半浮芯棒连轧管工艺过程的有限元模拟分析

连轧管工艺是无缝钢管生产的重要工艺之一,而半浮芯棒连轧管工艺代表现代无缝钢管生产的先进技术,也是当前的研究热点。为此,采用ANSYS/LS-DYNA软件对φ109mm×7mm规格6机架半浮芯棒连轧管工艺过程进行三维热固耦合有限元模拟分析。结果表明：钢管在第4号、第5号机位横截面总等效应力最大,在前3个机位发生的总等效形...

FINITE ELEMENT SIMULATION AND ANALYSIS OF TECHNOLOGY OF SEMI-FLOATING MANDREL PIPE MILL

The mandrel pipe mill is one of the important technologies in a seamless pipe manufacture.The technology of a semi-floating mandrel pipe mill represents advanced technique of seamless pipe manufactures,and it is a hot spot of research at present.The finite element simulations are made on technology of 6-stand semi-floating mandrel pipe mills of ?109mm×7mm by ANSYS/LS-DYNA at 3D thermosetting coupling.Based on the analysis,the conclusions are reached that the max von Mises stresses on the pipe transverse plane occur at 4th and 5th stands;the max effective strains on the pipe transverse plane occur at the first three stands;the rolling forces at 3rd-5th stands are larger than other stands';the rebound is occurred at pipe outside in the process of the diametric decrease;the temperatures distribute asymmetrically on one pipe transverse plane.This study provides a technical foundation to the improvement of technologies of mandrel pipe mills.