椭圆孔型张减过程模拟及横向壁厚分布预测  

Stretch reduction Process Simulation of Oval Pass and the Evaluation of Cross sectional Wall Thickness

作　　者：潘克云[1] 王先进[2] 秦国庆[2] 

机构地区：[1]上海宝钢集团公司 [2]北京科技大学

出　　处：《宝钢技术》2000年第2期44-48,共5页Baosteel Technology

摘　　要：通过对宝钢钢管厂 1 52 5BO椭圆孔型系统主变形机架生产不同壁厚管子的轧制过程进行三维弹塑性有限元模拟 ,得出经减径后管子沿圆周方向的壁厚分布不均 ,产生内多边形的缺陷 ,随着总减径率和壁厚的增加 ,引起内多边形的程度增大。根据模拟结果对 1 52The method of tri dimentional elastic plasticity finite element is used to simulate the rolling process of 152.5BO pass system applied in main strech reducing stands, which makes clear that the distribution of wall thickness along the tube section stretch reduced is uneven and it results in polyg onization.The degreeof polygonization will be aggravated with the increase of total diameter reduction and wall thickness.The simulation result is adopted to evaluate the distribution of cross sectional wall thickn ess of the different size tubes produced by the multi stand rolling of 152.5BO pass system.

关 键 词：张力减径 有限元 壁厚预测 椭圆孔型 无缝钢管 

分 类 号：TG335.71[金属学及工艺—金属压力加工]