Surface roughness micro-deformation and transfer of bulk steel in hot rolling

Abstract

Surface roughness micro-deformation and transfer of bulk steel with oxide scale during hot rolling have a significant effect on the surface roughness and quality of final product. Using MSC-MARC finite element package, effects of the reduction, initial surface roughness of oxide scale, steel and work roll on surface roughness micro-deformation and transfer of the bulk steel have been analysed, and the results show that the surface roughness reduces significantly with an increase in reduction. Large initial surface roughness of oxide scale, steel and work roll can make final surface roughness to increase, and the effect of the average asperity wavelength is insignificant. The calculated surface roughness was verified with the measured value.