六辊冷连轧机中间辊横移过程辊间接触压力分析

发布时间：2018-05-07 21:28

本文选题：辊间接触压力 + 横移速度　；参考：《钢铁》2017年01期

【摘要】：为了使轧机板形控制性能适应带钢规格材质变化,用于连续轧制高档冷轧薄带钢的六辊冷连轧机大都采取中间辊可横移技术。但是,中间辊横移必定使辊间接触压力分布更不均匀,导致出现接触压力尖峰。在中间辊横移过程中,辊间接触压力和横移阻力都会随横移速度的变化而发生改变,并可能导致辊间接触压力在轧辊端部形成更大的压力尖峰,从而造成轧辊磨损不均匀并缩短轧辊的使用周期。通过建立有限元仿真模型,以仿真模拟获得中间辊横移过程中辊间接触压力的变化规律后,优化设计轧辊辊形,并且提出使用非对称弯辊力的方法,实现了辊间接触压力的分布均匀化,降低了辊间接触压力尖峰值,并延长了轧辊的使用寿命。
[Abstract]:In order to adapt the shape control performance of rolling mill to the change of strip material quality, most of the six-high cold tandem rolling mills used in continuous rolling of high-grade cold rolled thin strip mill adopt the intermediate roll traverse technology. However, the transverse movement of the middle roller will make the distribution of contact pressure between the rollers more uneven, resulting in the peak of the contact pressure. In the process of the intermediate roll's transverse movement, the contact pressure and the transverse resistance between the rollers will change with the change of the speed of the transverse movement, which may lead to a greater pressure spike at the end of the roller. Thus, the roller wear is uneven and the service cycle of the roll is shortened. By establishing the finite element simulation model, after obtaining the changing law of the contact pressure between the rollers during the process of the middle roll's transverse movement, the roll shape is optimized and the method of using asymmetric bending force is put forward. The distribution of contact pressure between rollers is uniform, the peak value of contact pressure between rollers is reduced, and the service life of rollers is prolonged.
【作者单位】：武汉科技大学冶金装备及控制教育部重点实验室;
【基金】：国家自然科学基金资助项目(51405353)
【分类号】：TG333

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