Improvement and application of dynamic secondary cooling water distribution control model for slab
LI Jie1,2, SUN Yan-hui2, ZHENG Jing-hui3, LIU Xiao-jun3
1. Technology Research Institute of HBIS, Shijiazhuang 050000, Hebei, China; 2. University of Science and Technology Beijing, Beijing 100083, China; 3. WuSteel of HBIS, Pingdingshan 467000, Henan, China
Abstract：“The improved slab age model” is studied and established, and the dynamic secondary cooling water distribution system based on “the improved slab age model” is developed independently. According to the superheat degree, the improved slab age model dynamically adjusts the ki value in the original model, endows ki value with process attribute, making it more reasonable. The application of the system improves the surface temperature fluctuation of the continuous casting slab under the unsteady state casting, improves the surface quality of the slab during the unsteady state casting, and the edge defect rate of continuous casting billet decreased by 13.8%. In addition, the rapid surface temperature return of the slab during unsteady state was restrained, and the defect rate of middle crack in slab was reduced by 21.9%.
李杰, 孙彦辉, 郑京辉, 刘小军. 板坯动态二冷配水控制模型改进和应用[J]. 连铸, 2020, 39(2): 27-30.
LI Jie, SUN Yan-hui, ZHENG Jing-hui, LIU Xiao-jun. Improvement and application of dynamic secondary cooling water distribution control model for slab. CONTINUOUS CASTING, 2020, 39(2): 27-30.
MA J C, LU C S, YAN Y T, et al.Design and application of dynamic secondary cooling control based on real time heat transfer model for continuous casting[J]. International Journal of Cast Metals Research, 2013, 27(3): 135.
2020, Vol. 39 
