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环件轧制是一种先进的近终成形技术,具有异步轧制、平辊轧制、多道次连续轧制、局部连续变形的特点。基于ABAQUS/Explicit平台建立了AZ31镁合金环件径轴向热轧的三维弹塑性热力耦合有限元模型,分析了轧辊温度对成形环件的应变和温度分布不均匀性以及轧制力能参数的影响规律。结果表明:随着轧辊温度的增加,成形环件的等效应变和温度分布越来越均匀;同时轧制力、轧制力矩变化不明显。
Ring rolling is an advanced near-end forming technology, with asynchronous rolling, flat roll, multi-pass continuous rolling, the partial continuous deformation characteristics. Based on the ABAQUS / Explicit platform, a three-dimensional elasto-plastic coupling finite element model of axial hot rolling of AZ31 magnesium alloy rings was established. The strain and temperature distribution inhomogeneities of the forming ring and the rolling force energy parameters Affect the law. The results show that the equivalent strain and temperature distribution of the ring are more and more uniform with the increase of the temperature of the roll. At the same time, the variation of the rolling force and the rolling torque is not obvious.