A Mixed Lubrication Model for Cold Strip Rolling—-Part I: Theoretical

Abstract

An analytical model for strip rolling in the mixed lubrication regime is developed. The average Reynolds equation for Christensen surfaces with the arbitrary Peklenik surface pattern parameter is combined with an analysis for asperity flattening under conditions of bulk plastic flow to treat lubrication in the mixed regime. An inlet zone analysis and the influence of pressure on viscosity are included and, by using special numerical techniques, the model can be used over a wide speed range.