针对无缝钢管张力减径产品的管形问题,将张力减径过程分为机架内的轧制变形和机架间的网格再生过程,在有限元软件Marc平台上,建立了管形预测的分组有限元模型,进行三维热力耦合有限元模拟研究.结合某厂产品的轧制工艺,进行了管形模拟分析,并与实测数据进行对比,验证模型的可靠性.该模型为提高产品质量、指导工艺设计提供了研究手段.
Aimed to the tube shape for multi-stand stretch reducing rolling unit of seamless tube, the stretch reduc-ing process was divided into roiling deformation in the stand and remeshing among the stands. The group finite ele-ment model of tube shape prediction has been established to simulate this process by means of 3-D thermo-mechani-cal coupled finite element method on the platform of FEM software Marc. The simulated tube shape was analyzed according to the product rolling technical of a company. The reliability of the model was verified by comparing the actual measured data with the simulated results. The model provides the means for improving product quality and in-structing technological design.
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