板坯连铸结晶器内夹杂物去除的水模实验研究.pdf

1 No. 1 2009 2 Continuous Casting February 2009 倪 冰, 罗志国, 狄瞻霞, 韩立浩, 邹宗树 (, 110004) : 3 :, ; , , , , : ; ; ; : TF777. 1 : A : 1005 4006(2009) 01 0001 05 Experimental Study on Inclusion Removal in Slab Continuous Casting Mold by Water Modeling N I Bing, LUO Zhi guo, DI Zhan xia, HAN Li hao, ZOU Zong shu ( School of Materials and M et allurgy, Northeast ern University, Shenyang 110004, Liaoning, China) Abstract: Inclusion removal w ith three kinds of diameter was simulated by using different liquid flow rate, gas flow rate, and purging plug type in water model. The results show that the inclusion removal efficiency decreases rapidly as the w ater flow rate increases to a critical value, w hile it intends to slow as the w ater flow rate continues to en large. The removal efficiency increases not much with gas blow ing than that wit hout gas blowing. Moreover, as the gas flow rate enlarges, there is a modest increase of the removal efficiency due to three fact ors including the proba bility of inclusions attachment to the bubbles, the bubbles region dist ribution and their quant ities distribution. Key words: w ater modeling of mold; inclusion; bubble; removal , , dB, dI , dP , m; d0 , 36 mm; P ; [ 1, 2] P C ;