Effect of Submerged Entry Nozzle Argon Blowing on Slab Quality
Effect of Submerged Entry Nozzle Argon Blowing on Slab Quality
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DOI：
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发表时间：
2009
影响因子：
2.1
通讯作者：
Jiang Zhong-kuai
中科院分区：
文献类型：
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作者：
Jiang Zhong-kuai
通过模拟和实验研究了浸入式喷嘴吹氩对板坯质量的影响。研究了板坯在稳态和非稳态浇筑条件下的物理模拟和组织间质量。采用了水模拟、板坯宏观结构试验和金相检验等方法。根据分析结果，应根据防止SEN堵塞的结果来判断吹氩的影响，否则应根据模具表面波动或气泡注射深度来判断。提出了提高吹气质量的一些建议和标准。在较高的铸速条件或较小的铸坯尺寸下，可采用较少的气体体积。通过优化吹氩速率和吹氩方式，可以减少板坯针孔或铅笔管缺陷。
Effect of Submerged Entry Nozzle(SEN)argon blowing on slab quality has been investigated stimulatingly and experimentally.The physical simulation and inter structure quality of slab samples under steady and unsteady casting conditions have been examined.The water modeling,slab macro structure test and metallographical examination have been used.Based on the results analyzed,the argon blowing influence should be judged by the result of preventing SEN clogging otherwise the mould surface fluctuation or bubbles injection depth.Some advice and standard on blowing gas selection for improvement the quality are given and discussed.The less gas volume may be used while the higher casting velocity conditions or smaller slab size.The slab pinhole or pencil pipe defect can be reduced by optimization argon blowing rate and style.