摘要
建立了25MnSiV矩形连铸坯凝固组织数学模型,研究了拉速、过热度、二冷区给水量对连铸坯表面温度及中心温度的影响规律,并基于铸坯内部疏松缩孔的产生机理,得出结论,当拉速为1.0 m/min,过热度为20℃,二冷区给水量为最大给水量时,铸坯表面温度和中心温度对铸坯质量的影响最小。
The mathematical model for solidification microstructures in the 25MnSiV rectangular continuous casting blank was established. Then the rules of effect in terms of casting speed,degree of superheat and water supply in secondary cooling zone on the surface temperature and center temperature of a continuous casting blank were studied. And based on the generation mechanism of the porosity and shrinkage cavity inside the blank, it was concluded that when the casting speed was 1.0 m/min, degree of superheat was 20 ℃ and the quantity of water supply in secondary cooling zone was maximum value, the effect of the surface temperature and the center temperature on the quality of the blank was least.
作者
李海强
赵雷
徐晓林
王福星
李胜利
LI Haiqiang;ZHAO Lei;XU Xiaolin;WANG Fuxing;LI Shengli(Ansteel Foundry Co.,Ltd.,Anshan 114021,Liaoning,China;Material and Metallurgical School,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China)
出处
《鞍钢技术》
CAS
2022年第5期24-29,34,共7页
Angang Technology
基金
“十四五”国家重点研发计划(2021YFB3702005)
极端环境海洋工程装备用钢关键技术及示范应用(2020JH1/10100001)。
关键词
矩形连铸坯
表面温度
中心温度
拉速
过热度
二冷区给水量
rectangular continuous casting blank
surface temperature
center temperature
casting speed
degree of superheat
water supply flow in secondary cooling zone
