材料与冶金学报2025，Vol.24Issue(4)：340-348,9.DOI:10.14186/j.cnki.1671-6620.2025.04.004
板坯倒角结晶器窄面锥度优化
Optimization of narrow face taper of slab chamfered mold
摘要
Abstract
For guaranteeing high quality production of chamfered slab continuous casting,based on the practical continuous casting production of a steel plant,a thermo-mechanical model of shell solidification in a chamfered mold,considering the dynamic distributions of mold flux film and air gap,was developed to explore the solidification heat transfer behavior.The results show that when the narrow face taper of the mold for continuous casting production peritectic steel is 1.1％,the corner and chamfered face area of the slab are prone to concentrate on the distributions of thick mold flux film and air gap due to the shrinkage of the shell,resulting in the off-corner of the wide face and the center area of the chamfered face to produce hot spots.When the taper increases to 1.3％,the thickness of the mold flux film and air gap in the wide and narrow face off-corners of the shell and in the chamfered face area decreases,the uniformity of the solidified shell is improved,and the stable production with a maximum casting speed of 1.5 m/min and the transverse crack rate of ≤0.31％at the ingot corner is achieved.关键词
倒角结晶器/锥度/保护渣膜/气隙Key words
chamfered mold/taper/mold flux film/air gap分类
矿业与冶金引用本文复制引用
罗家志,江中块,姜嵇银..板坯倒角结晶器窄面锥度优化[J].材料与冶金学报,2025,24(4):340-348,9.基金项目
国家重点研发资助项目(2021YFB3702001). （2021YFB3702001）
