Aiming at the problem of large fluctuation of finishing mill stiffness in a domestic plate factory,Combined with the current situation of rolling mill equipment,Based on the simplified calculation model of rolling mill stiffness,a rolling mill stiffness stability evaluation system was established.It is also determined that the cracking loss of the uniform pressing pad and the large clearance of the lining plate of the lower working roll are the main reasons for the large fluctuation of the rolling mill stiffness.By improving the design of uniform pressure pad of rolling mill and controlling the clearance of work roll liner,The rigidity of rolling mill is guaranteed at a better level.
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