中薄板坯角部纵向边裂的原因与措施  

Causes Leading to Longitudinal Edge Cracks at Corner of Medium and Thin Slabs and Countermeasures for the Cracks

作　　者：张凤心[1] 杨轶龙[1] 张勇[1] 祁林[1] 赵雷[1] 王忠鹏[1] ZHANG Fengxin;YANG Yilong;ZHANG Yong;QI Lin;ZHAO Lei;WANG Zhongpeng(General Steelmaking Plant of Angang Steel Co.,Ltd.,Anshan 114021,Liaoning,China)

机构地区：[1]鞍钢股份有限公司炼钢总厂,辽宁鞍山114021

出　　处：《鞍钢技术》2023年第1期63-67,共5页Angang Technology

摘　　要：分析了中薄板坯角部纵向边裂的影响因素,采取优化结晶器振动台控制系统和同步精度,优化结晶器锥度,提高结晶器整备精度,适当减小结晶器冷却水量,提高扇形段辊缝和接弧精度标准等措施后,中薄板坯角部纵向边裂发生率由3.5%降至1.0%,保证了中薄板坯产品的质量。After analyzing the causes leading to the longitudinal edge cracks at the corner of medium and thin slabs,such measures as optimizing the control system and synchronization accuracy of the crystallizer vibration table,optimizing the crystallizer taper,improving the stood-by accuracy of the crystallizer,appropriately reducing the cooling water volume for crystallizer,and improving the standards for roll gaps and arc connection accuracy in terms of the sector segment were taken,the occurrence rate of longitudinal edge cracks was decreased to 1.0%from 3.5%,which ensured the quality of medium and thin slabs.

关 键 词：中薄板坯 角部纵向边裂 结晶器 振幅 锥度 冷却水量 

分 类 号：TF777[冶金工程—钢铁冶金]