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连铸板坯中心内裂与凝固末期液心被周期性封闭后形成的缩孔有关。连铸异型坯腹板中心内裂与拉速不适应于腹板支撑长度而产生的鼓肚有关。
Continuous casting slab center crack and liquid phase at the end of the solidification was closed after the formation of shrinkage-related. Continuous casting anterograde billet center crack and pull speed does not adapt to the length of the web support caused by bulging.