热轧宽带钢生产线精轧工作辊辊形研究  

Research on the roll contour of finishing work roll in hot rolled wide strip production line

作　　者：吴玉霄 霍建生 张欣觌 张冉 韩彬彬 WU Yuxiao;HUO Jiansheng;ZHANG Xindi;ZHANG Ran;HAN Binbin(Tangshan Iron and Steel Company Limited,Tangshan 063000,China)

机构地区：[1]唐山钢铁集团有限责任公司,河北唐山063000

出　　处：《轧钢》2024年第6期94-99,共6页Steel Rolling

摘　　要：在热轧带钢生产线同规格产品连续生产时的轧程中后期,带钢容易出现边翘缺陷,宽规格带钢尤其明显。为解决此问题,针对热轧宽带钢生产线,对不同CVC辊形参数进行对比分析,阐述了不同辊形参数对精轧工作辊辊形曲线变化的影响,并对CVC辊形+凹辊辊形组合的应用进行了研究。结果表明:CVC辊两端辊径差与中间辊径差存在负相关关系,并以某2 050 mm热轧产线举例进行了说明,为CVC辊形曲线的确定和优化提供了参考。通过分析凹辊曲线确定方式和凹辊轴向横移方式,介绍了凹辊在实际应用时的优缺点,并对凹辊和CVC辊配合使用时的弯辊变化与轧辊热膨胀数值之间的关系进行了分析,从理论上说明了CVC辊形+凹辊辊形组合使用可以有效解决边翘缺陷,延长轧制公里数,最后通过列举相同条件下同钢种规格生产后的边翘变化,从应用角度出发验证了其有效性。Hot strip mills are prone to edge wraping defects in the later stages of the same-specification product continuous production,especially for wide-specification products.To solve this problem,the influence of different CVC roll contour parameters on the variation of the finishing work roll contour curve for hot rolled wide strip mills is analyzed,and the application of CVC roll contour+concave roll contour combination is studied.The results show that there is a negative correlation between the end roll diameter difference and the middle roll diameter difference of CVC roll,and an example of 2050 mm hot rolling production line is given to illustrate this.This provides reference for the determination and optimization of CVC roll contour curves.The advantages and disadvantages of practical application of concave roll are introduced by analyzing the concave roll curve determining method and the axial shifting method of the concave roll,and the relationship between the bending change of the concave roll and the heat expansion value of the roll is analyzed theoretically,which shows that the CVC roll contour+concave roll contour combination can effectively solve the edge warping defect,extend the rolling kilometerage.Finally,the validity of its effectiveness is verified from the application angle by listing the changes in edge wraping of the same specification and steel grade after production.

关 键 词：热连轧 CVC辊形 辊形参数 凹辊 边翘 

分 类 号：TG3[金属学及工艺—金属压力加工]