Effect of Flatness Actuators in UCM Mill on Rolling Pressure Distribution

doi:10.12068/j.issn.1005-3026.2018.03.009

Abstract

Abstract: Based on a 1420mm tandem cold rolling mill in a domestic plant， rolling processes in an UCM mill were simulated by 3D elastic-plastic finite element method(FEM). Effects of work roll bending(WRB)， intermediate roll bending(IRB)and intermediate roll shifting(IRS)on the rolling pressure were investigated. The results showed that peak values of rolling pressure near the strip edge disappear and the central rolling pressure increases with increasing of WRB， and the saddle-shaped distribution of rolling pressure becomes a convex-shaped distribution. Rolling pressure is hardly affected by IRB， and its distribution form is not changed basically. The sharply increased trend of rolling pressure near the strip edge is eliminated due to IRS， and the steep pressure field becomes smooth. Rankings of effects of the three actuators on rolling pressure are: WRB>IRS>IRB， which is in good agreement with the comparison of actuator efficiencies， and it shows that the working mechanism of controlling strip shape is achieved by affecting the rolling pressure distribution.

Key words: UCM mill, elastic-plastic FEM, work roll bending(WRB), intermediate roll bending(IRB) and intermediate roll shifting(IRS), rolling pressure

CLC Number:

TG335.5

WANG Qing-long， SUN Jie， WANG Zhen-hua， ZHANG Dian-hua. Effect of Flatness Actuators in UCM Mill on Rolling Pressure Distribution[J]. Journal of Northeastern University Natural Science, 2018, 39(3): 345-350.

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