摘要
考虑到轧辊的弹性变形以及轧件的弹性变形,建立了一套新的薄带平整轧制时的轧制压力模型。在模型中,对于一般薄带,考虑到停滞区的不对称性,采用混合摩擦理论分析了变形停滞区的摩擦力分布;而对于极薄带材,根据平整时塑性区相对弹性区缩小,摩擦力模型中的停滞区的范围并不止于塑性区,有可能扩大到弹性变形区这一特性,对相应的单位轧制压力分布情况进行了详细推导。同时,为了验证相关模型的准确性,采用该模型对宝钢1550CAL平整机相关典型规格产品轧制压力进行了理论计算,并在线实测出相应的轧制压力,其计算结果与实测值很好吻合,完全达到了工程上所需要的预报精度要求。因而该模型具有重要的理论意义和实用价值,可作进一步的推广与应用。
Not only elastic deformation of the roller is considered, but also elastic deformation of the rolled piece is considered, a set of new rolling pressure model about the thin strip level is established. In this model, for general thin strip the asymmetry of the stagnant zone is considered, the friction distribution in the deformation stagnant zone is analyzed by the combined frictional theory; for the super thin strip, according to the character that during leveling the plastic zone is reduced relative to the elastic zone and in the friction model the stagnant zone is not limited in the plastic zone and maybe extends into elastic deformation zone, the distribution of relevant unit rolling pressure is deduced in detail. At the same time, to validate the accuracy of relative model, the theoretical calculation of the rolling pressure of Bao Steel 1550CAL leveler relative typical specification products is made by this model and the relevant rolling pressure is practically measured on-line. The calculated results coincide better with practical measured results and completely achieve the prediction accuracy requirements required by the engineering. Therefore, this model haves important theoretical meanings and use values and can be further popularized and applied.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2004年第8期63-66,共4页
Journal of Mechanical Engineering
