中厚板轧机高精度厚度自动控制系统的开发及应用

来源期刊：冶金自动化2011年第3期

论文作者：陈跃华

文章页码：35 - 40

关键词：中厚板轧机； 自动厚度控制； X射线测厚仪； 油膜补偿； 宽度补偿

Key words：medium plate rolling mill； automatic gauge control； X-ray thickness gauge monitor； oil film thickness compensation； width compensation

摘    要：为了同时满足同板差和异板差的指标要求,天津天铁冶金集团有限公司轧钢厂中厚板轧机自动厚度控制系统(AGC)分别采用了相对方式AGC和绝对方式AGC,其中,相对方式AGC能有效提高同板差精度,绝对方式AGC则可以保证轧出钢板的厚度与目标厚度基本一致。为此建立了钢板的高精度厚度计式模型,采用X射线测厚仪检测参数和各种补偿算法对计算模型进行修正。这种高精度的AGC系统投入使用后运行稳定,厚度精度取得了满意效果。

Abstract: Automatic Gauge Control(AGC) system of Tianjin Tiantie Steel 2 500 mm plate mill is introduced.Two kinds of AGC methods,namely relative AGC and absolute AGC,are used to meet the requirements of control performance.The relative AGC can reduce the thickness difference along the length of a plate,and the absolute AGC can ensure thickness of the plate as rolled approaching target thickness.For this reason,we develop a model which can calculate thickness for plate rolling,and an X-ray thickness gauge monitor and several compensation algorithms are used to compensate model error.This AGC system as designed works steadily in Tiantie 2 500 mm plate mill,and it is proved that thickness precision of plate products is high.