张力减径无缝钢管尺寸精度的研究  

Investigation of Size Accuracy of Stretch Reduced Seamless Tube

作　　者：于辉[1] 杜凤山[1] 臧新良[1] 汪飞雪[1] 刘玉文[2] 

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]宝山钢铁股份有限公司钢管分公司,上海200941

出　　处：《钢铁》2008年第6期42-46,共5页Iron and Steel

基　　金：国家自然科学基金资助项目(50344036)

摘　　要：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 deformation characteristics of stretch reducing rolling process, a 3D elastic-plastic finite element analysis model was established to simulate the distribution of wall thickness and outer diameter of seamless tube with numerical simulation. The transverse distribution of tube wall thickness was investigated to analyse the formation of bore polygon. The distribution of longitudinal wall thickness at head and tail was investigated to determine the rational length of end crop. The calculated results were comparatively close to industrial experimental ones. The study provides at off-line means for improving product quality and minimizing crop loss.

关 键 词：钢管 张力减径 壁厚分布 内多边形 切头切尾 

分 类 号：TG306[金属学及工艺—金属压力加工]