热轧薄规格带钢平整过程板形控制技术

为了提高热轧薄规格带钢平整的板形质量，在平整机上采用了新的辊形配置。在支撑辊上采用变接触式 支撑辊辊形，在工作辊上采用六次方多项式正凸度辊形。变接触支撑辊辊形可以降低轧辊挠曲变形和边部应力的 集中，增大弯辊力的调控功效。采用正凸度工作辊辊形，可以弥补平整机的磨损辊形，延长平整轧制计划单位的长 度。此辊形配置在首钢迁钢热轧平整机上应用，保证了平整改善薄规格带钢板形质量，延长了平整轧制计划的长度。

Flatness Control Technology Applied in Temper Rolling for Hot Rolled Thin Gauge Steel Strip

In order to enhance the flatness quality of thin gauge hot rolling strip through temper rolling,new type of roll contour configuration was developed for temper rolling mill.Variable contact roll contour and positive crown contour with six-order polynomial were applied on back-up and work rolls,respectively.Variable contact back-up roll can reduce roll deflection and contact stress concentration,and also increase the control ability of bending force.Positive crown work roll is applied to compensate roll wear and prolong the temper rolling schedule length.This roll contour configuration technology is used on the temper rolling mill of Qiangang Company of Shougang.The flatness quality of hot rolled thin gauge strip can be ensured after temper rolling process and the length of temper rolling is also increased.