×

Effect of asymmetrical stand stiffness on hot rolled strip shape. (English) Zbl 1165.74304

Summary: The difference of elastic springs between the operating side (OS) and driving side (DS) of rolling mill has a significant influence on the strip shape not just the strip thickness. Based on the slit beam and roll deformation theories, the roll force distribution was analysed considering the asymmetric stiffness of the OS and DS of rolling mill, and the work roll and backup roll deformation equations were deduced respectively, and the thickness distribution in lateral direction of the hot rolled strip at exit was discussed. Using the roll elastic deformation analysis software which was developed previously based on the influence coefficient method, the roll flattening distribution, roll pressure distribution and the rolling force distribution caused by the asymmetric stand stiffness were calculated and analysed, and the exit strip profile of the rolling mill was also presented. The relationship between the mill stiffness difference and the strip wedge shape or single wave was obtained. Effect of the upstream asymmetric mill on strip crown and flatness of the downstream stands was discussed.

MSC:

74B15 Equations linearized about a deformed state (small deformations superposed on large)
PDFBibTeX XMLCite
Full Text: DOI

References:

[1] Zhou S. X., J. Steel Reasearch 67 pp 200–
[2] Kitahama, Iron and Steel Engineer 64 pp 34–
[3] Wood G. E, MPT 12 pp 92–
[4] Shimizhu Y., Technology Review-Mitsubishi Heavy Industries 37 pp 45–
[5] Xu Jianzhong, Gong Dianyao etal. Steel Rolling 20 pp 8–
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.