Affiliation:
1. State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 China
2. School of Advanced Engineers University of Science and Technology Beijing Beijing 100083 China
3. Technology center Delong Steel Co. LTD. Xingtai Hebei 054000 China
4. Technology center Xinjiang Bayi Iron & Steel Co. LTD. Urumqi 830000 China
5. Technology Center Jiangsu Boji Spray Systems Co., Ltd. Yangzhou Jiangsu 225267 China
Abstract
The spray cooling efficiency is greatly influenced by the nozzle arrangement, which correlates with the water flux distribution on the blank surface in continuous casting process. Herein, the temperature‐hot ductility quantitative relation (THDR) model is established with the high‐temperature tensile test data, and the effects of nozzle arrangement on the distribution of water flux, temperature, and hot ductility are investigated. The results show that the spray distance influences the water flux in the whole spraying coverage area, while the nozzle spacing only impacts the water flux in the spray overlapping area. The distribution uniformity of the slab surface temperature gradually increases with increasing the spray distance, meanwhile, it increases first and then decreases as the nozzle spacing increases. Moreover, the hot ductility distribution is calculated using the THDR model, and the results reveal a different variation. Specifically, the sizes of the high hot ductility areas in the slab surface center and edge decrease with the spray distance increases, and the uniformity of the hot ductility distribution decreases with the increase of nozzle spacing. Combining the above research, a new strategy/approach for nozzle arrangement is proposed, which can improve the crack resistance of the slab surface.
Subject
Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics
Cited by
2 articles.
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