摘要
基于设计的轧辊孔型,使用三维有限元分析软件Simufact,对28Ni Cr Mo V8.5钢管典型规格准16 mm×1.5mm皮尔格冷轧过程进行了数值模拟。研究了不同摩擦系数及孔型开口系数对冷轧管横向壁厚分布及精度的影响规律。结果表明:钢管的横向壁厚分布是不均匀的,在孔型开口及孔顶处出现最小值,在孔型侧壁角45°两侧出现最大值。随着摩擦系数和孔型开口系数增大,不均匀的横向壁厚变得更加严重。当轧辊与轧件的摩擦系数由0.080增大到0.095时,冷轧管的横向壁厚精度由5.51%变到6.98%;当孔型开口系数由0.051增大到0.061时,横向壁厚精度由5.51%变到8.11%。
Based on design of roll groove, Pelger cold rolling process of 28 Ni Cr Mo V8.5 steel tube with typical specifications of Ф16 mm ×1.5 mm was numerically simulated by using 3D finite element analysis softw are simufact. The influences of different friction coefficients and groove opening coefficients on distribution and accuracy of transverse wall thickness were studied. The results show that the distribution of transverse wall thickness of steel tube is uneven, which has a bigger value at both sides of 45° along groove width, and a smaller value at the top and the bottom of groove respectively. The uneven transverse wall thickness becomes more obvious as coefficients of friction and groove opening increase. The transverse wall thickness accuracy changes from 5.51% to 6.98% when friction coefficient increases from 0.080 to 0.095. The transverse wall thickness accuracy changes from 5.51% to 8.11% when groove opening coefficients increase from 0.051 to 0.061.
出处
《热加工工艺》
CSCD
北大核心
2016年第5期163-166,170,共5页
Hot Working Technology
基金
江苏省重大创新项目(BA2008084)
关键词
皮尔格冷轧管
横向壁厚精度
摩擦系数
孔型开口系数
Pilger cold rolled tube
transverse wall thickness accuracy
friction coefficient
groove opening coefficient
