ESP长公里数轧制技术的研究与实践

Research and practice of ESP long kilometer rolling technology

为提升ESP产线长公里数轧制带钢板形的稳定性,以及解决带钢起筋和中后期严重浪形等质量问题,通过对连铸拉速、铸坯断面温差、轧辊辊形、轧辊磨损模型、轧辊轴向横移匹配、轧线关键工艺和温度控制等影响连浇公里数因素进行大量的现场跟踪测试以及数据分析和研究,形成了开浇拉速提升制度、铸坯断面温差控制策略、轧线工艺和热履历控制、辊形设计、负荷分配优化、轧辊磨损和轧辊轴向横移系数调整等一整套ESP长公里数轧制技术方案,成功实现了ESP无头轧制生产线单浇次200 km的超长公里数连续轧制,极大地提升了轧机作业率和成材率,有效降低了轧制成本,经济效益显著。

In order to improve the stability of the strip shape in the rolling with long kilometers of ESP production line,and solve the quality problems such as ribbing of coils and serious wave shape in the middle and late period,a large number of field tracking tests,data analysis and research were carried out on the factors affecting the continuous casting kilometers,such as the drawing speed of continuous casting,the temperature difference of the slab section,the roll shape,the wear model,the matching of axial and transverse movement of rolls,the key process of the rolling line and the temperature control.A complete set of ESP long kilometer rolling technical scheme was formed,such as casting speed increase system,temperature difference control strategy of casting slab section,rolling process and thermal history control,roll shape design,load distribution optimization,wear and roll shifting coefficient adjustment,etc.,and the ESP headless rolling production line was successfully realized with a single pouring time of 2oo km long continuous rolling.The operation rate and yield rate of the mill are greatly improved,the rolling cost is effectively reduced,and the economic benefits are remarkable.