精冲钢板坯表面质量控制  

Surface quality control of fine blanking steel slab

作　　者：张福君 杨树峰[1] 王勇[1,2] 黄成永 李京社 杨静波[1] ZHANG Fu-jun;YANG Shu-feng;WANG Yong;HUANG Cheng-yong;LI Jing-sheng;YANG Jing-bo(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Steelmaking Plant,Meishan Steel Company,Nanjing 210039,Jiangsu,China)

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]上海梅山钢铁有限公司炼钢厂,江苏南京210039

出　　处：《连铸》2022年第2期20-24,34,共6页Continuous Casting

基　　金：国家自然科学基金资助项目(51734003)。

摘　　要：直弧型连铸机生产精冲钢板坯表面缺陷率较高。结合实际生产工艺分析典型表面缺陷形成原因,并通过二冷配水优化、夹杂物控制、过热度控制以及连铸保护工艺优化,角部裂纹及皮下气泡缺陷率分别降至0.26%、1.11%,有效提高了连铸成材率。The surface defect rate of fine blanking steel slab produced by straight arc continuous caster is high.Combined with the actual production process,the causes of typical surface defects are analyzed.Through the optimization of secondary cooling water distribution,inclusion control,superheat control and continuous casting protection process,the defect rates of corner cracks and subcutaneous bubbles are reduced to 0.26% and 1.11% respectively,which effectively improves the yield of continuous casting.

关 键 词：精冲钢 连铸 表面质量控制 角部裂纹 皮下气泡 

分 类 号：TF777[冶金工程—钢铁冶金]