温轧镁合金板材轧辊温度场研究  

Change of Temperature Field for Roll of Warm-rolled Magnesium Alloy Sheet

作　　者：张国花[1] 马立峰[1] 鲁海平 ZHANG Guo-hua;MA Li-feng;LU Hai-ping(Heavy Machinery Engineering Research Center of the Ministry of Education,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学重型机械教育部工程研究中心,太原030024

出　　处：《太原科技大学学报》2018年第5期359-364,共6页Journal of Taiyuan University of Science and Technology

摘　　要：为了可以较精确地控制轧辊温度,文中对轧辊在轧制过程中的温度场进行了深入研究。采用有限差分法对轧辊的传热过程进行计算,并用deform软件对镁合金板材温轧过程进行数值模拟与实验验证。结果表明:轧制区内各点的温度随时间成阶段性上升趋势,整体温度随着轧制圈数的增加呈上升趋势,但是温度上升趋势越来越慢;轧辊温度的轴向渗透层和径向渗透层分别在16 mm左右和18 mm左右,温度都聚集在表面浅层;实验值与模拟值的最大误差为9.4%,比较吻合。In order to carry out temperature control design of roll to achieve real-time control of of roll temperature,the temperature of roll under normal rolling is studied in depth.Mathematical model is built using finite difference method and roll heat transfer is calculated,the temperature field of roll is studied when magnesium alloy sheet is warm rolled,and then deform software is used to carry out numerical simulation.The results show that the temperature of points on the surface for rolling zone increases with the phased trend,and the temperature of rolling zone increases with the number of rolling rings,but the temperature rising trend is slower;the axial temperature permeable layer and the radial temperature permeable layer of roll are 16mm and 18mm.The maximum error between the experimental and simulated values is 9.4%.

关 键 词：镁合金 传热模型 轧辊温度场 数值模拟 

分 类 号：TG146.22[一般工业技术—材料科学与工程]