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| Shape Adjusting Performance by Taper Roll on Tandem Cold Rolling Mill |
| YANG Guang-hui1,CAO Jian-guo1,ZHANG Jie1,JIA Sheng-hui2,ZENG Wei2 |
1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. Cold Rolling Plant, Wuhan Iron and Steel Group Corp., Wuhan 430083, Hubei, China |
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Abstract In order to increase the strip specification such as silicon steel which required high precision on the edge drop control, and to improve the capability of strip edge drop control of 1700mm tandem cold rolling mill and eliminate the problems such as a small shifting stroke of the taper roll, no enough use of roll shifting function and the obvious fluctuation of strip edge drop, the contour design method of the edge control part of taper roll was proposed after studying the taper roll contour and its edge drop control shifting strategy. The finite element method was built by the software ANASYS 9.0 to analyze the mill shape adjusting characteristics. The mathematical model of static comprehensive analysis for tandem cold rolling was built and the influences on the cold rolling production were studied because of the thickness fluctuation and hardness fluctuation of incoming hot rolled product. After analyzing, it was seen that the gap transverse stiffness was remarkably improved by taper work roll shifting, so the anti-fluctuation ability of incoming hot rolled product was strengthened and rolling stability was improved. It is shown in the rolling trial that the strip edge drop average is decreased from 14.9μm to 7.5μm and the fluctuation of strip edge drop is restrained to some extent and controlled within ±5μm after using the taper roll designed by the designing method.
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Received: 11 November 2010
Published: 01 November 2011
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2011, Vol. 46 
