连铸坯振痕形成机理及电磁控制技术*金小礼，雷作胜，任忠鸣，邓康，钟云波(上海大学，上海市钢铁冶金新技术应用开发重点实验室,上海200072)摘要综述了连铸中振痕形成机理及其控制技术，提出了一种新的振痕形成机理，认为连铸过程中结晶器振动导致初始凝固坯壳的“温度波动”是铸坯表面振痕形成的一个重要原因。为减轻振痕，改善连铸坯表面质量，提出了两种电磁连铸新技术：调幅磁场耦合结晶器振动的电磁连铸技术和调幅磁场下无结晶器振动的电磁连铸技术。关键词电磁连铸振痕温度波动高频调幅磁场MechanismofOscillationMarkFormationandDevelopmentofElectromagneticControlTechnologyforContinuousCastingStrandJINXiaoli,LEIZuosheng,RENZhongming,DENGKang,ZHONGYunboShanghaiUniversity,ShanghaiEnhancedLaboratoryofFerro-Metallurgy,Shanghai200072,ChinaAbstractTheoscillationmarksformationmechanismsanditscontroltechnologiesincontinuouscastingareoverviewed.Specially,anewmechanismwasintroducedinwhichthetemperaturefluctuationofearlysolidifiedshellcausedbymouldreciprocationisakeyfactor.Inordertodecreasethedepthofoscillationmarks,andimprovethesur..