Subsurface Rolling Contact Fatigue Damage Distribution of Backup Roll After Periodic Dressing

摘要

In this paper, subsurface rolling contact fatigue damage distribution of backup rolls after used one time and periodic dressing are theoretically analyzed. The theoretical model established is verified by experiments test on ring samples and dissection part cut from backup rolls used in production. The results reveal that the subsurface damage of ring samples and dissection parts characterized by hardness test is consistence well with the distribution predicted by theoretical model. The maximum subsurface damage of backup rolls gradually moves toward the surface and the spalling of backup rolls can be prevented if suitable dressing amount be selected.