Study the distribution of force on the roll system of the cold continuous rolling mill and reveal the causes of edge ring cracks on the working rolls of the cold rolling four high CVC continuous rolling mill.Based on the case of edge peeling of a certain factory's rolling mill,the stress distribution status of the working roller during service was calculated through observation of the peeling morphology,hardness testing analysis,and finite element simulation calculation.The results indicate that the maximum contact stress should be located at the root of the chamfer at the end of the support roller and corresponding peak,with a maximum stress of 1000MPa.The circumferential cracking or local peeling at the edge of the work roll is mainly related to the large contact and compression stress at the end of the roll body caused by the lateral movement of the work roll.Under the action of high cycle compressive stress,microcracks form on the secondary surface of the roller,which eventually lead to the failure of the roller as the cracks propagate.
维普
万方数据
