Effect of Forced Cooling Contraction on Shrinkage Cavity and Segregation of Ultra-thick Continuous Casting Slab
Due to the shrinkage cavities and macro segregation that frequently happened in ultra-thick slab and affected the slab quality, a new technique called forced cooling contraction, which added extra cooling water in solidification end has been provided. The slice moving boundary model was established,...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek
2021-01-01
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| Series: | Tehnički Vjesnik |
| Subjects: | |
| Online Access: | https://hrcak.srce.hr/file/375507 |
| _version_ | 1797207031795417088 |
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| author | Jiazheng Zhang Ling Yan Changjun Xu* Dejun Li* Lianwang Zhang |
| author_facet | Jiazheng Zhang Ling Yan Changjun Xu* Dejun Li* Lianwang Zhang |
| author_sort | Jiazheng Zhang |
| collection | DOAJ |
| description | Due to the shrinkage cavities and macro segregation that frequently happened in ultra-thick slab and affected the slab quality, a new technique called forced cooling contraction, which added extra cooling water in solidification end has been provided. The slice moving boundary model was established, the secondary cooling zone was divided into rolling zone, continuous bending zone and segment arc zone. The accuracy of secondary cooling calculation model was verified. The influence on shrinkage cavities and macro segregation was researched when the water flow was from 1,5; 2,5; 4 and 7 times of original water flow. Compared with original water flow, when time of water flow in segment arc zone is lower than 2,5, the shrinkage cavities length decreases. When water flow is 2,5 times of original water flow, the segregation degree and ratio decreased from 1,325 and 0,963 to 1,294 and 0,930, respectively. Combine with the results of shrinkage cavities and macro segregation. The considerable strength of forced cooling is 2,5 times of original water flow. |
| first_indexed | 2024-04-24T09:16:27Z |
| format | Article |
| id | doaj.art-dd5ab18fc5164aeb97469cf3db060110 |
| institution | Directory Open Access Journal |
| issn | 1330-3651 1848-6339 |
| language | English |
| last_indexed | 2024-04-24T09:16:27Z |
| publishDate | 2021-01-01 |
| publisher | Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek |
| record_format | Article |
| series | Tehnički Vjesnik |
| spelling | doaj.art-dd5ab18fc5164aeb97469cf3db0601102024-04-15T16:57:53ZengFaculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in OsijekTehnički Vjesnik1330-36511848-63392021-01-012831038104310.17559/TV-20200730073808Effect of Forced Cooling Contraction on Shrinkage Cavity and Segregation of Ultra-thick Continuous Casting SlabJiazheng Zhang0Ling Yan1Changjun Xu*2Dejun Li*3Lianwang Zhang4School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, Peopleꞌs Republic of China; State Key Laboratory of Metal Material for Marine Equipment and ApplicationSchool of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, Peopleꞌs Republic of ChinaState Key Laboratory of Metal Material for Marine Equipment and Application, Anshan, Liaoning Province, Peopleꞌs Republic of ChinaState Key Laboratory of Metal Material for Marine Equipment and Application, Anshan, Liaoning Province, Peopleꞌs Republic of ChinaSchool of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, People’s Republic of ChinaDue to the shrinkage cavities and macro segregation that frequently happened in ultra-thick slab and affected the slab quality, a new technique called forced cooling contraction, which added extra cooling water in solidification end has been provided. The slice moving boundary model was established, the secondary cooling zone was divided into rolling zone, continuous bending zone and segment arc zone. The accuracy of secondary cooling calculation model was verified. The influence on shrinkage cavities and macro segregation was researched when the water flow was from 1,5; 2,5; 4 and 7 times of original water flow. Compared with original water flow, when time of water flow in segment arc zone is lower than 2,5, the shrinkage cavities length decreases. When water flow is 2,5 times of original water flow, the segregation degree and ratio decreased from 1,325 and 0,963 to 1,294 and 0,930, respectively. Combine with the results of shrinkage cavities and macro segregation. The considerable strength of forced cooling is 2,5 times of original water flow.https://hrcak.srce.hr/file/375507forced cooling contractionmacro segregationshrinkage cavitiesultra-thick slab |
| spellingShingle | Jiazheng Zhang Ling Yan Changjun Xu* Dejun Li* Lianwang Zhang Effect of Forced Cooling Contraction on Shrinkage Cavity and Segregation of Ultra-thick Continuous Casting Slab Tehnički Vjesnik forced cooling contraction macro segregation shrinkage cavities ultra-thick slab |
| title | Effect of Forced Cooling Contraction on Shrinkage Cavity and Segregation of Ultra-thick Continuous Casting Slab |
| title_full | Effect of Forced Cooling Contraction on Shrinkage Cavity and Segregation of Ultra-thick Continuous Casting Slab |
| title_fullStr | Effect of Forced Cooling Contraction on Shrinkage Cavity and Segregation of Ultra-thick Continuous Casting Slab |
| title_full_unstemmed | Effect of Forced Cooling Contraction on Shrinkage Cavity and Segregation of Ultra-thick Continuous Casting Slab |
| title_short | Effect of Forced Cooling Contraction on Shrinkage Cavity and Segregation of Ultra-thick Continuous Casting Slab |
| title_sort | effect of forced cooling contraction on shrinkage cavity and segregation of ultra thick continuous casting slab |
| topic | forced cooling contraction macro segregation shrinkage cavities ultra-thick slab |
| url | https://hrcak.srce.hr/file/375507 |
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