中厚板矫直工艺模型初探

Study on straightening process model of medium and heavy plate

本文以热轧横切机组中的11辊矫直机为研究对象,将矫直过程中钢板假设为简支梁模型,将零弯矩点看作虚拟支点,并取该支点所处断面上的剪力为支点反力,建立更加准确合理的矫直机模型,推导出矫直过程中的压弯量。并进一步根据横切线组中的11辊辊式矫直机的工艺参数,利用ANSYS/LS-DYNA软件建立钢板矫直机过程的三维动态有限元模型,通过对整个矫直机系统的动态有限元分析,残余应力的分布情况,同时分析比较仿真结果和现场测试数据,修正工艺参数,使残余应力得到减小或分布均匀化,最终得到准确合理的矫直机工艺参数。

Taking the I 1-roll straightener in cut-to-length line for hot rolled steel as the research object, the steel plate has been supposed as simple beam model, and the zero moment point has been supposed as vir- tual fulcrum. The shear force of the fulcrum section has been taken as fulcrum counter force, the more ac- curate and reasonable model for straightener has been established. The intermesh in the straightening process has been deduced. According to the technical parameters of l 1-roll straightener in cut-to-length line for hot rolled steel, the 3D finite element model has been established to the straightener by use of ANSYS/LS-DY- NA software. The simulation result and site testing data have been analyzed and compared, and the technical parameters have been revised. Meanwhile by dynamic finite element analysis of the whole straightener and the distribution situation of the residual stress, the residual stress has been reduced or distributed Finally, the accurate and reasonable technical parameters of the straightener have been obtained. system evenly.