中板轧制过程翘头影响因素模拟分析
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摘要
针对中板轧制过程出现的翘头问题,分析研究了辊速差、辊径差、摩擦因数、轧件上下表面温差以及轧制线高度对翘头的影响规律,将出炉坯料上下表面温差控制在25℃以内,粗、精轧轧制线高度分别设置为-2 mm和+4～+6 mm,可有效地改善轧件翘头问题,提高生产效益。
In view of the head warping problem during medium plate rolling process,the influences of the roll speed difference,the roll diameter difference,the friction coefficient,the temperature difference between the upper and lower surfaces of the rolled piece and the height of the rolling line on the head warping were analyzed.The temperature difference was controlled within 25 ℃,and the heights of the roughing and finishing rolling lines were set to -2 mm and +4～+6 mm respectively,which could effectively improve the head warping problem of the rolled piece and improve the production efficiency.
In view of the head warping problem during medium plate rolling process,the influences of the roll speed difference,the roll diameter difference,the friction coefficient,the temperature difference between the upper and lower surfaces of the rolled piece and the height of the rolling line on the head warping were analyzed.The temperature difference was controlled within 25 ℃,and the heights of the roughing and finishing rolling lines were set to -2 mm and +4～+6 mm respectively,which could effectively improve the head warping problem of the rolled piece and improve the production efficiency.
引文
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[2] Knight C W,Hardy S J,Lees A W,et al.Investigations into the influence of asymmetric factors and rolling parameters on strip curvature during hot rolling[J].Journal of Materials Processing Technology,2003,134(2):180.
[3] 何安瑞,邵健,孙文权.板形控制理论与实践[M].北京:冶金工业出版社,2016.
[4] 程晓茹,胡衍生,李虎兴,等.中厚板头部弯曲预报模型[J].轧钢,2001,11(6):9.
[5] 唐运章.炉卷轧机钢板头部翘曲问题分析和控制[J].轧钢,2011,21(2):58.
[6] 田勇,王国栋,赵忠,等.中厚板轧制过程头部弯曲成因分析及其控制[J].东北大学学报:自然科学版,2007,28(11):19.
[7] 王伏生.热连轧窄带钢带坯头部上翘下弯的预防措施[J].轧钢,2001,11(6):59.
[8] 刘泽田,董瑞峰,高军,等.中厚板轧制过程中头部弯曲原因及其控制[J].金属材料与冶金工程,2013,41(4):11.
[9] 王飞龙,刘勇,李卫平,等.热轧粗轧扣翘头问题的仿真分析[J].钢铁,2010,45(4):46.
[10] 李亮,杜凤山,郭振宇,等.非对称板带热轧头部翘曲的分析与有限元模拟[J].冶金设备,2003( 2):4.
[11] 陈火红.Marc有限元实例分析教程[M].北京:机械工业出版社,2002.