Abstract：By establishing two-dimensional transient heat transfer and solidification model for continuous casting of 160 mm×160 mm square billet QD08, the slab temperature and slab solidification rate at each roll position were calculated, and the effects of reduction and position on the macrostructure quality of billet longitudinal section were studied. The results indicated, compared with the central solid rate, low carbon steel is more suitable for characterizing the soft reduction position and adjusting the reduction process with solidification rate. The billet central quality was best reduced in 0.961-1.000 solidification range. Shrinkage cavity existed in the center of the billet reduced in 0.986-1.000 solidification range.Certer cracks existed when soft reduction was carried out in 0.931-0.961 solidification range. Cracks occuried more eassily at high casting speed under the same reduction proccess. Less reduction quantity significantly decreased the center cracks.
李大明, 林俊, 贺佳佳, 邓向阳, 吴炜, 庞卓纯. 低碳钢连铸轻压下工艺的技术研发和应用[J]. 连铸, 2023, 42(2): 52-56.
LI Da-ming, LIN Jun, HE Jia-jia, DENG Xiang-yang, WU Wei, PANG Zhuo-chun. Development practice of the soft reduction process in mild steel con-casting. CONTINUOUS CASTING, 2023, 42(2): 52-56.
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2023, Vol. 42 
