25MnSiV矩形连铸坯疏松缩孔模拟研究  

Simulation Study on Porosity and Shrinkage Cavity in 25MnSiV Rectangular Continuous Casting Blank

作　　者：葛春钰 朱晓雷 裴兰科 廖相巍 艾新港[4] GE Chunyu;ZHU Xiaolei;PEI Lanke;LIAO Xiangwei;AI Xingang(Ansteel Foundry Co.,Ltd.,Anshan 114021,Liaoning,China;State Key Laboratory of Metal Material for Marine Equipment and Application,Anshan 114009,Liaoning,China;AnsteelIron&Steel Research Institutes,Anshan 114009,Liaoning,China;Material and MetallurgicalSchool,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China)

机构地区：[1]鞍钢铸钢有限公司,辽宁鞍山114021 [2]海洋装备用金属材料及其应用国家重点实验室,辽宁鞍山114009 [3]鞍钢集团钢铁研究院,辽宁鞍山114009 [4]辽宁科技大学材料与冶金学院,辽宁鞍山114051

出　　处：《鞍钢技术》2023年第1期17-22,共6页Angang Technology

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疏松缩孔的影响规律。结果表明,提高拉速和过热度均会增加铸坯疏松缩孔比例,而增加二冷区给水量能降低铸坯疏松缩孔比例,最佳工艺参数分别为拉速1.0 m/min、过热度20℃、二冷区给水量为最大给水量的60%。The mathematical model for solidification microstructures of the 25MnSiV rectangular continuous casting blank was established.And based on the model the influence rules in terms of such factors as casting speed,degree of superheat and water supply in secondary cooling zone on the porosity and shrinkage cavity in a continuous casting blank were studied.The study results showed that increasing the casting speed and degree of superheat could raise the ratio of porosity and shrinkage cavity,while increasing the quantity of water supply in secondary cooling zone could reduce the ratio of porosity and shrinkage cavity.So the best parameters were obtained that the casting speed was 1.0 m/min,degree of superheat was 20℃and the quantity of water supply in secondary cooling zone was 60%of maximum quantity of water supply.

关 键 词：矩形连铸坯 疏松缩孔 拉速 过热度 二冷区给水量 

分 类 号：TF777[冶金工程—钢铁冶金]