Physical Simulation on Slag Entrapment in Round Mould With EMS
WANG Chao1,2， ZHANG Hui 1,2， WANG Ming-lin1,2， MA Zhong-wei1,2， ZHAO Pei1
1. National Engineering Research Center of Continuous Casting Technology， Central Iron and Steel Research Institute，Beijing 100081， China 2. State key Laboratory of Advanced Iron and Steel Processes and Products， Central Iron and Steel Research Institute， Beijing 100081， China
Abstract：Based on the principle of Similarity, a physical model was established with 1[∶]1 ratio, taking a [?500 mm] round billet continuous casting mould in a plant as prototype and simulated mold electromagnetic stirring through mechanical stirring. Under the condition of simulated electromagnetic stirring, the model was made to study the effect of casting speed and stirring intensity on the powder covering agent. Experimental research shows that when the stirring intensity is stable, liquid level fluctuation will be increasingly intense with the increase of casting speed, and the vortex center will also be increasing; when the drawing speed is stable, with the increase of stirring speed the powder layer is volatile, and oil water interface becomes active, liquid slag thickness distribution changed from homogeneous condition to appearing of vortex center. The liquid slag layer thickness near the mold wall will be 0 when the rotational speed is more than 60 r/min, bare steel happens, and slag entrapment tends to increase. Under the condition of using electromagnetic stirring, when the casting speed is controlled under 0.45 m/min and stirring intensity between 36-48 r/min, steel slag interface will be active, conducive to slag melting and there will be no bare steel and slag entrapment will not happen.
收稿日期: 2013-10-11
出版日期: 2014-06-11
引用本文:
王 超 ， 张 慧 ， 王明林 ， 马忠伟 ， 赵 沛. 电磁搅拌下圆坯结晶器内卷渣现象的物理模拟[J]. 钢铁, 2014, 49(6): 48-52.
WANG Chao， ZHANG Hui ， WANG Ming-lin， MA Zhong-wei， ZHAO Pei. Physical Simulation on Slag Entrapment in Round Mould With EMS. Iron and Steel, 2014, 49(6): 48-52.
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Manabu I. Model Study on the Entrapment of Mold Powder Into Molten Steel[J]. ISIJ International, 2000, 40(7):685-691.[ ] 陆巧彤,杨荣光,王新华等.板坯连铸结晶器保护渣卷渣及其影响因素的研究[J].钢铁,2006,41(7):29-32.[ ] Fady M.Numerical Study of Steady Turbulent Flow Through Bifurcated Nozzles in Continuous Casting [ J]. Metallurgical and Materials Transact ions B, 1995,26(1):749-765. [ ] Toshio T. Influence of Casting Conditions on Molten Steel Flow in Continuous Casting Mold at High Speed Casting of Slabs[J] . Iron and Steel, 1993,79(5):576-582. [ ] 万晓光.连铸板坯结晶器浸入式水口试验研究[J] .钢铁,2000,35(9):20-23. [ ] 孙彦辉,韦耀环,蔡开科等.宽板坯连铸结晶器内卷渣现象试验研究[J].钢铁, 2007,42 (7): 31-33 [ ] 霍贞蓉,包燕平,岳峰等.板坯连铸结晶器边部卷渣的水模型研究[J]. 连铸,2009,(3):13-16.
2014, Vol. 49 
