基于铅轧实验宽展公式中的名义摩擦因数（英文）

发布时间：2018-01-26 19:31

本文关键词： 宽展轧制摩擦因数拟合自学习　出处：《Transactions of Nonferrous Metals Society of China》2015年08期 　论文类型：期刊论文

【摘要】：在低辊径-厚度比下,研究摩擦因数在宽展公式中的作用,摩擦因数对展宽的作用主要体现在接触面的粗糙程度。经过5组不同的铅轧实验,获得不同等级的摩擦因数。随着宽厚比、压下率和辊径-厚度比的改变,可以得到不同的名义摩擦因数并应用在相应的公式中。随后提出一个拟合公式,通过与232次实验结果进行比较,验证拟合得到的名义摩擦因数的误差低于12%。通过一定次数的自学习修正,该误差减少至2%以下。最终实现通过可以变化的名义摩擦因数对宽展进行更加精确的预测。在真正的工作环境下使用名义摩擦因数,得到的宽展预测误差也小于2%。在实际生产中验证,得到了一个能够对宽展公式中摩擦因数进行设置的参考和解决方法,从而满足工业生产的应用。
[Abstract]:Under the condition of low roll diameter to thickness ratio, the effect of friction coefficient on the width expansion formula is studied. The effect of friction coefficient on broadening is mainly reflected in the roughness of the contact surface. Five groups of different lead rolling experiments have been carried out. With the change of the ratio of width to thickness, the reduction rate and the ratio of roll diameter to thickness, different nominal friction coefficient can be obtained and applied to the corresponding formula. Then a fitting formula is proposed. By comparing with 232 experimental results, it is verified that the error of nominal friction coefficient obtained by fitting is less than 12. Through a certain number of self-learning correction. This error is reduced to less than 2%. Finally, a more accurate prediction of the spread is achieved through a variable nominal friction coefficient. Nominal friction factor is used in a real working environment. The prediction error is less than 2. A reference and solution method to set the friction factor in the expansion formula is obtained, which can satisfy the application of industrial production.
【作者单位】：东北大学轧制技术及连轧自动化国家重点实验室;
【基金】：Projects(51074052,50734002)supported by the National Natural Science Foundation of China
【分类号】：TB302
【正文快照】： 1 IntroductionIn hot rolling process,knowledge of how thematerial is going to spread during a pass is the mostnecessary thing for shape controlling.An accurateprediction for spread in rolling process will make theincrease of both quality and yield of wor

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