板宽和轧辊凸度对热轧板带凸度控制的影响

来源期刊：钢铁2011年第3期

论文作者：赵铁勇 肖宏 王健 杨霞

文章页码：51 - 54

关键词：板宽； 板凸度； 辊凸度； 刚塑性有限元

Key words：strip width； strip crown； roll crown； rigid-plastic finite element method

摘    要：针对通常在研究板带宽度变化对出口板凸度的影响时没有考虑辊系凸度这一因素,应用三维刚塑性有限元法、影响函数法、三维弹性有限元法,开发了一个分析板带热轧过程的分析软件。利用该软件研究了支承辊、工作辊的凸度从-0.5mm到0.5mm变化时,板宽的变化对出口带钢板凸度的影响规律。结果表明:支承辊、工作辊凸度为0时,板凸度随板宽的增大呈下开口抛物线分布,峰值拐点对应的板宽约为辊身长度的70%,当工作辊辊凸度由-0.5mm逐渐增大到0.3mm时,板凸度的峰值拐点对应的板宽由1 300mm转变到900mm,当凸度大于0.3mm时拐点消失,随板宽的增大板凸度逐渐减少。而支承辊凸度的变化只是影响了出口板凸度值,峰值拐点的位置和辊凸度为0时相同。

Abstract: Base on the fact that the rolls crown was not considered when analyzing the influence of the strip width on the strip crown,using three-dimension rigid-plastic finite element method,influence function method,and the three-dimension finite element method,a analyzing software was developed.The influence law of different strip width on the strip crown was studied with this software when the rolls crown changes at the range of -0.5mm to 0.5mm.The results show that when the rolls crown is zero,the strip crown changes with the increase of the strip width as the parabola and the strip width at the turning point is 1 000mm,account for 70% of the length of roll barrel.The strip width at the turning point varies from 1 300mm to 900mm when the work roll crown changes from -0.5mm to 0.3mm,and when work roll crown is greater than 0.3mm the turning point is disappear.Otherwise,the backup roll crown just has the influence on the value of the strip crown,the turning point always exist and the position is not changed.