摘要
针对某500热连轧窄带钢生产线Φ650三辊粗轧机组采用双根轧制代替单道次轧制的优化方案,利用ANSYS/LS-DYNA有限元软件对Q235B钢优化前、后的整个粗轧过程进行了数值模拟分析。分析结果表明:优化前后轧件断面温度、等效应力-应变分布规律基本一致;特征点温度与实测值吻合良好,前5道次轧件侧面出现了明显的双鼓形;由于采用共轭孔型轧制,上下轧槽直径不对称,轧件上表面应力、应变比下表面略大;对优化前后的轧制力及轧件尺寸进行了分析对比,校核了优化前后粗轧机的主设备能力。优化结果表明优化后的轧线生产能力提高28.47%。
For optimization scheme of the double pass rolling replacing single-pass rolling for Φ650 three-roll roughing mill according to a500 hot-rolled narrow strip rolling line,the whole roughing rolling processes of steel Q235 B before and after optimization were simulated by nonlinear finite element software ANSYS / LS-DYNA. Analysis results show that the temperature at cross-section and the stress and strain distribution after optimization are basically the same with those before optimization. Temperatures at feature points are in good agreement with the measured values,and there are double drums at the sides of workpiece of the front five passes. Because the conjugate hole type is applied,the diameters of up and down groove are asymmetry,and the stress and strain on the upper surface are slightly larger than that of the lower surface. Furthermore,the rolling force and rolling part size are compared and analyzed before and after optimization,and the ability of the main equipment is tested. Optimization result shows that production capacity increases by 28. 47% after optimization.
出处
《锻压技术》
CAS
CSCD
北大核心
2016年第9期139-147,共9页
Forging & Stamping Technology
关键词
窄带钢
粗轧机组
共轭孔型
轧制节奏优化
有限元模拟
narrow strip steel
roughing mill
conjugate hole type
rolling rhythm optimization
FEM simulation
