调宽轧制平轧过程轧件角部应力研究

对调宽轧制“狗骨”材在平轧过程中的变形行为进行了有限元模拟,分析了“狗骨”材峰顶位置、最大狗骨高度、道次压下量对平轧过程轧件角部拉应力的影响·结果表明:“狗骨”材峰顶位置对轧件角部拉应力影响较大,达到66·7%,最大狗骨高度、道次压下量对轧件角部拉应力影响较小;随着狗骨位置的增加,轧件角部拉应力增加·研究结果对指导生产、提高成材率具有重要意义·

Research on the Corner Stress of Dog-Bone Shaped Workpiece During Flat-Spread Rolling

FEM simulation was done for the deformation behavior of a dog-bone shaped workpiece during flat-spread rolling. The effects of the apical position and maximum height of the workpiece and pass reductions on its corner tensile stress in rolling process were analyzed. The results showed that the change in apical position affects greatly the corner tensile stress which can be increased by 66.7%, and the changes in maximum height and pass reduction affect the corner tensile stress rather smaller. The comer tensile stress increases with the positional distance of the workpiece. The conclusion drawn from the simulation is of significance to improving productivity especially the rate of finished products.