高拉速非正弦振动连铸结晶器内振痕的形成机理研究孟祥宁朱苗勇江中块冷祥贵程乃良(东北大学材料与冶金学院,沈阳110004)（上海梅山钢铁股份有限公司炼钢厂，南京210039）摘要:通过分析振动周期内弯月面初凝坯壳的受力，阐述了连铸板坯表面振痕形成过程，解释了关于振痕生成位置的“附加液体容积”模型。结果表明：弯月面初凝坯壳在钢水静压力、摩擦力和保护渣渣道压力作用下随凝固进程形成振痕，振痕生成位置主要取决于初凝坯壳固液混合区的固相分率。关键词:连铸结晶器，非正弦振动，高拉速，振痕形成MechanismoftheFormationofOscillationMarksinSlabContinuousCastingMoldwithNon-sinusoidalOscillationandHighCastingSpeedMENGXiangning,ZHUMiaoyong,JIANGZhongkuai1),LENGXianggui1),CHENGNailiang1)SchoolofMaterialsandMetallurgy，NortheasternUniversity，Shenyang1100041)SteelmakingPlant,ShanghaiMeishanIronandSteelCo.,Ltd,Nanjing210039AbstractOscillationmarksformationforslabcontinuouscastingwasexpatiatedthroughstressanalysesofinitialsolidifyingmeniscusshellduringanoscillationcycle,andthe“ExtraLiquidVolume”modelaboutpositionofoscillationma..