根据张力减径过程的变形特点,利用数值仿真技术建立了三维弹塑性有限元分析模型,研究无缝钢管张力减径产品的壁厚及外径分布。通过研究成品钢管中部断面上的横向壁厚分布,分析了内部多边形程度;通过研究头尾两端的纵向壁厚分布,分析了头尾增厚段切除长度,并与试验结果进行对比验证,为提高产品质量、减小切头损失提供了离线研究手段。 According to the deformation characteristics of tension reducing process, a three-dimensional elasto-plastic finite element model was established by using numerical simulation technique to study the wall thickness and outer diameter distribution of the product. Through analyzing the distribution of transverse wall thickness in the middle section of the finished steel pipe, the degree of internal polygon is analyzed. By analyzing the distribution of longitudinal wall thickness at both ends of the head and tail, the length of head and tail thickened section is analyzed and compared with the test results, Product quality, reduce the crop loss provides an offline research tools.