Influence of chamfering on roll shape performance of variable contact-length support roll
LIU Dong-ye1, SHAO Jian2, HE An-rui2, LIU Peng-yu3, LI Wen-jun3
1. Design and Research Institute Co., Ltd., Beijing University of Science and Technology, Beijing 100083, China; 2. National Engineering Research Center for Advanced Rolling, University of Science and Technology Beijing, Beijing 100083, China; 3. Hot Rolling Factory, Jilin Jianlong Iron and Steel Co., Ltd., Jilin 132104, Jilin, China
Abstract：The distribution of the contact stress between the rollers directly affects the fatigue state and wear state of the rollers,and then affects the service life of the supporting rollers. A two-dimensional finite element model with variable thickness is used to simulate and analyze 54 conditions of different chamfering length and depth under the condition of VCR+ supporting roll shape. The relationship between the peak value of contact stress between rolls and the position under different chamfering conditions is demonstrated,and the chamfering performance reference quantity is proposed to evaluate the influence of chamfering form on roll fatigue failure. Finally,according to the results of the finite element analysis and the wear state of the support roller,the optimization method of chamfering under the condition of VCR+ roll shape is proposed,which provides the theoretical and practical basis for the optimization of chamfering of the support roller on site.
刘东冶, 邵健, 何安瑞, 刘鹏宇, 李文俊. 倒角对变接触支撑辊辊形性能的影响[J]. 钢铁, 2020, 55(12): 56-60.
LIU Dong-ye, SHAO Jian, HE An-rui, LIU Peng-yu, LI Wen-jun. Influence of chamfering on roll shape performance of variable contact-length support roll[J]. Iron and Steel, 2020, 55(12): 56-60.
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2020, Vol. 55 
