无缝钢管张力减径过程内六方产生的模拟分析

钢铁, 2008, 43(3): 53-0.

无缝钢管张力减径过程内六方产生的模拟分析

1.1. College of Mechanical Engineering of Yanshan University, Qinhuangdao 066004, Hebei, China； 2. Tube Subcompany of Baoshan Iron and Steel Co., Shanghai 200941, China

关键词：无缝钢管;有限元;张力减径;横向壁厚;六方孔径

Simulation Analysis on Formation of Bore Hexagonal Shape of Seamless Tube in Stretch Reducing Rolling Process

YU Hui , ZANG Xinliang , DU Fengshan , WANG Feixue , PAN Feng , ZHOU Xiaolan

Keywords： seamless tube;finite element analysis;stretch reducing;transverse wall thickness;hexagonal bore

根据无缝钢管张减过程的变形特点，利用MSC.Marc软件建立了三维热力耦合有限元分析模型，对18机架张力减径试轧产品进行数值模拟，模拟结果与实测数值的对比表明建立的分析模型实用可靠,精度较高。通过研究各机架出口断面不同点的壁厚变化，得出减径后钢管横向壁厚分布不均，探讨了内六方缺陷产生的原因。该模型的建立为分析产品缺陷、指导工艺设计提供了依据。

Based on the deformation characteristics of seamless tube during stretch reduction,a 3D thermomechanical coupled finite element model was established to simulate the deformation process of tube on 18stand stretch reducing mill. The comparison of finite element analysis results with measured ones indicated that the simulation model is practical and reliable. It was found that the transverse wall thickness distribution is nonuniform and that is the cause of hexagonal bore formation. The model can be used to analyse product flaws and instruct technological design.

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