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| 1 | Effect of continuous casting speed on mold surface flow and the related near-surface distribution of non-metallic inclusions显示文摘For the control of surface defects in interstitial-free(IF) steel, quantitative metallographic analyses of near-surface inclusions and surface liquid flow detection via the nail-board tipping method were conducted. The results show that, at casting speeds of 0.8 and 1.0 m/min, a thin liquid mold flux layer forms and non-uniform floating of argon bubbles occurs, inducing the entrainment and subsequent entrapment of the liquid flux; fine inclusion particles of Al_2O_3 can also aggregate at the solidification front. At higher casting speeds of 1.4 and 1.6 m/min, the liquid mold flux can be entrained and carried deeper into the liquid steel pool because of strong level fluctuations of the liquid steel and the flux. The optimal casting speed is approximately 1.2 m/min, with the most favorable surface flow status and, correspondingly, the lowest number of inclusions near the slab surface. | Peng Fei Yi Min Cheng-jun Liu Mao-fa Jiang | 2019 | International Journal of Minerals,Metallurgy and Materials2019，26，2： | 6 |
| 2 | 板坯连铸结晶器内渣/金界面非稳态波动行为显示文摘采用VOF法对板坯连铸结晶器内渣/金界面的非稳态波动行为进行研究,使用几何重建方案模拟连铸结晶器内渣/金界面的运动形态.分析了拉速、水口插入深度和倾角对连铸结晶器内渣/金界面波动的影响.结果表明,在浇注初期,渣/金界面的波动幅度较小;随着时间的发展,渣/金界面的波动幅度不断增大;达到动态稳定后水口附近的渣/金界面会出现不规则的锯齿状波动.漩涡的不稳定性是造成渣/金界面锯齿状波动的原因.随着拉速的增大,渣/金界面波动加剧;随着水口插入深度和倾角增大,渣/金界面波动减弱. | 刘中秋 齐凤升 李宝宽 姜茂发 | 2014 | 东北大学学报(自然科学版)2014，35，12： | 4 |
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