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首页> 外文期刊>ISIJ international >Simulation of Microstructure and Behavior of Interfacial Mold Slag Layers in Continuous Casting of Steel
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Simulation of Microstructure and Behavior of Interfacial Mold Slag Layers in Continuous Casting of Steel

机译：钢连铸过程中界面结晶器渣层的组织和行为模拟

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摘要

A computational model of heat transfer, solidification and interface behavior during the continuous casting of steel is applied to interpret the crystallization behavior of slag layers in the interfacial gap between the mold and the steel shell. A mechanism for the formation of this crystalline layer is proposed that combines the effects of a shift in the viscosity curve, a decrease in the liquid slag conductivity due to partial crystallization, and an increase in the solid slag layer roughness corresponding to a decrease in solid layer surface temperature with distance down the mold. When the shear stress exceeds the slag shear strength before the axial stress accumulates to the fracture strength, the slag could shear longitudinally inside the layers. The predictions are consistent with measurements conducted in the real process and with the microstructure of analyzed slag samples.
机译：利用钢的连续铸造过程中的传热，凝固和界面行为的计算模型来解释在铸型和钢壳之间的界面间隙中的渣层的结晶行为。提出了形成该结晶层的机理，该机理结合了粘度曲线的偏移，由于部分结晶而导致的液体炉渣电导率的降低，以及与固体含量的降低相对应的固体炉渣层粗糙度的增加的影响。层表面温度随模具向下的距离而变化。当在轴向应力累积到断裂强度之前，剪应力超过炉渣的剪切强度时，炉渣会在各层内部纵向剪切。该预测与实际过程中进行的测量以及所分析的炉渣样品的微观结构一致。

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