Surface Morphology Evolution of Steel Strip During Cold Rolling After Hydrogen Reduction
A five-pass cold rolling experiment of steel strip after hydrogen reduction was performed on a 4-high mill. The surface morphologies of samples were observed by SEM and the surface roughness curves were measured by using a TR200 roughness meter before and after rolling deformation. The evolution rules of the sample surface morphology under different roll surface roughness and lubrication conditions were emphatically analyzed and discussed. The results showed that most of defects on the sample surface were roll-flattened after five-pass cold rolling, and the remains turned into mi-cro pits leaving on the sample surface. The surface smoothness increased with the increase of rolling passes. The cracks were easier to be roll-flattened and the residual defects were less and shallow on the sample surface but the roller marks were relatively more under the condition of dry friction than under the condition of oil lubrication.
NETL
NSTL
万方数据
维普
