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 Several problems of theory about elastic rolls deformation were studied in this paper. On the basis of the conclusion of elastic theory, the Green's function of flattening between roll was derived, so that the flattening between rolls can be treated more rationally. And further the matrix algorithm was given, out of which the theoretical analysis of the strip shape improvement with Double Steps BUR was made. Theoretical and experimental study has proved that DSB can eliminate the effect of rolling pressure disturbance... Several problems of theory about elastic rolls deformation were studied in this paper. On the basis of the conclusion of elastic theory, the Green's function of flattening between roll was derived, so that the flattening between rolls can be treated more rationally. And further the matrix algorithm was given, out of which the theoretical analysis of the strip shape improvement with Double Steps BUR was made. Theoretical and experimental study has proved that DSB can eliminate the effect of rolling pressure disturbance on strip shape and enlarge the effect of roll bending jack force. It is a simple, effective and suitable for the real condition of out country.  本文对轧辊弹性变形理论的几个重要问题进行了研究。在弹性力学结论的基础上,导出了辊间压扁影响函数,合理地处理了辊间压扁问题,并进而给出了计算轧辊弹性变形的矩阵计算方法。利用矩阵方法进行了双阶梯支撑辊的理论分析,并进行了实验研充。结果证明,利用双阶梯支撑辊可以排除轧制压力波动对板形的影响,可以增强弯辊效果,是一种简便有效,符合我国国情的方法。  The calculation module of rolls elasticity deformation in 4h mill was developed by influence function method The calculation model of influence function of rolls flattening was improved The disadvantage of division by zero was overcome in floating point calculation The treating methods of smoothed exponential and convergence index were introduced The problem of calculation precision and convergence was solved The module was applicable for calculating... The calculation module of rolls elasticity deformation in 4h mill was developed by influence function method The calculation model of influence function of rolls flattening was improved The disadvantage of division by zero was overcome in floating point calculation The treating methods of smoothed exponential and convergence index were introduced The problem of calculation precision and convergence was solved The module was applicable for calculating rolls elasticity deformation in conventional 4h mill,PC mill and CVC mill It would be a useful tool in shape and flat control in hot strip rolling  采用影响函数方法开发了四辊轧机轧辊弹性变形解析模块 ,完善了辊间压扁和工作辊压扁影响函数计算模型 ,克服了轧辊压扁影响函数计算过程浮点数被零除的缺陷 ,提出了平滑指数和收敛指标取值的处理方法 ,有效地解决了四辊轧机辊系弹性变形计算精度及收敛问题。该模块适应于普通四辊轧机、PC轧机和CVC轧机轧辊弹性变形计算 ,为热轧带钢板形控制提供了解析工具  Based on the conventional 4 h mill the roll elastic deformation is divided into three parts: backup roll deflection deformation, the flattening deformation between backup roll and work roll and the flattening deformation between work roll and the plate Then influence function method is used to calculation the roll elastic deformation The calculation results express the influence rules of roll radius, roll crown, plate width and the rolling force on roll elastic deformation Then a high precision... Based on the conventional 4 h mill the roll elastic deformation is divided into three parts: backup roll deflection deformation, the flattening deformation between backup roll and work roll and the flattening deformation between work roll and the plate Then influence function method is used to calculation the roll elastic deformation The calculation results express the influence rules of roll radius, roll crown, plate width and the rolling force on roll elastic deformation Then a high precision regress model is afforded At last by reforming the traditional model, a new, perfect mill spring model is afforded With this model it is convenient to analysis the influence of roll radius, roll crown and plate width on mill stiffness Comparison with the measure value of X ray gauge meter the model prediction deviation is less than 0 12 mm  针对普通 4辊中厚板轧机将辊系弹性变形分解成 3个部分 :支撑辊挠曲变形、辊间压扁和工作辊压扁 ,并利用轧辊弹性变形的数值解法—影响函数法对这 3部分变形进行了分析 ,得出了轧辊半径、轧辊凸度、轧件宽度和轧制力等因素对辊系弹跳的影响规律 ,并提炼出相应的高精度回归模型。同时对传统轧机弹跳模型进行改造 ,提出更加完备的轧机弹跳模型。利用该模型可以很方便地计算轧辊辊径、凸度和轧件宽度对轧机弹跳的影响。通过与 X射线测厚仪测试结果相比较可知 ,模型预测误差小于 0 .1 2 mm,有利于负公差轧制   << 更多相关文摘 
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