摘要
A lubrication model was developed for explaining how to form an oil film inthe deformation zone, predicting the film thickness and determining the characteristics oflubrication in the strip rolling process, combined with the knowledge of hydrodynamic lubricationand rolling theories. Various mineral oils with viscosities from 0.032 to 1.6 Pa-s were used toobtain different film thicknesses in the strip cold rolling. Results from the experiment andcalculation show that the oil film forming in hydrodynamic lubrication is up to the bit angle and ahigher rolling speed or a higher rolling oil viscosity. The mechanism of mechanical entrainmentalways affects the film thickness that increases with the rolling oil viscosity increasing or thereduction rate decreasing in rolling.
A lubrication model was developed for explaining how to form an oil film inthe deformation zone, predicting the film thickness and determining the characteristics oflubrication in the strip rolling process, combined with the knowledge of hydrodynamic lubricationand rolling theories. Various mineral oils with viscosities from 0.032 to 1.6 Pa-s were used toobtain different film thicknesses in the strip cold rolling. Results from the experiment andcalculation show that the oil film forming in hydrodynamic lubrication is up to the bit angle and ahigher rolling speed or a higher rolling oil viscosity. The mechanism of mechanical entrainmentalways affects the film thickness that increases with the rolling oil viscosity increasing or thereduction rate decreasing in rolling.
