板带材轧制辊间应力分布规律  

Stress Distribution on Rolls During Plate Rolling

作　　者：田勇[1] 胡贤磊[1] 王昭东[1] 王国栋[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2009年第4期539-542,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50604060)

摘　　要：针对轧制过程中局部应力过大造成轧辊局部脱落的问题,结合国内某厂轧机参数,运用影响函数法分析四辊轧机辊系变形,得出支撑辊直径、工作辊直径、支撑辊凸度、工作辊凸度、轧件入口凸度和宽度等不同参数对沿辊身方向辊间应力分布的影响规律.研究结果表明:支撑辊直径、工作辊直径、轧件入口凸度和宽度的改变对应力分布影响不大;支撑辊凸度和工作辊凸度,特别是工作辊凸度的改变对应力分布的影响较大,是引起轧辊边部脱落的主要原因.To solve the problem of local exfoliation of rolls due to the overstress in the middle of a roll during rolling, the influence function method which a domestic steel plant have used to determine the parameters of a four-high mill so as to analyze its rolls＇ deformation is introduced in the investigation on the influence of different parameters on the stress distribution along roll axes, such as the diameters and crowns of both back-up and working rolls and the crown and width of workpiece. The results revealed that the changes in roll diameter and crown/width of workpiece have no obvious influence on the stress distribution. However, the change in crown of the back-up roll especially of the working roll affects greatly the stress distribution, which is the main cause for the edge exfoliation of rolls.

关 键 词：轧制 影响函数法 应力分布 轧辊 

分 类 号：TG333.7[金属学及工艺—金属压力加工]