Abstract：By inclusion analysis and nitrogen-oxygen analysis on unsteady slab generated in continuous casting process, the effect of various types of unsteady factors on slab qualityhas been quantitatively ascertained. Inclusions were classified by inclusion quantity density, and the priority order of slab qualityis obtained: normal slab>tail slab>change SEN slab>head slab. Targeted technology research on the unsteady slab has been conducted. Using argon filling technology for tundish and quickly increasing casting speed technology, thew(T[O]) in the head slab decreases from 7.1×10－5 to the current 4.0×10－5. Through quickly decreaseand quickly increase casting speed cooperative control technology and seam-control technology, the quantity of large inclusions (>50 μm) in change SEN slab has reduced from 0.8 to 0.4 per square centimeter. Using “One-Button” casting speed control technology, broad-narrow width switchcontrol technology in secondary cooling and soft reduction time control technology, the center porosity in tail slab has been significantly improved.
收稿日期: 2016-05-30
出版日期: 2017-04-25
引用本文:
单庆林，贾刘兵，彭国仲，王 皓，张丙龙，王胜东. 非稳态浇铸连铸坯控制技术[J]. 中国钢铁期刊网, 2017, 36(1): 30-34.
SHAN Qing-lin，JIA Liu-bing，PENG Guo-zhong，WANG Hao，ZHANG Bing-long，WANG Sheng-dong. Control technology of slab in unsteady continuous casting process. Chinese Journal of Iron and Steel, 2017, 36(1): 30-34.
2017, Vol. 36 
