板坯结晶器电磁制动和吹氩过程的钢/渣界面行为
THE INTERFACIAL BEHAVIOR OF MOLTEN STEEL AND LIQUID SLAG IN SLAB CONTINUOUS CASTING MOLD WITH ELECTROMAGNETIC BRAKE AND ARGON GAS INJECTION
查看参考文献14篇
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文摘
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利用数值模拟方法研究了板坯结晶器电磁制动和吹氩耦合作用下吹氩量、拉速和线圈电流强度等不同工艺参数对钢/渣界面行为的影响规律,分析了结晶器内液面波动指数F与液面波动间的关系.研究表明,在一定拉速和电磁制动条件下,吹氩量增加会加剧钢/渣界面的局部波动,F值随吹氩量增加而增大,弯月面处的液渣厚度与F值呈线性递增关系;在一定吹氩量和电磁制动条件下,拉速增加并没有恶化水口附近的钢/渣界面波动,而使F值增大,弯月面处的液渣厚度与F值呈线性递减关系;在一定拉速和吹氩量条件下,增加线圈电流强度会加剧水口附近的钢/渣界面波动. |
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其他语种文摘
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A numerical simulation was used in describing the interracial behavior between molten steel and liquid slag layer with different flow-control technologies in the slab continuous casting mold, in which the effects of argon gas flow rate, casting speed and current intensity of coils on the interracial behavior of molten steel and liquid slag with the coupling action of electromagnetic brake （EMBr） and argon gas injection were considered. The relationship between the level fluctuation index of F value and level fluctuation of free surface was also investigated. For a given casting speed with EMBr, increasing the argon gas flow rate can aggravate the local fluctuation of interface so much as lead to the breakup of the steel slag interface, F value increases with increasing argon gas flow rate and the thickness of liquid slag near the meniscus increases linearly with F value. For a given argon gas flow rate with EMBr, increasing the casting speed has helpful for restraining the interfacial fluctuation near the nozzle, and F value also increasing, the thickness of liquid slag near the meniscus reduces linearly with F value. On the contrary, for a certain casting speed and argon gas flow rate, increasing the current intensity of coils can aggravate the steel/slag interfacial fluctuation near the nozzle. |
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来源
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金属学报
,2008,44(9):1141-1148 【核心库】
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关键词
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板坯结晶器
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电磁制动
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吹氩
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钢/渣界面
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数值模拟
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地址
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东北大学材料与冶金学院, 辽宁, 沈阳, 110004
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0412-1961 |
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学科
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冶金工业 |
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基金
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国家自然科学基金
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国家教育部新世纪优秀人才支持计划
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宝钢集团公司项目50674020
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文献收藏号
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CSCD:3394808
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