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Plate profile control during ultra-thin strip rolling utilizing work roll edge contact

  • Zhongkai Ren
  • Hong Xiao
  • Tao Wang
  • Qingxue Huang
Technical Paper
  • 34 Downloads

Abstract

During ultra-thin strip cold rolling, a phenomenon of work roll edge contact always appears. Very serious work roll edge contact and an edge wave occur when the strip thickness decreases; however, it is difficult to eliminate these problems with traditional control methods. To accurately analyse the influence of the mechanism of work roll edge contact on the strip shape control for ultra-thin strips, a finite-length semi-infinite body model of the roll is established based on the boundary element method. Then, a new work roll edge contact model which is applied to the rolling process of a laboratory twenty-high mill was established. The results show that when very serious work roll edge contact and an edge wave occur, the strip shape defect cannot be eliminated by traversing the first intermediate roll. Therefore, the roll gap is adjusted by utilizing work roll edge contact to improve its profile.

Keywords

Ultra-thin strip rolling Work roll edge contact Finite-length semi-infinite roll flattening model Plate profile control 

Notes

Acknowledgements

The authors gratefully acknowledge the support of the National Natural Science Foundation of China (Grant No. 51474190) and the support of Taiyuan City Science and Technology Major Projects (Grant No. 170203).

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Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2018

Authors and Affiliations

  • Zhongkai Ren
    • 1
    • 2
  • Hong Xiao
    • 1
  • Tao Wang
    • 2
  • Qingxue Huang
    • 2
  1. 1.National Engineering Research Center for Equipment and Technology of Cold Strip RollingYanshan UniversityQinhuangdaoChina
  2. 2.College of Mechanical EngineeringTaiyuan University of TechnologyTaiyuanChina

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