连铸板坯角部横裂纹产生原因与控制

摘要

The causes leading to the transverse corner cracks of continuous casting slabs are summarized. The effect of such factors as compositions in molten steel, mould control and proper-ties of casting powders on the transverse corner cracks are analyzed and thus the countermeasures for these cracks are proposed, including the adjustment of compositions in molten steel, optimiza-tion of the control for mould and optimization of the secondary cooling schedule and properties of casting powders.%综述了连铸板坯角部横裂纹的形成原因，分析了钢水成分、结晶器控制、保护渣性能等对角部横裂纹的影响，并提出了调整钢水成分、优化结晶器控制、优化二冷制度和保护渣性能等控制角部横裂纹产生的改进措施。