1250mm热连轧工作辊磨损控制策略  

Wear control strategy of work roll in 1250 mm hot continuous rolling

作　　者：王四海 翟德家 刘立辉 何海楠 李磊 徐冬[2] WANG Si-hai;ZHAI De-jia;LIU Li-hui;HE Hai-nan;LI Lei;XU Dong(Hot Rolling Department,Delong Steel Co.,Ltd.,Xingtai 054009,Hebei,China;National Engineering Research Center of Flat Rolling Equipment,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]德龙钢铁有限公司轧钢厂,河北邢台054009 [2]北京科技大学国家板带生产先进装备工程技术研究中心,北京100083

出　　处：《钢铁》2020年第9期57-63,117,共8页Iron and Steel

基　　金：国家自然科学基金资助项目(51975043,51604024);北京市自然科学基金资助项目(3182026);中央高校基本科研业务费专项资金资助项目(FRF-TP-19-002A3)。

摘　　要：国内大量的1250mm热轧机精轧机组普遍使用带有负凸度的凹形工作辊,由于轧机辊形配置及轧制工艺特点,工作辊出现严重"猫耳"型磨损,造成轧制带钢断面出现局部高点现象。为改善1250mm热连轧工作辊的磨损,提升带钢板形质量,提出了一种适用于1250mm热连轧工作辊磨损的控制策略,在保证板带稳定轧制的同时,通过轧辊辊形和工作辊窜辊策略优化来控制工作辊的磨损。本策略已应用于德龙钢铁有限公司轧钢厂,工业试验表明,该策略可减小工作辊磨损量,使轧辊磨损更加均匀,增加弯辊力调控能力,并使工作辊单位周期轧制带钢长度延长40%,对1250mm热连轧产线工作辊磨损控制具有研究价值和推广前景。Concave work rolls with negative crown are commonly used in a large number of 1250 mm hot continuous rolling production lines in China.Due to the configuration of the roll and the characteristics of the rolling process,the work rolls will suffer serious"cat ear"wear,resulting in local high points in the section of the hot-rolled strip.In order to improve the wear of 1250 mm hot rolling work roll and improve the strip profile quality,a control strategy for 1250 mm hot rolling work roll wear was proposed.While ensuring the plate and strip rolling stably,the wear of the work roll was controlled by optimizing the roll shape curve and the work roll shifting strategy.This strategy has been applied to Delong iron and steel company,the industrial test showed that this strategy can reduce the amount of work roll wear,make the roll wear more even and increase the control ability of roll bending.The work roll rolling mileage per unit cycle is extended by 40%,which has research value and promotion prospect for 1250 mm hot continuous rolling production line work roll wear control.

关 键 词：工作辊磨损 轧辊辊形 窜辊策略 弯辊力 板形质量 

分 类 号：TG333.17[金属学及工艺—金属压力加工]