022-01-0158337938710.2298/JMMB211209019W1450-53392200019WCharacterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatilesWang Z.0https://orcid.org/0000-0003-1487-3761Ren M.-M.1https://orcid.org/0000-0002-1080-8906Zhao J.-X.2https://orcid.org/0000-0002-5177-3244Zhang Z.-K.3https://orcid.org/0000-0002-5147-9846Wang H.4https://orcid.org/0000-0003-1485-0199Hu A.-L.5https://orcid.org/0000-0002-6715-1773Cui Y.-R.6https://orcid.org/0000-0001-7851-1546School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi, People’s Republic of ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi, People’s Republic of ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi, People’s Republic of ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi, People’s Republic of ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi, People’s Republic of ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi, People’s Republic of ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi, People’s Republic of ChinaIn hemisphere point temperature (Thp) measurement of continuous casting mold flux, the evaporation of volatiles under high temperature will have a strong impact on the results. Based on the comprehensive analysis of hemisphere point method and its influencing factors, the corresponding volatile-containing mold flux and non-volatile mold flux were selected to get Thp with different heating rates. Combined with the Thp measurement and TG-DSC results, the effect of relevant factors during measuring process were analysed and the way to characterize and evaluate the effects were suggested. Furthermore, an improved method of mold flux melting point test was put forward. The results showed that for non-volatile mold flux, the temperature hysteresis had a greater effect than heat transfer delay and fractional melting. As for the mold flux with volatile, the effect of evaporation was greater than other factors. Traditional hemisphere-point method is no longer suitable for the volatile mold flux. In order to get through this problem, improved methods were proposed. One is measuring Thp traditional way, correcting the composition at the Thp, and corresponding Thp with the corrected composition. Another is taking the initial composition, revising the hemispherical point temperature Thp, and matching the revised Thp with the initial composition.http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200019W.pdfmold flux with volatilehemispherical point temperaturemeasurement uncertaintyinfluencing factorscharacterization and analysis |
| spellingShingle | Wang Z. Ren M.-M. Zhao J.-X. Zhang Z.-K. Wang H. Hu A.-L. Cui Y.-R. Characterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatiles Journal of Mining and Metallurgy. Section B: Metallurgy mold flux with volatile hemispherical point temperature measurement uncertainty influencing factors characterization and analysis |
| title | Characterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatiles |
| title_full | Characterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatiles |
| title_fullStr | Characterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatiles |
| title_full_unstemmed | Characterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatiles |
| title_short | Characterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatiles |
| title_sort | characterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatiles |
| topic | mold flux with volatile hemispherical point temperature measurement uncertainty influencing factors characterization and analysis |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200019W.pdf |
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