ANLYSIS OF HYDRODYNAMIC FLUID LUBRICATION IN STRIP DRAWING PROCESS

The main theme of this paper is a study of the theoretical film thickness which could be developed under representative practical drawing condition this quantity gives a good indication of the potential of the system for hydrodynamic lubrication action when compared with the surface quality of die and strip. We also include the effect of changing the work material, lubrican t viscosity, and pressure coefficient of viscosity on the pressure, shear stress and temperature of die, lubricant film and strip. The process consists of strip passing through die of conical shape. The lubricant film introduced during the process complete ly separates the die from work piece material. The film can be divided into three regions, inlet zone, working zone and outlet zone in which consideration is taken for working zone as well as outlet zone for effect of viscosity on fluid in case of lubricat ion thickness.