提高中厚板宽度设定精度方法的研究

来源期刊：冶金自动化2010年第5期

论文作者：李振兴 胡贤磊 刘相华

文章页码：52 - 56

关键词：中厚板； 宽度设定； 宽展； 轧制策略

Key words：plate； width setting； broadside phase； rolling mode

摘    要：分析中厚板轧制过程的工艺特点,指出不同轧制阶段的宽展对宽度设定精度都有影响。基于经典宽展公式,得到多道次轧制下的宽展系数计算模型,在该模型基础上给出纵横纵和横纵轧制策略下宽展阶段目标厚度的计算方法,并提出相应的自学习算法;指出采用纵横纵轧制策略,可以消除坯料公差对宽度设定精度造成的影响;而合理使用测宽仪和人工卡量数据,有利于提高宽度设定精度。

Abstract: In plate rolling,width spread of each rolling pass has definite bearing on the width precision of the finishing products.Based on the conventional width spread model and technological characteristics of plate rolling process,a width spread coefficient computation model dedicated to multi-pass rolling process is derived.The analysis conducted in this paper shows that rolling in 3-phase mode can effectively reduce influence of the slab size variation on the width precision of the finishing plates.A self-learning algorithm for calculating the target thickness of the broadside phase is also given in this paper to improve width control precision.