基于PQF限动芯棒连轧孔型及工艺特点，建立PQF连轧全过程三维非线性有限元模型，预报了荒管的尺寸形状和力学性能参数，对比某厂现场数据，两者吻合良好。分析PQF连轧过程中张力的形成机制，研究张力对金属流变规律、中性曲线分布、钢管截面尺寸、设备力能参数等的影响规律，为PQF连轧工艺设定优化和产品质量控制提供理论指导。
According to the geometric pass and technological characteristics in PQF retained mandrel rolling process, a three-di-mensional nonlinear finite element model was established for the whole rolling process. The size of pierced billet and the param-eters of force and energy were predicted in this model. The simulation results were in good agreement with the experimental re-sults in a certain factory. The formation mechanism of the tension in PQF continuous rolling process was analyzed, and influ-ence rules of the tension on the metal rheological law, the neutral curve distribution, the steel pipe section size, the force and en-ergy parameters were researched, which provides a theoretical guidance for optimizing the PQF rolling process parameters and controlling product quality.
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