Optimal Design of the Submerged Entry Nozzle for Thin Slab Continuous Casting Molds
For the purpose of increasing the capacity of an Angang Strip Production (ASP) continuous caster and the surface quality of a medium-thin slab with mold sections of 150 × (1020–1540) mm<sup>2</sup>, the present work investigated the influences of the submerged entry nozzle (SEN) structur...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/8/1223 |
| _version_ | 1827684699207630848 |
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| author | Mingtao Xuan Min Chen |
| author_facet | Mingtao Xuan Min Chen |
| author_sort | Mingtao Xuan |
| collection | DOAJ |
| description | For the purpose of increasing the capacity of an Angang Strip Production (ASP) continuous caster and the surface quality of a medium-thin slab with mold sections of 150 × (1020–1540) mm<sup>2</sup>, the present work investigated the influences of the submerged entry nozzle (SEN) structure and main operating parameters on the flow characteristic and temperature distribution in the mold by physical and numerical simulations. The results showed that the typical “double-roll” flow and a central jet were formed through the three-port SEN. With the original SEN, the mean wave height exceeded the critical value of 5.0 mm after the casting speed was increased due to the strong upper recirculation flow. By the slight increment of the bottom port area and the side port angle of SEN, the mean wave height was obviously decreased below 4.4 mm due to the depressing of the upper recirculation flow after the casting speed increased. Meanwhile, the temperature distribution was slightly changed by using the optimized SEN. The practical application showed that the breakout rate decreased from 0.349% to 0.107% and the surface defect rate decreased from 0.54% to 0.19% by using the optimized SEN, while throughput reached the new level of 3.96 t/min. |
| first_indexed | 2024-03-10T08:35:52Z |
| format | Article |
| id | doaj.art-15d57f4c3448499e904d83dab4a9660d |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T08:35:52Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-15d57f4c3448499e904d83dab4a9660d2023-11-22T08:41:18ZengMDPI AGMetals2075-47012021-07-01118122310.3390/met11081223Optimal Design of the Submerged Entry Nozzle for Thin Slab Continuous Casting MoldsMingtao Xuan0Min Chen1School of Metallurgy, Northeastern University, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, Shenyang 110819, ChinaFor the purpose of increasing the capacity of an Angang Strip Production (ASP) continuous caster and the surface quality of a medium-thin slab with mold sections of 150 × (1020–1540) mm<sup>2</sup>, the present work investigated the influences of the submerged entry nozzle (SEN) structure and main operating parameters on the flow characteristic and temperature distribution in the mold by physical and numerical simulations. The results showed that the typical “double-roll” flow and a central jet were formed through the three-port SEN. With the original SEN, the mean wave height exceeded the critical value of 5.0 mm after the casting speed was increased due to the strong upper recirculation flow. By the slight increment of the bottom port area and the side port angle of SEN, the mean wave height was obviously decreased below 4.4 mm due to the depressing of the upper recirculation flow after the casting speed increased. Meanwhile, the temperature distribution was slightly changed by using the optimized SEN. The practical application showed that the breakout rate decreased from 0.349% to 0.107% and the surface defect rate decreased from 0.54% to 0.19% by using the optimized SEN, while throughput reached the new level of 3.96 t/min.https://www.mdpi.com/2075-4701/11/8/1223ASP continuous casting moldSEN designphysical and numerical simulationflow characteristictemperature distribution |
| spellingShingle | Mingtao Xuan Min Chen Optimal Design of the Submerged Entry Nozzle for Thin Slab Continuous Casting Molds Metals ASP continuous casting mold SEN design physical and numerical simulation flow characteristic temperature distribution |
| title | Optimal Design of the Submerged Entry Nozzle for Thin Slab Continuous Casting Molds |
| title_full | Optimal Design of the Submerged Entry Nozzle for Thin Slab Continuous Casting Molds |
| title_fullStr | Optimal Design of the Submerged Entry Nozzle for Thin Slab Continuous Casting Molds |
| title_full_unstemmed | Optimal Design of the Submerged Entry Nozzle for Thin Slab Continuous Casting Molds |
| title_short | Optimal Design of the Submerged Entry Nozzle for Thin Slab Continuous Casting Molds |
| title_sort | optimal design of the submerged entry nozzle for thin slab continuous casting molds |
| topic | ASP continuous casting mold SEN design physical and numerical simulation flow characteristic temperature distribution |
| url | https://www.mdpi.com/2075-4701/11/8/1223 |
| work_keys_str_mv | AT mingtaoxuan optimaldesignofthesubmergedentrynozzleforthinslabcontinuouscastingmolds AT minchen optimaldesignofthesubmergedentrynozzleforthinslabcontinuouscastingmolds |