针对1700热连轧机下游机架工作辊磨损严重且不均匀导致宽幅无取向硅钢的板形控制等问题,采用ANSYS建立辊系弹性变形有限元模型并研制宽幅无取向硅钢生产的ASR-N非对称自补偿工作辊。研究结果表明:与长行程窜辊的常规凸度工作辊相比,ASR-N工作辊服役期内轧机辊缝横向刚度提高13.9%以上,凸度调节域扩大8.0%以上。该技术应用于1700热连轧机工业生产实践,不仅2.3mm×1.28m宽幅无取向硅钢轧制单位由试生产时的40卷扩大到正常轧制的70卷以上,且带钢出口凸度小于45μm的比例由50.0%提高到94.9%,凸度大于60μm的比例由20.2%下降到0.7%。
In order to solve the problem of the wide non-oriented electrical steel profile and flatness control caused by the serious and uneven wear of work rolls in the downstream stands of 1700 hot strip mill, the elastic deformation finite element model of roll stacks was built by ANSYS software package and ASR-N (Asymmetry self-compensating work rolls) was developed for the wide non-oriented electrical steel production. The simulation analysis results show that, in comparison with the conventional work roll contour with long stroke shifting system, the ASR-N's transverse stiffness of roll gap increases by above 13.9% and the contour-adjusting area expands by above 8.0%. When the technology is applied, the number of the wide non-oriented electrical steel (2.3 mm× 1.28 m) in one rolling campaign rises from 40 coils of the trial production to 70 coils of the industrial production, the ratio of the measured strip crown less than 45 μm is increased from 50.0% to 94.9%, and the ratio of the measured strip crown more than 60 μm is decreased from 20.0% to 0.7%.