PROFILE AND FLATNESS CONTROL SYSTEM IN 1700mm HOT STRIP MILLS OF ANSTEEL  

作　　者：HE Anrui YANG Quan CHEN Xianlin ZHAO Lin 

机构地区：[1]National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China [2]Hot Strip Plant,Anshan Iron ＆ Steel Group Company, Anshan 114021, China

出　　处：《Chinese Journal of Mechanical Engineering》2008年第3期103-107,共5页中国机械工程学报（英文版）

基　　金：National Key Scientific Technological Project of the Ninth Five-year of China(No.97-316-01-01)

摘　　要：Varying contact-length backup roll and linearly variable crown work roll are provided for improving the mill performance of profile and flatness control. Integrated with theses technologies, relevant profile and flatness control models are developed for hot strip mills on the basis of large amount of finite element calculation. These models include shape setup control model in process control system, bending force feedforward control model, crown feedback control model and flatness feedback control model in basis automation system. Such a profile and flatness control system with full functions is applied in 1 700 mm industrial hot strip mills of Ansteel. Large amount of production data shows that the crown precision with the tolerance of±18 μm is over 90%, the strip percentage which the actual flatness is within ±25 I-unit surpasses 96%, and general roll consume is reduced by 28% by using the profile and fiatness control system. In addition, schedule-free rolling is realized.Varying contact-length backup roll and linearly variable crown work roll are provided for improving the mill performance of profile and flatness control. Integrated with theses technologies, relevant profile and flatness control models are developed for hot strip mills on the basis of large amount of finite element calculation. These models include shape setup control model in process control system, bending force feedforward control model, crown feedback control model and flatness feedback control model in basis automation system. Such a profile and flatness control system with full functions is applied in 1 700 mm industrial hot strip mills of Ansteel. Large amount of production data shows that the crown precision with the tolerance of±18 μm is over 90%, the strip percentage which the actual flatness is within ±25 I-unit surpasses 96%, and general roll consume is reduced by 28% by using the profile and fiatness control system. In addition, schedule-free rolling is realized.

关 键 词：Hot strip mills Profile and flamess control Roll contour Schedule-free rolling 

分 类 号：TH133.33[机械工程—机械制造及自动化]