The study of infl uence of work rolls vibration during cold rolling on the quality of steel strip surface

Abstract

The article represents the results of the study of work rolls vibration influence on the quality of cold rolled strips on the basis of computer simulation of the rolling process in the DEFORM-2D program. It was determined that the size of alternating shadow zones on the surface of cold rolled strips received through simulation complies with experimental data. The comparison of the strip surface profile change depending on work roll vibration frequency and rolling speed demonstrated that rolling speed increase leads to increase in width of transversal stripes, and increase of vibration frequency leads to their decrease. The results of computer simulation led to the conclusion that vertical vibration of work rolls as the oscillation curve according to the Harmonic Law does not significantly influence the longitudinal strip off gauge. It was found that work rolls horizontal vibration does not influence the nature of deviations in the strip surface profile. Recommendations on use of simulation results are provided to evaluate the strip surface profile.

Keywords

• steel strip
• cold rolling
• work rolls vibration
• surface quality
• computer simulation