四辊轧机不对称刚度条件下轧辊弹性变形的研究

针对国内某热连轧厂精轧机组某机架轧机两侧刚度不对称的实际情况,为了研究四辊轧机驱动侧和操作侧刚度不对称条件下轧辊弹性变形的规律,采用影响函数法开发了基于双悬臂梁模型的轧辊弹性变形模拟计算模块,对刚度不对称时的四辊轧机进行了受力分析,对轧辊和轧件进行了离散化,给出了关键的影响函数.使用该计算模块并结合现场实际数据计算了不同刚度差条件下工作辊的弹性挠曲、工作辊与轧件之间的压扁、工作辊与支撑辊之间的弹性压扁、轧制力的横向分布和辊间压力的横向分布规律,研究了不同刚度差条件下轧件出口断面形状的变化规律.

Study on Roll Elastic Deformation Asymmetrical 4-High Mill Stiffness

According to the real condition of different stiffness between the driving side and operating side of some stand mill in a hot strip factory, a calculation module was developed using influence coefficient method based on dual cantilever beam theory to research the regularity of roll elastic deformation under the condition of asymmetrical stiffness. Force analysis of 4-high mill under asymmetric condition was demonstrated, the roll and work piece were discretized following the principle of influence coefficient method, and the key influence functions were presented. The module was used to calculate and analyze the elastic deflection of work roll, the bruise between work roll and backup roll, the bruise between work roll and work piece, the rolling force and roll load distribution in lateral direction between work roll and backup roll with different stiffness differences. The profile of the rolled work piece with different stiffness differences were calculated and analyzed.