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基于以跟踪单元建立起的在线凝固模型的以坯龄建立起的二冷模型,根据生产现场工艺条件,有利于制定出合理的二冷制度,控制合理的铸坯表面温度、凝固末端的液相穴的形状及深度,为进行凝固末端轻压下创造条件,最终改善铸坯表面质量及内部质量。该系统优化之后杜绝了表面纵裂及横裂,中心疏松及偏析明显改善,消除了内部裂纹。
Based on the secondary cooling model established by the billet age established by the on-line solidification model of the tracking unit, it is helpful to formulate a reasonable secondary cooling system according to the process conditions at the production site to control the surface temperature of the slab and solidify the liquid phase The shape and depth of the pits create the conditions for light pressure at the end of the solidification and ultimately improve the surface quality and internal quality of the slab. After the optimization of the system to eliminate the surface longitudinal cracks and transverse cracks, loose center and segregation significantly improved, eliminating the internal cracks.