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在Deform-3D平台下建立环件径-轴向轧制的三维有限元模型,结合理论研究和实际试验对42CrMo环件的轧制成形过程进行数值模拟与分析,并研究其轧制过程中的变形规律及成形情况,为轧制生产合格环件提供合理工艺。结果显示:42CrMo环件轧制成形的模拟结果和理论研究吻合,大变形区为环件外圈,内径扩大速度大于外径;等效应变值外圈大于内圈,中心最小,最大等效应变处于轴向端面的棱角处;环件温度外圈高于内圈,中心最高,端面棱角处最低;材料损伤最严重的部位为轴向端面,最大损伤值为0.645。对模拟结果进行理论验证和实际试验验证,环件尺寸的模拟值和理论值误差在5%以内,试验结果和模拟结果接近。
Based on the Deform-3D platform, a three-dimensional ring-and-axle rolling finite element model was established. The numerical simulation and analysis of the rolling process of 42CrMo ring were carried out with theoretical research and practical experiments. Deformation and forming the law, for the production of qualified rolling ring to provide a reasonable process. The results show that the simulation results of 42CrMo ring are in good agreement with the theoretical research. The large deformation zone is the outer ring of the ring and the expansion speed of the inner diameter is larger than the outer diameter. The equivalent strain value is larger than the inner ring in the outer ring and the center is the smallest and the maximum equivalent strain The edge of the ring is higher than the inner ring, the center is the highest, the lowest point of the edge; the most damaged part of the material is the axial end face, the maximum damage value is 0.645. The simulation results are verified by theoretical and practical tests. The error of simulation value and theoretical value of the ring size is within 5%, and the test results are close to the simulation results.