摘要
研究分析连铸普钢高效化的生产工艺,得出高效化连铸面临的主要问题为漏钢、铸坯内部缺陷和脱方。采用改善点状高效结晶器和高拉速保护渣、优化二冷比配水、降低钢水过热度和拉矫机压力的措施,提高了160 mm×160 mm小方坯连铸拉速,最高拉速从3.2 m/min提高到3.7 m/min。铸坯漏钢、内部质量和脱方也得到较好的控制。
Production process of high efficiency continuous casting of general steel was studied and analyzed,and it is concluded that the main problems of high efficiency continuous casting are steel leakage,internal defects of slab and billet rhomboidity.By means of improving the spot-shaped high efficiency mould and high drawing speed protection slag,optimizing the water distribution of secondary cooling ratio,reducing the superheat of steel and the pressure of drawing straightener,the drawing speed of 160 mm×160 mm billet continuous casting was improved,and the maximum drawing speed was increased from 3.2 to 3.7 m/min.The billet steel leakage,internal quality and billet rhomboidity are also controlled at a better level.
作者
郑原首
ZHENG Yuan-shou(Steelmaking Plant,Fujian Sangang Minguang Co.,Ltd.,Sanming 365000,Fujian,China)
出处
《连铸》
2020年第3期10-13,共4页
Continuous Casting
关键词
结晶器铜管
结晶器保护渣
高拉速
低过热度
脱方
mould copper tube
mould flux
high drawing speed
low superheat
billet rhomboidity
