调宽轧制平轧过程轧件角部应力研究  

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

作　　者：喻海良[1] 刘相华[1] 李长生[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）》2006年第11期1228-1231,共4页Journal of Northeastern University(Natural Science)

基　　金：国家重点基础研究发展规划项目(G2000067208-4);国家自然科学基金资助项目(50534020).

摘　　要：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·FEM simulation was done for the deformation behavior of a “dog-None” shaped workpiece during flat-spread rolling. The effects of the apical position and maximum height of the workpiece and pass reductions on its comer tensile stress in rolling process were analyzed, The results showed that the change in apical position affects greatly the comer tensile stress which can be increased by 66.7%, and the changes in maximum height and pass reduction affect the comer tensile stress rather smaller. The comer tensile stress increases with the positional distance of the workpieee. The conclusion drawn from the simulation is of significance to improving productivity especially the rate of finished products.

关 键 词：狗骨 平轧 有限元 角部拉应力 调宽轧制 

分 类 号：TG355[金属学及工艺—金属压力加工]