高强度低合金钢热轧板形综合控制技术  

Comprehensive Shape Control Technologies of High Strength Low-Alloy Steel in Hot Strip Mills

作　　者：陈超超[1] 何安瑞[1] 邵健[1] 刘建华 周杰 

机构地区：[1]北京科技大学高效轧制国家工程研究中心,北京100083 [2]湖南华菱钢铁股份有限公司2250热轧板厂,湖南娄底417009

出　　处：《钢铁》2014年第4期47-53,共7页Iron and Steel

基　　金：新世纪优秀人才支持计划资助项目(NCET-10-0223);中央高校基本科研业务费专项基金资助项目(FRF-TP-11-003A);2012国家科技支撑计划资助项目(2012BAF09B04)

摘　　要：随着高强度低合金钢的广泛应用,高强度低合金钢的板形问题,特别是带钢出口凸度大问题,越来越受到关注。为了解决该问题,从辊形、模型、工艺3方面着手,在涟钢2250热连轧机综合采用优化工作辊CVC辊形及配套变接触支持辊VCRplus辊形,改进凸度反馈控制模型参数,优化精轧负荷分配等技术,显著提高了高强度低合金钢的板形控制效果,高强度低合金钢的平均凸度命中率提高了37.98%,尤其是对于超厚规格带钢,凸度命中率由原来的25.48%提高到95.89%,同时上游机架的综合辊耗降低了23.29%,延长了轧辊的使用寿命,创造了显著的经济效益。With the wide use of high strength low-alloy steel, the profile and flatness of HSLA steel becomes a subject of concern, especially for the problem of lager profile. Based on roll shape, control model and roll process, comprehensive shape control technologies including the optimization and design of work roll contour and VCRplus back- up roll contour, the digestion and research of crown feedback control model and the optimization of finisher load distribution were put forward and applied to production on the 2250 mm hot strip mill at Lianyuan. The application of such technologies significantly improved the shape control effects of HSLA steel. The percentage satisfying the control target range of average strip crown of HSLA steel had about 37.98% increase, especially for the heavy gauge, the hit rate of average strip crown was increased from 25.48% to 95.89%. And the roll wear was improved and the general roll consume of finishing mill was reduced by 23.29%, which prolonged the rolls＇ service lives and created great economic benefits for the enterprise.

关 键 词：高强度低合金钢 热连轧 板形控制 辊形 控制模型 负荷分配 

分 类 号：TG334.9[金属学及工艺—金属压力加工]