Q195矩形坯保护渣优化研究  

Study on optimization of protection slag for Q195 rectangular billet

作　　者：段少平 周详 Duan Shaoping;Zhou Xiang(Shaanxi Steel Group Hanzhong Iron and Steel Co.,Ltd.,Hanzhong 724200,China)

机构地区：[1]陕钢集团汉中钢铁有限责任公司炼钢厂,陕西汉中724200 [2]陕钢集团汉中钢铁有限责任公司炼钢厂生产技术室

出　　处：《金属制品》2022年第3期35-38,共4页Metal Products

摘　　要：针对Q195矩形坯角裂漏钢、侧面凹陷和拉速低等问题,通过优化保护渣熔点、黏度、碱度等理化指标,控制一次冷却过程中初生坯壳和铜壁之间的气隙,改善传热,提高连铸坯润滑效果,为高拉速生产创造基础条件。连铸坯拉速由1.0~1.2 m/min提高至1.5~1.7 m/min;角裂漏钢和侧面凹陷问题得到较大控制,角部漏钢率降低91.42%,侧面凹陷比率降低90%。In order to solve problem of corner crack breakout,side depression and low drawing speed of Q195 rectangular billet,the air gap between primary billet shell and copper wall during primary cooling is controlled and heat transfer is improved by optimizing physical and chemical indexes such as melting point,viscosity,alkalinity,etc.,to improve lubrication effect of continuous casting billet and create basic conditions for high casting speed production.The casting speed increases from 1.0~1.2 m/min to 1.5~1.7 m/min,corner crack breakout and side depression are greatly controlled,corner breakout rate is increased 91.42%,side depression rate is increased 90%.

关 键 词：Q195 漏钢 矩形坯 保护渣 

分 类 号：TF777.1[冶金工程—钢铁冶金]