| Numerical simulation of flow phenomena and optimum operation of tundish |
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| 引用本文： | SHI,Zhang-ming(时章明),E,Jia-qiang(鄂加强),LIU,Chun-yang(刘春洋),MEI,Chi(梅炽),ZHANG,Quan(张全),ZHOU,Ying-qi(周应其). Numerical simulation of flow phenomena and optimum operation of tundish[J]. 中南工业大学学报(英文版), 2003, 10(2): 155-158. DOI: 10.1007/s11771-003-0059-x |
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| 作者姓名： | SHI Zhang-ming(时章明) E Jia-qiang(鄂加强) LIU Chun-yang(刘春洋) MEI Chi(梅炽) ZHANG Quan(张全) ZHOU Ying-qi(周应其) |
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| 作者单位： | School of Energy and Power Engineering，Central South University，School of Energy and Power Engineering，Central South University，School of Energy and Power Engineering，Central South University，School of Energy and Power Engineering，Central South University，School of Energy and Power Engineering，Central South University，Xiangtan Iron and Steel Group Corporation Changsha 410083，China，Changsha 410083，China，Changsha 410083，China，Changsha 410083，China，Changsha 410083，China，Xiangtan 421000，China |
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| 摘 要： | 1 INTRODUCTIONDuringthecourseofcontinuouscastingsteel,theflowofliquidsteelintundishwasafairlycomplexprocesscontainingmomentumtransfer,masstransfer,energytransferandphase changeofmultiphasecomponents .Ac cordingtoRefs.[1,2 ],someinfluencingfactorsincastingsteelwerefound ,includingthecompositionofliquidsteel,thetechnicalparametersoftundishandre oxidationofmoltenmetal.Theprocesswouldaffectdirectlysurfacedefectsandinternalstructureformationofthecastingsteelproductsaswellastherealizationofhig…
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| 收稿时间： | 2001-09-10 |
Numerical simulation of flow phenomena and optimum operation of tundish |
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| Shi Zhang-ming , E Jia-qiang , Liu Chun-yang , Mei Chi , Zhang Quan and Zhou Ying-qi. Numerical simulation of flow phenomena and optimum operation of tundish[J]. Journal of Central South University of Technology, 2003, 10(2): 155-158. DOI: 10.1007/s11771-003-0059-x |
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| Authors: | Shi Zhang-ming E Jia-qiang Liu Chun-yang Mei Chi Zhang Quan Zhou Ying-qi |
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| Affiliation: | (1) School of Energy and Power Engineering, Central South University, 410083 Changsha, China;(2) Xiangtan Iron and Steel Group Corporation, 421000 Xiangtan, China |
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| Abstract: | To enhance the quality of grade 20 carbon-steel on the continuous casting production line, the mechanism of forming blowholes and non-metallic inclusions in billets and numerical simulation of flow phenomena about liquid steel in tundish were studied. The results show that the configuration and operation of tundish play an important part in quality assurance of grade 20 carbon-steel products. By optimizing the configuration of the tundish, the depth of liquid bath in tundish is enhanced, the impact of liquid steel is decreased, and the residence time of liquid steel is lengthened, which is useful for eliminating inclusions and blowholes and improving the service life of tundish. Improving the pouring and tapping operation of liquid steel can avoid the contact of liquid steel with air, and decrease re-oxidation. Strict control of the superheat degree of casting liquid steel can decrease the non-metallic inclusion content of the re-oxidation in billets and reduce the erosion of tundish. The inclusions and blowholes in the continuous casting grade 20 steel billets are reduced to a great extent and qualification rate is enhanced from 60% to 80%. |
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| Keywords: | tundish flow phenomena numerical simulation optimum |
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