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| A New Contour of the Backup Roll of 5 000 mm Wide Plate Mill |
| ZHANG Hua-zhi, SUN Deng-yue, XU Shi-min, LI Hai-long, DONG Yu-jie |
| National Cold Rolled Strip Equipment and Process Engineering Technology Research Center, Yanshan University, Qinhuangdao 066004, Hebei, China |
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Abstract In accordance with the uniform principles of contact stress, this article proposes a new back-up roll contour through considering several existing back-up roll contours; it also establishes a 3-D finite element rolling model by using the finite element software ABAQUS and changing the rolling parameters to analyze the stress field, bending deformation and plate shape of the new contour and the existing contours and got the minimum contact stress distribution of roll shape curve. We estimate the fatigue life of the new and the existing contour back-up roll by using a local stress-strain method and FE-SAFE fatigue analysis software with the results of the finite element stress analysis. The result of fatigue life estimation proves that the new contour of back-up roll can effectively improve the service life of back-up rolls.
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Received: 02 November 2013
Published: 14 July 2014
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2014, Vol. 49 
