ABSTRACT

In the strip cold rolling process, the inclined wave defect is an atypical flatness defect that can adversely affect the subsequent coating process. In order to investigate the causes of inclined wave defects, the tension stress distribution in the cold rolling process was investigated by using the method of assuming pre-buckling load distribution and stress boundary conditions in this paper. According to the study, the load distribution that produces the inclined wave defect was obtained, and the load distribution was verified by finite element simulation. The results show that the obtained load distributions are consistent with the conditions for the generation of inclined wave defects. On this basis, the influence laws of several parameters on the inclined wave defects are obtained through rolling test and simulation analysis, and the effective suppression of strip inclined wave defects is achieved.

摘要

在带钢冷轧过程中，斜波缺陷是一种非典型的平面度缺陷，会对后续的镀层工艺产生不利影响。为了探究斜波缺陷产生的原因，本文采用假设预屈曲载荷分布和应力边界条件的方法，研究了冷轧过程中的拉应力分布。根据研究得出了产生斜波缺陷的载荷分布，并通过有限元仿真验证了载荷分布。结果表明，所得载荷分布符合斜波缺陷的产生条件。在此基础上，通过滚动试验和仿真分析得到了几个参数对斜波缺陷的影响规律，