Abstract
Ceramic rolls/rollers have an advantage in steel strip production because of its high wear resistance and corrosion resistance. The new rolls/rollers consist of a ceramic sleeve and two alloyed steel shafts connected to the sleeve ends only under a small shrink fitting ratio because of the brittleness. However, the alloyed steel shafts may be loosening out from the ceramic sleeve under such low shrink fitting ratio. In the some previous studies have considered the coming out mechanism was considered by the numerical simulation focusing on the displacement and the shear stress at the joint end. This phenomenon should be confirmed without experiment. In this study, therefore, in order to clarify the coming out behavior, rotating bending experiment is conducted for a small roller specimen consisting of a steel sleeve and steel shafts connected by low shrink fitting ratio. Then, it is found that the coming out can be realized in the small specimen.
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