Abstract:In view of the problem that initial roll shape was influenced by the residual wear and thermal roll shape when high-speed steel (HSS) rolls were used repeatedly in hot rolling finishing mill, the influence of residual wear and thermal roll shape on plate shape control accuracy and difficulties were analyzed, the idea modeling method of the temperature field during air cooling process after high-speed steel rolling was proposed, and the calculation model of the temperature field during air cooling process of roll was established. On this foundation, based on the research of the two-level system framework of hot continuous rolling production line, the design scheme of the initial roll shape prediction technology for repeat-serviced high-speed steel rolls was formed and applied in the 1 580 mm hot continuous rolling production line in Shougang Jingtang United Iron and Steel Co., Ltd. The results show that this technology is effective in realizing the more efficient application of high-speed steel rolls and improving the control accuracy of plate shape.
王文广, 徐芳, 李兴波, 李东宁. 热连轧精轧高速钢轧辊重复上机初始辊形预报[J]. 中国冶金, 2022, 32(11): 115-120.
WANG Wen-guang, XU Fang, LI Xing-bo, LI Dong-ning. Initial roll shape prediction for repeat-serviced high-speed steel rolls of hot rolling finishing mill[J]. China Metallurgy, 2022, 32(11): 115-120.