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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%。
Aiming at the optimization scheme of Φ650 three-roller roughing mill of a 500 hot strip rolling mill with double-root rolling instead of single-pass rolling, the whole rough rolling of Q235B steel was optimized with ANSYS / LS-DYNA finite element software The process of numerical simulation. The results show that the distributions of the section temperature and the equivalent stress-strain are basically the same before and after the optimization. The temperature of the characteristic point is in good agreement with the measured value. The double-drum shape appears on the side of the first five passes. Type of rolling, the upper and lower groove diameter asymmetry, the upper surface of the rolling stress, strain slightly larger than the lower surface; optimized before and after the rolling force and the size of the rolling were analyzed and compared the optimization of the roughing mill before the main equipment ability. The optimization results show that the optimized rolling line production capacity increased by 28.47%.