CAJ | 학술논문

简述了攀钢板坯连铸高效化生产技术及其应用效果.通过研究开发适应高拉速要求的连铸保护渣、结晶器冷却制度和钢水温度控制制度,连铸拉速达到1.30～1.80 m/min;通过应用钢包渣改性、精炼工艺优化和高粘度连铸保护渣,IF钢冷轧板卷条痕缺陷率由10.97%降至1%以内;通过合理分配两台板坯铸机功能,推广应用中包快换水口,减少LF工序钢水加热时间和提高RH连续处理能力等技术,铸机作业率由平均89.39%增至92.96%.为攀钢2008年上半年板坯产量达154万t提供了重要的技术支撑.
간술료반강판배련주고효화생산기술급기응용효과.통과연구개발괄응고랍속요구적련주보호사、결정기냉각제도화강수온도공제제도,련주랍속체도1.30～1.80 m/min;통과응용강포사개성、정련공예우화화고점도련주보호사,IF강랭알판권조흔결함솔유10.97%강지1%이내;통과합리분배량태판배주궤공능,추엄응용중포쾌환수구,감소LF공서강수가열시간화제고RH련속처리능력등기술,주궤작업솔유평균89.39%증지92.96%.위반강2008년상반년판배산량체154만t제공료중요적기술지탱.
Technologies of high efficient slab caster and its application effect at PISCO (Panzhihua Iron ＆ Steel Co. ) were presented. The casting speed was increased to the range between 1. 30 m/min and 1.80 m/min owing to developing reasonable mold flux, primary cooling scheme and molten steel temperature control. The rate of sliver defect on cold -rolled sheet was decreased from 10.97% to 1% due to adjus-ting compositions and performance of steel slag, optimizing refining process, and designing high viscosity flux. Meanwhile, the mean operating rate of slab caster was increased from 89.39% to 92.96% benefit from reasonable distributing function between two slab casters, applying quick exchanging for nozzle, re-ducing reheating time of molten steel at LF, and improving production capacity of RH. These achieve-merits have provided important technology supports for PISCO to obtain 154 million tons product of contin-uously cast slab in half a year of 2008.