摘要
针对保温罩投入使用后精轧区域中间坯头尾温差扩大以及带钢氧化铁皮缺陷增多等问题进行了分析。结果表明,保温罩投入使用后,中间坯温度升高,精轧机需要通过降低轧制速度来命中终轧温度,导致精轧轧制时间延长,是造成上述问题的主要原因。借助有限元模拟中间坯温度变化情况,根据模拟结果优化加热工艺,解决了上述问题,同时实现了节能降耗,提升了精轧轧制稳定性。
The expanded temperature difference on the head and tail of intermediate billet at finish rolling area and the increased scale defect for finished strips were analyzed after the installation of heat preservation cover.The results showed that the main reason for those problems was the temperature of the intermediate billet increased after the installation of heat preservation cover,and the finishing mill needed to reduce the rolling speed to hit the final rolling temperature,which leaded to the extension of finishing rolling time.Temperature variations were analyzed by means of FEM simulation.On the basis of the simulation result,the heating process was optimized,and the problem was solved.Apart from energy saving and cost reducing,the finish rolling stability was improved.
作者
丁美良
杨丽琴
孙林
曲锦波
DING Mei-liang;YANG Li-qin;SUN Lin;QU Jin-bo(Institute of Research of Iron and Steel,Sha-steel,Zhangjiagang 215625,Jiangsu,China)
出处
《中国冶金》
CAS
北大核心
2021年第9期149-153,共5页
China Metallurgy
关键词
保温罩
中间坯
加热工艺
轧制时间
氧化铁皮
温差
heat preservation cover
intermediate billet
heating process
rolling time
scale defect
temperature difference
