Theoretical analysis based on a modified mixed-film lubrication model for metal forming processes

来源期刊：中国有色金属学报(英文版)2002年第5期

论文作者：王桥医 谭建平 熊勇刚 云忠

文章页码：936 - 940

Key words：mixed film; rolling; lubrication; cold rolling

Abstract: An analytical model for metal rolling in the mixed lubrication regime was developed based on Wilson and Chang’s asperity flattening model and Von Mises homogenous deformation model. A more rigorous average Reynolds equation was used to calculate the hydrodynamic pressure. The variations of the yield stress with strain were considered in the model. An efficient iteration procedure was developed to solve the contact area, film thickness and hydrodynamic pressure. The model is more practical with fewer assumption and converges quickly. It is applicable to a wider range of rolling regimes. The calculation results using the model agree well with the literature as well as with measured data from a rolling mill.