25MnSiV矩形连铸坯疏松缩孔模拟研究葛春钰1，朱晓雷2,3，裴兰科1，廖相巍2,3，艾新港4（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）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1.0m/min、过热度20℃、二冷区给水量为最大给水量的60%。关键词：矩形连铸坯；疏松缩孔；拉速；过热度；二冷区给水量中图分类号：TF777文献标识码：A文章编号：1006-4613（2023）01-0017-06DOI：10.3969/j.issn.1006-4613.2023.01.004SimulationStudyonPorosityandShrinkageCavityin25MnSiVRectangularContinuousCastingBlankGEChunyu1，ZHUXiaolei2,3，PEILanke1，LIAOXiangwei2,3，AIXingang4（1.AnsteelFoundryCo.，Ltd.，Anshan114021，Liaoning，China；2.StateKeyLaboratoryofMetalMaterialforMarineEquipmentandApplication,Anshan114009，Liaoning，China；3.AnsteelIron&SteelResearchInstitutes，Anshan114009，Liaoning，China；4.MaterialandMetallurgicalSchool，UniversityofScienceandTechnologyLiaoning，Anshan114051，Liaoning，China）Abstract：Themathematicalmodelforsolidificationmicrostructuresofthe25MnSiVrectan-gularcontinuouscastingblankwasestablished.Andbasedonthemodeltheinfluencerulesintermsofsuchfactorsascastingspeed,degreeofsuperheatandwatersupplyinsecondarycoolingzoneontheporosityandshrinkagecavityinacontinuouscastingblankwerestudied.Thestudyresultsshowedthatincreasingthecastingspeedanddegreeofsuperheatcouldraisetheratioofporosityandshrinkagecavity,whileincreasingthequantityofwatersupplyinsecondarycoolingzonecouldreducetheratioofporosityandshrinkagecavity.Sothebestparameterswereobtainedthatthecastingspeedwas1.0m/min,degreeofsuperheatwas20℃andthequantityofwatersupplyinsecondarycoolingzonewas60%ofmaximumquantityofwatersupply.Keywords：rectangularcontinuouscastingblank;porosityandshrinkagecavity;castingspeed;degreeofsuperh...
