高径比及锥度对60 t钢锭质量影响的数值模拟  

Numerical simulation on influences of aspect ratio and taper on quality of 60 t ingots

作　　者：张倍恺 艾新港[1] 曾洪波 ZHANG Beikai;AI Xingang;ZENG Hongbo(School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,China)

机构地区：[1]辽宁科技大学材料与冶金学院

出　　处：《辽宁科技大学学报》2019年第2期81-84,共4页Journal of University of Science and Technology Liaoning

基　　金：十三五国家重点研发计划重大专项(2017YFB0304201);国家自然科学基金(51774179);辽宁省教育厅创新团队项目(LT2016003)

摘　　要：高径比及锥度对钢锭凝固过程中的疏松、缩孔等缺陷有一定影响。本文建立了60 t钢锭凝固过程的数学模型,研究高径比及锥度对钢锭组织结构和内部缺陷的影响,确定钢锭缩孔缺陷和凝固速度随高径比及锥度的变化规律。综合考虑凝固速度、钢锭质量以及实际生产因素,60 t钢锭的高径比为2.0,锥度为3%比较适宜。Aspect ratio and taper have certain influences on the defects such as porosity and shrinkage,etc., during solidification of steel ingots. In this work,a mathematical model for simulating the solidification process of a 60 t ingot has been established. Influences of aspect ratio and taper on the structure and internal defects of the ingot are studied,and the variation rule of ingot shrinkage defect and solidification speed with the aspect ratio and taper has been determined. By comprehensively considering such factors as solidification speed,ingot quality and practical production situation,it is recommended that the aspect ratio of 2.0 and the taper of 3% are more appropriate for production of 60 t ingots.

关 键 词：扁钢锭 高径比 锥度 数值模拟 疏松 缩孔 

分 类 号：TF701[冶金工程—钢铁冶金]