Abstract
The experiments for cold rolling of stainless steel and carbon steel sheets were made to measure the friction coefficient between rolls and a material, the surface characteristics of rolled sheets and the width spread ratio of sheets. Then, the effect of roll surface profiles on the friction coefficient and the characteristics of rolled steel sheets was discussed. As a result, it has been shown that the friction coefficient in cold rolling with rolls polished by #800 polishing paper in axial direction is smaller than that in circumferential direction, and that the friction coefficient in cold rolling decreases with increase of the ratio of flat area on rolled sheet surface.
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