Analysis on problem of plate biting and roll shifting in four-high rolling mill
WANG Tao 1，HUANG Qing-xue1，SHEN Guang-xian2，ZHENG Yong-jiang3
（1. College of Mechanical Engineering， Taiyuan University of Technology， Taiyuan 030024， Shanxi， China 2. National Engineering Research Center of Cold Strip Rolling Equipment and Technology， Yanshan University， Qinhuangdao 066004， Hebei， China 3. College of Mechanical Engineering， Yanshan University， Qinhuangdao 066004， Hebei， China）
Abstract：At present， the four-high rolling mills used in the hot rolling lines have the phenomenon that the work roll bites the plate and shifts along the axial， called the "plate biting and roll shifting". According to the "microscale statically determinate" design theory， the small gap between the roll bearing and the rolling mill window "about 1 mm" （with the liner wear increased） makes the roller system in indecisive state， and leads to the roll misalignment and cross. Sounder certain conditions， the phenomenon of plate biting and roll shifting will occur. The original theory of offset distance in rollers ignores the necessity of controlling tiny gap. In the current study， the method for avoiding the plate biting and roll shifting is the scientific control of the "unavoidable gap". The intelligent liner is developed to ensure the rolling mill roll parallel， stable positioning and reliable operation， eliminate the energy consumption of plate biting and roll shifting， make full use of high-grade rolling mill capacity， apply large pressure rolling new technology， produce high-strength new varieties， and achieve the upgrading of 4/6 hot/cold rolling mill and the purpose of low cost and high yield.
收稿日期: 2017-05-15
出版日期: 2017-11-14
引用本文:
王 涛，黄庆学，申光宪，郑永江. 四辊轧机叼板窜辊问题的解析[J]. 钢铁, 2017, 52(11): 81-86.
WANG Tao ，HUANG Qing-xue，SHEN Guang-xian，ZHENG Yong-jiang. Analysis on problem of plate biting and roll shifting in four-high rolling mill. Iron and Steel, 2017, 52(11): 81-86.
2017, Vol. 52 
